History of Services 51 - 100

Service 51 (Current)

Operator	Route	Year	Date	Service changes
Associated Bus Services	Jln Eunos ↔ Labrador	1971	11 April	Introduced between Jln Eunos Ter and Labrador Ter under 1971 Bus Reorganisation.
			28 September	Amended to ply the extended Ganges Ave towards Jln Eunos Ter.
		1972	11 June	Amended to ply Upp Cross St with the partial conversion of Havelock Rd to one-way traffic, skipping Upp Hokien St.
(Current) Known as prior to 1 November 2001		1973	1 July	Operations transferred to Singapore Bus Services.
		1975	2 March	Amended to ply Sims Ave towards Jln Eunos Ter with the conversion of Geylang Rd to one-way traffic.
		1979	11 November	Amended to ply Ganges Ave towards Alexandra Rd Ter with the realignment of Delta Circus.
	Hougang South ↔ Labrador	1987	22 March	Integrated with Service 54 and extended to Hougang Int.
			27 September	Amended to ply the extended Eu Tong Sen St towards Hougang Int to facilitate the first stage of road expansion along New Bridge Rd.
			1 November	Amended to ply Eu Tong Sen St towards Hougang Int to facilitate the second stage of road expansion along New Bridge Rd.
			13 December	Serves new staggered bus stop opposite Peninsula Plaza along Nth Bridge Rd, skipping the bus stop outside St Andrew's Cath.
	Hougang South ↔ Jurong East	1988	18 December	Integrated with Service 192 and extended to Jurong East Int.
		1990	22 July	Serves additional bus stop outside Ellenborough Mkt along Eu Tong Sen St.
		1996	TBC	Serves additional bus stop outside Kallang Stn along Sims Ave.
			TBC	First bus from Jurong East Int brought forward to 0530 hrs on weekdays and Saturdays.
		1997	TBC	Serves the bus stop outside Bugis Stn along Victoria St, skipping the bus stop opposite Bugis Junction.
		1999	20 September	Serves new pair of bus stops outside and opposite West Bay Resort Condo along West Coast Rd.
	51Hougang South ↔ Jurong East 51AJurong East → Pandan Gardens	2002	12 May	Amended to ply Pandan Gdns.
				51AIntroduced from Jurong East Int to Pandan Gdns (Blk 407), operating after the last bus of Service 51 daily.
	51Hougang Ctrl ↔ Jurong East 51AJurong East → Pandan Gardens	2004	15 February	Extended to Hougang Ctrl Int with the closure of Hougang Sth Int.
		2007	22 May	Designated wheelchair-accessible bus service (WAB).
		2009	5 July	Amended to ply Boon Lay Way and Jurong East Ctrl with the closure of Jurong East St 12 to facilitate the Jurong East Modification Project (JEMP).
		2011	17 December	Amended to Jurong East Temp Int.
		2014	27 April	Serves new bus stop outside Queens Condo along Commonwealth Ave.
		2020	6 December	Amended to relocated Jurong East Temp Int and serve new bus stop before Jurong East Stn along Jurong Gateway Rd.

Service 52

1st Generation (1971 - 1974)

Operator	Route	Year	Date	Service changes
Associated Bus Services	Jln Eunos ↔ Tg Pagar Rd	1971	3 July	Introduced between Jln Eunos Ter and Tg Pagar Rd Ter.
		1973	1 July	Operations transferred to Singapore Bus Services.
		1974	3 February	Discontinued under 1974 Bus Rationalisation.

2nd Generation (Current)

Operator	Route	Year	Date	Service changes
(Current)	Bishan ↔ Jurong East	2005	23 October	Introduced between Bishan Int and Jurong East Int, operating between 0545 hrs and 2345 hrs from Bishan Int and Jurong East Int daily.
		2009	3 December	Designated wheelchair-accessible bus service (WAB).
		2011	17 December	Amended to Jurong East Temp Int.
		2012	9 December	Amended to ply Upp Bt Timah Rd and Bt Timah Lk with the partial closure of Jln Jurong Kechil to facilitate the construction of DT5Beauty World station on the Downtown Line.
		2014	26 January	Amended to ply the reinstated Jln Jurong Kechil, skipping Upp Bt Timah Rd and Bt Timah Lk.
		2018	28 October	Amended to ply southbound Lornie Highway towards Jurong East Temp Int.
		2019	23 June	Amended to ply northbound Lornie Highway towards Bishan Int.
		2020	6 December	Amended to relocated Jurong East Temp Int and serve new bus stop before Jurong East Stn along Jurong Gateway Rd.

Service 53

1st Generation (1974 - 1983)

Operator	Route	Year	Date	Service changes
	Kaki Bt ↔ Alexandra Rd	1974	3 February	Re-numbered from Service 50A as a service between Kaki Bt Ter and Alexandra Rd (Alexandra Hosp) Ter.
		1975	2 March	Amended to ply Sims Ave towards Kaki Bt Ter with the conversion of Geylang Rd to one-way traffic.
		1978	15 January	Amended to ply Jln Sultan, skipping Sumbawa Rd.
		1983	20 February	Discontinued.

2nd Generation (Current)

Operator	Route	Year	Date	Service changes
(Current) Known as prior to 1 November 2001	Bishan ↺ Hougang Ave 3	1994	10 July	Introduced between Bishan Int and Hougang Ave 3 (Loop).
	Bishan ↺ Changi Airport	1995	23 April	Extended to loop at Changi Airport.
	Bishan ↔ Changi Airport	1996	TBC	Converted to bi-directional service between Bishan Int and Changi Airport PTB 1.
			3 September	Amended to ply Pasir Ris Dr 12 and Pasir Ris Dr 1, skipping Elias Rd.
			TBC	First bus from Bishan Int brought forward to 0530 hrs on Sundays and Public Holidays.
		1997	TBC	Serves additional bus stop opposite Fish Farm Rd 2 along Tampines Rd.
		1998	TBC	Serves additional bus stop after Fish Farm Rd 2 along Tampines Rd.
		2000	TBC	Serves new pair of bus stops outside and opposite SATS Flight Kitchen along Airport Blvd.
		2003	21 June	Amended to ply Serangoon Ctrl and Upp Serangoon Rd under North East Line Rationalisation Phase 1.
			TBC	Serves new bus stop outside Serangoon Stn along Serangoon Ctrl.
		2007	23 June	Amended to ply Tampines Svc Rd.
			11 November	Amended to serve Changi Airport PTB 3.
		2009	26 October	Designated wheelchair-accessible bus service (WAB).
	Bishan ↺ Changi Airport	2012	9 January	Converted to loop service between Bishan Int and Changi Airport PTB 2.
	53Bishan ↺ Changi Airport 53AHougang Ave 1 → Serangoon Ctrl 53BSerangoon Ctrl → Hougang Ave 1		27 February	53AIntroduced from Hougang Ave 1 (Opp Blk 232) to Serangoon Ctrl (Blk 261) during morning peak hours on weekdays. Wheelchair-accessible bus service (WAB) at launch.
				53BIntroduced from Serangoon Ctrl (Blk 206) to Hougang Ave 1 (Blk 232) during evening peak hours on weekdays. Wheelchair-accessible bus service (WAB) at launch.
			29 April	Serves new bus stop outside Blk 612 along Pasir Ris Dr 1.
	Bishan ↺ Changi Airport	2015	16 August	53ADiscontinued with the introduction of Service 53M.
				53BDiscontinued with the introduction of Service 53M.
	53Bishan ↺ Changi Airport 53APasir Ris Dr 1 → Changi Airport	2016	1 September	53AIntroduced from Pasir Ris Dr 1 (Blk 738) to Changi Airport PTB 2 during morning peak hours on weekdays. Wheelchair-accessible bus service (WAB) at launch.
		2022	30 October	Temporarily amended to ply Pasir Ris St 11 and Pasir Ris St 12 with the partial closure of Pasir Ris Dr 1 to facilitate the construction of CR4Pasir Ris East station on the Cross Island Line.
		2023	8 October	Temporarily amended to ply Pasir Ris Ctrl and Pasir Ris Dr 8 with the partial closure of Pasir Ris Dr 1 to facilitate the construction of CR5CP1EW1Pasir Ris station on the Cross Island Line.

Service 53M (Current)

Operator	Route	Year	Date	Service changes
(Current)	Hougang Ave 1 ↺ Serangoon Ctrl	2015	16 August	Introduced between Hougang Ave 1 (Opp Blk 232) and Serangoon Ctrl (Loop) under the LTA's Bus Service Enhancement Programme (BSEP). Wheelchair-accessible bus service (WAB) at launch.
		2016	24 January	Serves additional bus stop outside Blk 209 along Boundary Rd.

Service 54

1st Generation (1985 - 1987)

Operator	Route	Year	Date	Service changes
	Hougang ↺ Jln Eunos	1985	29 December	Introduced between Hougang Int and Jln Eunos (Loop).
		1987	22 March	Integrated with Service 51 and discontinued.

2nd Generation (Current)

Operator	Route	Year	Date	Service changes
(Current) Known as prior to 1 November 2001	Bishan ↔ New Bridge Rd	1993	5 December	Introduced between Bishan Int and New Bridge Rd Ter with the integration of Services 104 and 134 under TransitLink Network Integration Exercise Phase 14.
		1994	TBC	Last bus from New Bridge Rd Ter revised to 2330 hrs daily.
		1997	TBC	First bus from Bishan Int brought forward to 0545 hrs on weekdays.
			7 December	Amended to ply Upp Pickering St, Sth Bridge Rd and Kreta Ayer Rd with the partial closure of New Bridge Rd to facilitate the construction of NE4DT19Chinatown station on the North East Line.
		2000	20 February	Serves additional bus stop opposite Blk 333 along Kreta Ayer Rd.
			TBC	First bus from New Bridge Rd Ter extended to 2400 hrs on Saturdays.
	54Bishan ↔ New Bridge Rd 54ABishan St 22 → Bishan Rd	2001	TBC	54AIntroduced from Bishan St 22 (Blk 245) to Bishan Rd (Bishan Stn) during morning peak hours on weekdays.
		2002	20 April	Amended to ply the reinstated New Bridge Rd, skipping Upp Pickering St, Sth Bridge Rd and Kreta Ayer Rd.
	Bishan ↔ New Bridge Rd	2004	TBC	54ADiscontinued.
		2006	5 November	Amended to ply Bishan St 13 and Bishan St 11.
		2009	3 December	Designated wheelchair-accessible bus service (WAB).
	Bishan ↔ Kampong Bahru	2018	10 March	Extended to Kg Bahru Ter with the closure of New Bridge Rd Ter.
				First bus from Kg Bahru Ter brought forward to 0610 hrs daily.
		2020	8 November	Skips the bus stop opposite SLF Cplx along Thomson Rd to facilitate the construction of the North-South Corridor (NSC).
		2023	8 January	Skips the bus stop outside Newton Stn Exit B along Scotts Rd temporarily to facilitate upgrading works.
			27 August	Serves reinstated bus stop outside Newton Stn Exit B along Scotts Rd.
		2025	9 March	Serves additional bus stop outside Outram Pk Stn Exit 4 along New Bridge Rd.

Service 55

1st Generation (1980 - 1988)

Operator	Route	Year	Date	Service changes
	South Canal ↺ Alexandra Rd	1980	11 February	Introduced between Sth Canal Ter and Alexandra Rd (Loop).
	South Canal ↺ Mei Chin Rd		9 March	Amended to loop at Mei Chin Rd.
			23 November	Amended to ply Leng Kee Rd and Tiong Bahru Rd.
		1984	30 December	Amended to ply Alexandra Rd, skipping Leng Kee Rd.
		1988	18 December	Integrated with Service 195 and discontinued.

2nd Generation (Current)

Operator	Route	Year	Date	Service changes
(Current) Known as prior to 1 November 2001	Ang Mo Kio ↔ Marine Parade	1992	29 November	Introduced between Ang Mo Kio Int and Marine Parade Ter under TransitLink Network Integration Exercise Phase 10.
	Bishan ↔ Marine Parade	1994	16 January	Extended to Bishan Int.
	55Bishan ↺ Siglap Rd 55ABishan → Siglap Rd	2001	16 September	Amended to loop at Siglap Rd from Bishan Int with the closure of Marine Parade Ter.
				55AIntroduced from Bishan Int to Siglap Rd (Opp Mandarin Gdns) as terminating trips after the last bus of Service 55 daily.
		2003	TBC	Serves new bus stop outside Victoria Sch along Marine Parade Rd.
	55Bishan ↺ Siglap Rd 55ABishan → Marine Parade Rd	2005	25 April	55AExtended to terminate at Marine Parade Rd (Victoria Sch).
		2011	7 March	Designated wheelchair-accessible bus service (WAB).
	55Bishan ↺ Siglap Rd 55ABishan → Marine Parade Rd 55BBishan → Ang Mo Kio Ave 10	2013	25 November	55BIntroduced from Bishan Int to Ang Mo Kio Ave 10 (Blk 443) during evening peak hours on weekdays. Wheelchair-accessible bus service (WAB) at launch.
	55Bishan ↔ Upp East Coast 55BBishan → Ang Mo Kio Ave 10	2017	9 April	55Extended to Upp East Coast Ter.
				55ADiscontinued with the extension of Service 55 to Upp East Coast Ter.

Service 56 (Current)

Operator	Route	Year	Date	Service changes
(Current) Known as prior to 1 November 2001	Bishan St 11 ↺ Toa Payoh	1985	22 December	Introduced between Bishan St 11 and Toa Payoh Int (Loop).
	Bishan ↺ Toa Payoh	1986	28 December	Amended to Bishan Ter.
		1987	16 March	First bus from Bishan Ter brought forward to 0545 hrs daily.
		1989	30 April	Amended to Bishan Int.
	Bishan ↔ Marina Ctr	1990	2 September	Integrated with Services 58 and 150 and extended to Marina Ctr Ter.
		2000	TBC	Last bus from Marina Ctr Ter extended to 0015 hrs on Saturdays.
		2001	18 February	Serves new staggered bus stop outside Novena Stn along Thomson Rd, skipping the bus stop outside Novena Ch.
		2005	TBC	Skips removed bus stop outside Muhajirin Mque along Braddell Rd.
		2012	30 September	Designated wheelchair-accessible bus service (WAB).
		2021	27 February	Amended to the relocated Marina Ctr Ter.

Service 57

1st Generation (1983 - 1987)

Operator	Route	Year	Date	Service changes
	Buona Vista ↔ Changi Airport	1983	25 June	Introduced between Buona Vista Ter and Changi Airport as a peak hour service on weekdays & Saturdays under Changi Airport Bus Plan 1983, replacing former SSB Service 757.
		1987	6 April	Skips removed bus stop before College Rd along Outram Rd.
			19 April	Discontinued.

2nd Generation (1988 - 1992)

Operator	Route	Year	Date	Service changes
	Bishan ↺ Sin Ming Dr	1988	22 August	Introduced between Bishan Ter and Sin Ming Dr (Loop), replacing Service 353.
			20 November	Amended to ply Sin Ming Rd, Sin Ming Dr, Sin Ming Ave and Upp Thomson Rd in both directions.
		1989	30 April	Amended to Bishan Int.
		1990	21 February	Skips removed bus stop opposite Jasmine Rd along Upp Thomson Rd.
		1992	3 May	Discontinued under TransitLink Network Integration Exercise Phase 7 with the introduction of Townlink Service 410G/410W.

3rd Generation (Current)

Operator	Route	Year	Date	Service changes
(Current)	Bishan ↔ Bukit Merah	2005	31 July	Introduced between Bishan Int and Bt Merah Int, operating between 0600 hrs and 2330 hrs from Bishan Int daily, and between 0545 hrs and 2400 hrs from Bt Merah Int daily.
			2 October	Serves new bus stop outside New 7th Storey Hotel along Rochor Rd.
		2006	29 October	Serves new bus stop outside VivoCity along Telok Blangah Rd.
		2007	21 January	Amended to ply Thomson Rd, Kg Java Rd and Keng Lee Rd, skipping Whitley Rd/PIE and Dunearn Rd.
			24 June	Serves new bus stop outside Blk 114 along Depot Rd.
		2008	7 December	Skips removed bus stop opposite Temenggong D Mque along Telok Blangah Rd.
		2009	3 December	Designated wheelchair-accessible bus service (WAB).

Service 58

1st Generation (1987 - 1990)

Operator	Route	Year	Date	Service changes
	Bishan ↺ Marina Ctr	1987	18 January	Introduced between Bishan Ter and Marina Ctr (Loop).
		1989	30 April	Amended to Bishan Int.
		1990	2 September	Integrated with Service 56 and discontinued.

2nd Generation (Current)

Operator	Route	Year	Date	Service changes
(Current)	Bishan ↔ Pasir Ris	2005	31 July	Introduced between Bishan Int and Pasir Ris Int, operating between 0530 hrs and 2400 hrs from Bishan Int and Pasir Ris Int daily.
		2011	28 August	Amended to ply Jln Tenaga, Bedok Reservoir Rd and Jln Damai with the partial closure of Kaki Bt Ave 1 to facilitate the construction of DT28Kaki Bukit station on the Downtown Line.
		2012	26 March	Designated wheelchair-accessible bus service (WAB).
		2013	22 September	Serves new bus stop outside Wisma AUPE along Upp Paya Lebar Rd.
		2016	24 April	Amended to ply the reinstated Kaki Bt Ave 1, skipping Jln Tenaga, Bedok Reservoir Rd and Jln Damai.
	58Bishan ↔ Pasir Ris 58AUpp Serangoon Rd → Tampines Ave 10 58BPasir Ris → Upp Paya Lebar Rd	2017	10 April	58AIntroduced from Upp Serangoon Rd (Serangoon Stn Exit H) to Tampines Ave 10 (Bef TPE) during peak hours on weekdays. Wheelchair-accessible bus service (WAB) at launch.
				58BIntroduced from Pasir Ris Int to Upp Paya Lebar Rd (Aft Tai Seng Stn) during peak hours on weekdays. Wheelchair-accessible bus service (WAB) at launch.
			28 May	Serves 2 new pairs of bus stops after Tampines Ave 5, before Tampines Fire Stn, outside The Santorini and after Tampines Ave 1 along Tampines Ave 10.
		2022	27 November	Serves new pair of bus stops outside and opposite HomeTeamNS Bedok along Bedok Nth Rd.

Service 59

1st Generation (1988 - 1999)

Operator	Route	Year	Date	Service changes
	Bishan ↔ Jln Kayu	1988	10 July	Introduced between Bishan Ter and Jln Kayu Ter.
		1989	30 April	Amended to Bishan Int.
	Ang Mo Kio ↺ Jln Kayu	1992	3 May	Shortened to Ang Mo Kio Int and amended to loop at Jln Kayu under TransitLink Network Integration Exercise Phase 7.
		1995	17 December	Operations transferred to TIBS. Amended to start from Jln Kayu Ter and loop at Ang Mo Kio Int.
		1998	TBC	Skips a pair of temporarily closed bus stops before and after Seletar West Farmway 1 along Jln Kayu.
		1999	21 February	Extended to Sengkang Ter and re-numbered Service 866.

2nd Generation (Current)

Operator	Route	Year	Date	Service changes
(Current)	Bishan ↔ Changi Village	2005	23 October	Introduced between Bishan Int and Changi Village Ter, operating between 0600 hrs and 2330 hrs from Bishan Int and Changi Village Ter daily.
		2006	TBC	First bus from Bishan Int brought forward to 0545 hrs on weekdays.
		2010	28 June	Designated wheelchair-accessible bus service (WAB).
		2011	28 August	Amended to ply Jln Tenaga, Bedok Reservoir Rd and Jln Damai with the partial closure of Kaki Bt Ave 1 to facilitate the construction of DT28Kaki Bukit station on the Downtown Line.
		2016	24 April	Amended to ply the reinstated Kaki Bt Ave 1, skipping Jln Tenaga, Bedok Reservoir Rd and Jln Damai.
		2017	21 October	Serves new pair of bus stops outside Tampines East Stn along Tampines Ave 2.
		2023	26 February	Temporarily amended to ply the bus-only corridor along Loyang Ave and Loyang Way with the partial closure of Loyang Ave to facilitate the construction of Loyang Viaduct and CR3Loyang station on the Cross Island Line, skipping 3 pairs of bus stops along Loyang Ave.

Service 60

1st Generation (April - May 1971)

Operator	Route	Year	Date	Service changes
Singapore Traction Company	MacPherson ↔ Prince Edward	1971	11 April	Introduced between MacPherson Ter and Prince Edward Ter under 1971 Bus Reorganisation.
			9 May	Integrated with Service 60A and renumbered Service 60/60A.

2nd Generation (1976 - 1991)

Operator	Route	Year	Date	Service changes
	MacPherson ↺ Shenton Way	1976	16 August	Introduced between MacPherson Ter and Shenton Way (Loop) as a semi-express service, operating on weekdays and Saturdays only.
		1979	11 February	Amended to ply the extended Shenton Way, Keppel Rd and Anson Rd, skipping Parsi Rd.
		1981	11 October	Serves new staggered bus stop outside Tunas Bldg along Anson Rd, skipping the bus stop outside Intl Plaza.
	Prince Edward ↺ Circuit Rd	1985	29 April	Amended to ply Geylang East Ctrl and re-routed to start from Prince Edward Ter and loop at Circuit Rd, skipping Merpati Rd/Mattar Rd.
		1987	5 January	Skips the bus stop outside Clifford Ctr along Collyer Quay.
	Shenton Way ↺ Circuit Rd		28 June	Amended to Shenton Way Ter.
		1991	26 May	Discontinued under TransitLink Network Integration Exercise Phase 5.

3rd Generation (Current)

Operator	Route	Year	Date	Service changes
(Current)	60Eunos ↺ Bedok 60AEunos ↺ Bedok → Bedok Reservoir Rd	2002	17 November	60Introduced between Eunos Int and Bedok Int (Loop) with the integration of Services 226 and 385.
				60AIntroduced from Eunos Int to Bedok Reservoir Rd (Blk 608) via Bedok Int during evening peak hours on weekdays.
	60Eunos ↺ Bedok 60AEunos → Bedok Reservoir Rd	2004	7 November	Amended to ply the branch road of Bedok Reservoir Rd towards Bedok Int.
				60AShortened to terminate at Bedok Reservoir Rd (Blk 608) without looping at Bedok Int.
		2011	7 March	Designated wheelchair-accessible bus service (WAB).
			19 November	Amended to loop at Bedok Temp Int.
		2013	TBC	60Last bus extended to 0030 hrs daily.
		2014	30 November	Amended to loop at Bedok Integrated Transport Hub.
		2017	21 October	Serves new bus stop outside Bedok Nth Stn along Bedok Nth Rd.
		2019	5 October	60Last bus extended to 0035 hrs daily.
	60Eunos ↺ Bedok 60AEunos → Bedok Reservoir Rd 60TEunos → Bedok	2021	11 April	60TIntroduced from Eunos Int to Bedok Int, operating after the last bus of Service 60 daily. Wheelchair-accessible bus service (WAB) at launch.

Service 60A (April - May 1971)

Operator	Route	Year	Date	Service changes
Singapore Traction Company	MacPherson ↺ Stamford Rd	1971	11 April	Introduced between MacPherson Ter and Stamford Rd (Loop) under 1971 Bus Reorganisation.
			9 May	Integrated with Service 60 and discontinued.

Service 60/60A (1971 - 1974)

Operator	Route	Year	Date	Service changes
Singapore Traction Company	MacPherson ↔ Prince Edward	1971	9 May	Re-numbered from Service 60 as a service between MacPherson Ter and Prince Edward Ter.
United Bus Company			6 December	Operations transferred to United Bus Company.
		1973	1 July	Operations transferred to Singapore Bus Services.
		1974	3 February	Discontinued under 1974 Bus Rationalisation.

Service 61 (Current)

Operator	Route	Year	Date	Service changes
Singapore Traction Company	MacPherson ↔ Labrador	1971	11 April	Introduced between MacPherson Ter and Labrador Ter under 1971 Bus Reorganisation.
	MacPherson ↔ Ulu Pandan		2 May	Extended to Ulu Pandan Ter.
Associated Bus Services			6 December	Operations transferred to Associated Bus Services.
		1973	1 July	Operations transferred to Singapore Bus Services.
		1975	2 March	Amended to ply Sims Ave towards MacPherson Ter with the conversion of Geylang Rd to one-way traffic.
		1977	29 August	Amended to ply Holland Ave and Holland Rd, skipping Nth Buona Vista Rd.
			21 November	Amended to ply Jln Kolam Ayer, Kallang Bahru and Lavender St, skipping Sims Ave/Geylang Rd.
		1980	13 July	Amended to ply Commonwealth Ave, Margaret Dr and Queensway towards MacPherson Ter with the conversion of Queens Circus to a signalised junction.
		1982	22 May	Amended to ply Aljunied Rd, MacPherson Rd, Bendemeer Rd and Geylang Bahru towards Ulu Pandan Ter, skipping Jln Kolam Ayer and amended to ply Bendemeer Rd, Whampoa North, Serangoon Rd, MacPherson Rd and Aljunied Rd towards MacPherson Ter.
		1985	27 January	Amended to turn right from Commonwealth Dr to Queensway directly towards MacPherson Ter, skipping Margaret Dr.
	MacPherson ↔ Bukit Batok	1987	19 April	Extended to Bt Batok Ter.
			20 April	Serves new staggered bus stop under the PIE Flyover along Jln Anak Bt, skipping the bus stop opposite Bt Timah Plaza.
			27 September	Amended to Bt Batok Int.
				Amended to ply the extended Eu Tong Sen St towards MacPherson Ter to facilitate the first stage of road expansion along New Bridge Rd.
			1 November	Amended to ply Eu Tong Sen St towards MacPherson Ter to facilitate the second stage of road expansion along New Bridge Rd.
		1989	29 January	Serves relocated bus stop opposite Sri Mariamman Tp along Sth Bridge Rd, skipping a removed bus stop opposite Jamae Mque.
				Serves additional bus stop opposite Upp Hokien St along Sth Bridge Rd.
		1990	22 July	Serves additional bus stop outside Ellenborough Mkt along Eu Tong Sen St.
	Eunos ↔ Bukit Batok	1991	26 May	Extended to Eunos Int under TransitLink Network Integration Exercise Phase 5.
		1999	TBC	Serves the bus stop outside Bugis Stn along Victoria St, skipping the bus stop opposite Bugis Junction.
			TBC	Skips a pair of removed bus stops outside and opposite Wishart Rd along Telok Blangah Rd.
(Current) Known as prior to 10 May 2004		2000	3 September	Operations transferred to Trans Island Bus Services.
		2003	TBC	Serves new bus stop outside Goh & Goh Bldg along Jln Jurong Kechil.
			4 May	Amended to ply Geylang Bahru, Bendemeer Rd and Serangoon Rd, skipping Jln Kolam Ayer.
			12 October	Serves bus stop opposite Bt Timah Plaza along Jln Anak Bt with the removal of the bus stop under the PIE Flyover.
		2006	16 April	Serves 2 additional bus stops outside Mujahidin Mque and opposite Blessed Sacrament Ch along Queensway.
			29 October	Serves new bus stop outside VivoCity along Telok Blangah Rd.
		2008	7 December	Skips removed bus stop opposite Temenggong D Mque along Telok Blangah Rd.
		2009	22 November	Serves new pair of bus stops outside and opposite MacPherson Stn along Circuit Lk.
		2011	26 June	Amended to ply Lor Bengkok with the closure of Circuit Lk to facilitate the construction of DT26CC10MacPherson station on the Downtown Line.
				Serves new bus stop outside The Pinnacle @ Duxton along Neil Rd.
			3 December	Designated wheelchair-accessible bus service (WAB).
		2012	9 December	Amended to ply Upp Bt Timah Rd and Bt Timah Lk with the partial closure of Jln Jurong Kechil to facilitate the construction of DT5Beauty World station on the Downtown Line.
		2014	26 January	Amended to ply the reinstated Jln Jurong Kechil, skipping Upp Bt Timah Rd and Bt Timah Lk.
		2016	16 October	Amended to ply the reinstated Circuit Lk, skipping Lor Bengkok.
		2017	12 February	Serves new pair of bus stops before and after Ubi Rd 3 along Ubi Ave 2.
			26 November	Serves bus stop after Hosp Dr along Eu Tong Sen St with the removal of the bus stop before Hosp Dr along Kg Bahru Rd.
		2018	10 March	Amended to ply Commonwealth Ave towards Eunos Int with the partial closure of Tanglin Halt Rd.
				First bus from Bt Batok Int brought forward to 0520 hrs daily.

Service 62 (Current)

Operator	Route	Year	Date	Service changes
Amalgamated Bus Company	MacPherson ↔ Rumah Tinggi	1971	11 April	Introduced between MacPherson Ter and Rumah Tinggi Ter under 1971 Bus Reorganisation.
Known as prior to 1 November 2001		1973	1 July	Operations transferred to Singapore Bus Services.
		1975	2 February	Amended to ply new slip road from Tiong Bahru Rd to Outram Rd with the conversion of Seng Poh Rd to one-way traffic.
			2 March	Amended to ply Sims Ave towards MacPherson Ter with the conversion of Geylang Rd to one-way traffic.
		1981	14 June	Amended to ply Redhill Cl, Redhill Rd and Lengkok Bahru, skipping Alexandra Rd and Leng Kee Rd.
		1987	6 April	Skips removed bus stop before College Rd along Outram Rd.
			27 September	Amended to ply the extended Eu Tong Sen St towards MacPherson Ter to facilitate the first stage of road expansion along New Bridge Rd.
			1 November	Amended to ply Eu Tong Sen St to facilitate the second stage of road expansion along New Bridge Rd.
			13 December	Serves new staggered bus stop opposite Peninsula Plaza along Nth Bridge Rd, skipping the bus stop outside St Andrew's Cath.
		1988	20 March	Amended to ply Upp Cross St and New Bridge Rd, skipping Neil Rd.
	Hougang South ↔ Rumah Tinggi	1989	5 November	Extended to Hougang Int.
		1990	22 July	Serves additional bus stop outside Ellenborough Mkt along Eu Tong Sen St.
		1993	11 April	Amended to ply Jln Sultan, Victoria St, Hill St and New Bridge Rd, skipping Sth Bridge Rd and Upp Cross St.
	Hougang South ↔ New Bridge Rd		23 May	Shortened to New Bridge Rd Ter with the route extension of Service 63 under TransitLink Network Integration Exercise Phase 13.
		1994	3 July	Amended to ply Kallang Rd and Victoria St, skipping Crawford St, Nth Bridge Rd and Jln Sultan.
		1996	TBC	Serves additional bus stop outside Kallang Stn along Sims Ave.
		1997	7 December	Amended to ply Upp Pickering St, Sth Bridge Rd and Kreta Ayer Rd with the partial closure of New Bridge Rd to facilitate the construction of NE4DT19Chinatown station on the North East Line.
		1999	TBC	First bus from New Bridge Rd Ter brought forward to 0600 hrs on weekdays.
	62Hougang South ↔ New Bridge Rd 62AHougang South → Geylang Rd	2000	TBC	62AIntroduced from Hougang Sth Int to Geylang Rd (Mohd Salleh Mque) during morning peak hours on weekdays.
		2002	20 April	Amended to ply the reinstated New Bridge Rd, skipping Upp Pickering St, Sth Bridge Rd and Kreta Ayer Rd.
	62Punggol ↺ Sims Ave 62APunggol → Aljunied Rd	2003	7 December	62Extended to start from Punggol Temp Int and shortened to loop at Lor 1 Geylang/Sims Ave under North East Line Rationalisation Phase 3.
				62AAmended to start from Punggol Temp Int and terminate at Aljunied Rd (Aljunied Stn) under North East Line Rationalisation Phase 3.
		2004	27 April	Amended to ply Geylang Rd, Kallang Rd and Sims Ave towards Punggol Temp Int with the temporary conversion of Lor 1 Geylang to one-way traffic.
			TBC	62Last bus extended to 2340 hrs daily.
			6 December	Amended to ply the reinstated Lor 1 Geylang towards Punggol Temp Int, skipping Geylang Rd, Kallang Rd and Sims Ave.
		2011	20 June	62Last bus extended to 2350 hrs daily.
		2013	31 March	Designated wheelchair-accessible bus service (WAB).
			22 September	Serves new bus stop outside Wisma AUPE along Upp Paya Lebar Rd.
(Current)		2016	4 September	Operations transferred to Go-Ahead Singapore.
			25 September	Serves new pair of bus stops outside Waterwoods and after Punggol Field along Punggol East.

Service 63

1st Generation (1971 - 1981)

Operator	Route	Year	Date	Service changes
Amalgamated Bus Company	Jln Bt Merah ↔ MacPherson	1971	11 April	Introduced between Gagak Selari Barat Ter and MacPherson Ter under 1971 Bus Reorganisation.
		1973	1 July	Operations transferred to Singapore Bus Services.
		1975	2 February	Amended to ply new slip road from Tiong Bahru Rd to Outram Rd with the conversion of Seng Poh Rd to one-way traffic.
			2 March	Amended to ply Sims Ave towards MacPherson Ter with the conversion of Geylang Rd to one-way traffic.
	Labrador ↔ MacPherson	1976	4 January	Extended to Alexandra Rd Ter.
		1977	12 April	Amended to ply Tiong Bahru Rd and Lower Delta Rd, skipping Jln Membina and Kim Tian Rd.
	Bukit Merah ↔ MacPherson	1981	15 February	Amended to Bt Merah Int.
			5 July	Amended to ply Cantonment Rd towards Bt Merah Int, skipping a portion of Neil Rd and New Bridge Rd.
			15 November	Integrated with Service 44 and discontinued.

2nd Generation (Current)

Operator	Route	Year	Date	Service changes
(Current) Known as prior to 1 November 2001	Bukit Merah ↺ Circuit Rd	1992	29 November	Introduced between Bt Merah Int and Circuit Rd (Loop) under TransitLink Network Integration Exercise Phase 10.
	Rumah Tinggi ↺ Circuit Rd	1993	23 May	Amended to Rumah Tinggi Ter under TransitLink Network Integration Exercise Phase 13.
		1996	TBC	Serves additional bus stop outside Kallang Stn along Sims Ave.
		1997	7 December	Amended to ply Sth Bridge Rd, Neil Rd and Cantonment Rd with the partial closure of New Bridge Rd to facilitate the construction of NE4DT19Chinatown station on the North East Line.
		2002	20 April	Amended to ply Upp Cross St and the reinstated New Bridge Rd, skipping Sth Bridge Rd, Neil Rd and Cantonment Rd.
	Eunos ↺ Jln Rumah Tinggi		15 September	Integrated with Service 382, extended to start from Eunos Int and amended to loop at Jln Rumah Tinggi.
	63Eunos ↺ Jln Rumah Tinggi 63AEunos → Aljunied Rd	2006	25 September	63AIntroduced from Eunos Int to Aljunied Rd (Aljunied Stn) during morning peak hours on weekdays and after the last bus of Service 63 daily.
		2009	22 November	Serves new pair of bus stops outside and opposite MacPherson Stn along Circuit Lk.
		2010	28 February	Designated wheelchair-accessible bus service (WAB).
		2011	26 June	Amended to ply Lor Bengkok with the closure of Circuit Lk to facilitate the construction of DT26CC10MacPherson station on the Downtown Line.
	Eunos ↺ Jln Rumah Tinggi	2012	12 March	63ADiscontinued with the introduction of Service 63M.
		2014	28 September	Serves additional bus stop outside Automobile Megamart along Ubi Ave 2.
		2016	16 October	Amended to ply the reinstated Circuit Lk, skipping Lor Bengkok.
	63Eunos ↺ Jln Rumah Tinggi 63AEunos → Jln Rumah Tinggi	2021	11 April	63AIntroduced from Eunos Int to Jln Rumah Tinggi (Opp Blk 36), operating after the last bus of Service 63 daily. Wheelchair-accessible bus service (WAB) at launch.

Service 63M (Current)

Operator	Route	Year	Date	Service changes
(Current)	Eunos ↺ Circuit Rd	2012	12 March	Introduced between Eunos Int and Circuit Rd (Loop), operating during peak hours on weekdays and after the last bus of Service 63 daily. Wheelchair-accessible bus service (WAB) at launch.
		2013	TBC	Last bus extended to 0030 hrs daily.
		2014	13 July	Converted to full day service under the LTA's Bus Service Enhancement Programme (BSEP).
			28 September	Serves additional bus stop outside Automobile Megamart along Ubi Ave 2.
		2016	16 October	Amended to ply the reinstated Circuit Lk, skipping Lor Bengkok.
		2019	5 October	Last bus extended to 0035 hrs daily.

Service 64 (Current)

Operator	Route	Year	Date	Service changes
Singapore Traction Company	MacPherson ↔ Commonwealth Ave	1971	11 April	Introduced between MacPherson Ter and Commonwealth Ave Ter under 1971 Bus Reorganisation.
	MacPherson ↔ Ulu Pandan		9 May	Extended to Ulu Pandan Ter.
United Bus Company			6 December	Operations transferred to United Bus Company.
		1972	18 June	Amended to ply Bendemeer Rd towards Ulu Pandan Ter with the conversion of Serangoon Rd to one-way traffic.
(Current) Known as prior to 1 November 2001		1973	1 July	Operations transferred to Singapore Bus Services.
		1974	24 February	Amended to ply Grange Rd, Orchard Blvd and Paterson Rd towards Ulu Pandan Ter with the conversion of Orchard Rd to one-way traffic.
			1 October	Serves new bus stop outside Nan Hwa Girls' High Sch along Bencoolen St.
				Serves merged bus stop outside Sri Srinivasa Perumal Tp along Serangoon Rd.
		1977	19 June	Amended to ply Orchard Blvd and Grange Rd towards Ulu Pandan Ter with the full conversion of Orchard Rd to one-way traffic.
			29 August	Amended to ply Holland Ave and Holland Rd, skipping Nth Buona Vista Rd.
	MacPherson ↺ Mei Chin Rd	1979	25 November	Shortened to loop at Mei Chin Rd from MacPherson Ter, replacing the deleted sectors of Services 14 and 32.
		1980	13 July	Amended to ply Mei Chin Rd, Queensway and Alexandra Rd towards MacPherson Ter, skipping Commonwealth Ave with the conversion of Queens Circus to a signalised traffic junction.
	Sims Pl ↺ Mei Ling St	1992	28 June	Extended to Sims Pl Ter and amended to ply Clemenceau Ave, Havelock Rd, Ganges Ave, Lower Delta Rd and Tiong Bahru Rd under TransitLink Network Integration Exercise Phase 8, skipping Somerset Rd, Grange Rd, Orchard Blvd and Tanglin Rd.
			TBC	Amended to ply Clemenceau Ave towards Sims Pl Ter, skipping Tank Rd.
		2007	16 January	Skips the relocated bus stop outside Dhoby Ghaut Stn along Penang Rd.
		2008	2 December	Designated wheelchair-accessible bus service (WAB).
		2011	16 October	Amended to ply Middle Rd, Selegie Rd, Prinsep St and Bras Basah Rd towards Mei Ling St with the partial closure of Bencoolen St to facilitate the construction of DT21Bencoolen station on the Downtown Line.
		2016	11 December	Amended to ply the reinstated Bencoolen St, skipping Middle Rd, Selegie Rd, Prinsep St and Bras Basah Rd.
		2024	15 September	Serves new bus stop along Alexandra Rd opposite Cycle & Carriage.

Service 65 (Current)

Operator	Route	Year	Date	Service changes
Amalgamated Bus Company	Jln Bt Merah ↔ MacPherson	1971	11 April	Introduced between Gagak Selari Barat Ter and MacPherson Ter under 1971 Bus Reorganisation.
		1972	18 June	Amended to ply Bendemeer Rd towards Gagak Selari Barat Ter with the conversion of Serangoon Rd to one-way traffic.
		1973	11 March	Amended to ply Hoot Kiam Rd towards MacPherson Ter with the conversion of Irwell Bank Rd to one-way traffic.
(Current) Known as prior to 1 November 2001			1 July	Operations transferred to Singapore Bus Services.
		1974	24 February	Amended to ply Grange Rd and Orchard Blvd towards Jln Bt Merah Ter with the conversion of Orchard Rd to one-way traffic.
			1 October	Serves new bus stop outside Nan Hwa Girls' High Sch along Bencoolen St.
				Serves merged bus stop outside Sri Srinivasa Perumal Tp along Serangoon Rd.
	Lower Delta ↔ MacPherson	1980	6 April	Amended to Lower Delta Ter.
	HarbourFront ↔ Tampines	1987	12 April	Extended to Tampines Ter and World Trade Ctr Ter.
			29 November	Amended to Tampines Int.
		1988	23 October	Skips a pair of bus stops outside and opposite Tampines Stadium along Tampines Ave 5.
		1992	19 July	Amended to ply Orchard Lk due to the closure of Grange Rd to facilitate road expansion works.
		1997	TBC	Serves additional pair of bus stops outside and opposite Tampines Stadium along Tampines Ave 5.
		1999	TBC	Serves new pair of bus stops outside and opposite The Clearwater Condo along Bedok Reservoir Rd.
		2002	TBC	Serves new staggered bus stop outside Mutiara Crest along River Valley Rd, skipping the bus stop outside Mutiara View.
			TBC	Serves new pair of bus stops opposite and between Blks 731 and 734 along Bedok Reservoir Rd.
			7 July	Skips the bus stop opposite Mandarin Singapore along Orchard Rd.
		2005	2 July	Amended to ply Grange Rd with the partial closure of Somerset Rd.
		2006	29 October	Serves new bus stop outside VivoCity along Telok Blangah Rd.
		2008	7 December	Skips removed bus stop opposite Temenggong D Mque along Telok Blangah Rd.
		2009	22 November	Serves new pair of bus stops outside and opposite MacPherson Stn along Circuit Lk.
		2011	26 June	Amended to ply Lor Bengkok with the closure of Circuit Lk to facilitate the construction of DT26CC10MacPherson station on the Downtown Line.
			16 October	Amended to ply Middle Rd, Selegie Rd, Prinsep St and Bras Basah Rd with the partial closure of Bencoolen St to facilitate the construction of DT21Bencoolen station on the Downtown Line.
		2014	23 March	Designated wheelchair-accessible bus service (WAB).
		2016	16 October	Amended to ply the reinstated Circuit Lk, skipping Lor Bengkok.
			11 December	Amended to ply the reinstated Bencoolen St, skipping Middle Rd, Selegie Rd, Prinsep St and Bras Basah Rd.
		2017	12 February	Serves new pair of bus stops before and after Ubi Rd 3 along Ubi Ave 2.
		2021	12 December	Amended to ply Tampines Ave 4 under Downtown Line 3 Rationalisation, replacing the deleted sectors of Service 22, skipping Tampines Ave 1 and a portion of Tampines Ave 5.

Service 66 (Current)

Operator	Route	Year	Date	Service changes
Known as prior to 1 November 2001	Tampines ↔ Jurong East	1989	17 December	Introduced between Tampines Int and Jurong East Int.
	Bedok ↔ Jurong East	1991	26 May	Shortened to Bedok Int under TransitLink Network Integration Exercise Phase 5.
		1994	TBC	First bus from Bedok Int brought forward to 0545 hrs on weekdays and Saturdays.
				First bus from Jurong East Int brought forward to 0530 hrs on weekdays and Saturdays.
		1997	TBC	Serves new pair of bus stops outside KK Women & Child Hosp along Bt Timah Rd.
	66Bedok ↔ Jurong East 66ABedok → Bt Timah Rd 66BJurong East → Serangoon Rd	1999	TBC	66AIntroduced from Bedok Int to Bt Timah Rd (Opp Tekka Ctr) on Sundays and Public Holidays.
			TBC	66BIntroduced from Jurong East Int to Serangoon Rd (Blk 663) on Sundays and Public Holidays.
		2000	TBC	Serves new bus stop before Goldhill Ave along Dunearn Rd.
		2001	TBC	Serves new pair of bus stops opposite Blk 761 and opposite Baywater along Bedok Nth Ave 3.
		2002	TBC	Serves new pair of bus stops opposite and between Blks 731 and 734 along Bedok Reservoir Rd.
		2003	TBC	Serves new bus stop outside Goh & Goh Bldg along Jln Jurong Kechil.
		2006	TBC	Skips a pair of removed bus stops outside and opposite Bedok Green Sec Sch along Bedok Nth Ave 3.
		2007	TBC	66First bus from Bedok Int brought forward to 0530 hrs on weekdays.
		2009	5 July	Amended to ply Boon Lay Way and Jurong East Ctrl with the closure of Jurong East St 12 to facilitate the Jurong East Modification Project (JEMP).
			22 November	Serves new pair of bus stops outside and opposite MacPherson Stn along Circuit Lk.
	66Bedok ↔ Jurong East 66ABedok → Bt Timah Rd 66BJurong East → Serangoon Rd 66CJurong East → Bt Batok Ctrl	2010	18 September	66CIntroduced from Jurong East Int to Bt Batok Ctrl (Opp Blk 628) during the partial full day closure of the North–South Line to facilitate the Jurong East Modification Project (JEMP).
	66Bedok ↔ Jurong East 66ABedok → Bt Timah Rd 66BJurong East → Serangoon Rd		20 September	66CDiscontinued.
		2011	26 June	Amended to ply Lor Bengkok with the closure of Circuit Lk to facilitate the construction of DT26CC10MacPherson station on the Downtown Line.
			4 September	Serves new bus stop outside Botanic Gdns Stn along Bt Timah Rd.
			19 November	Amended to Bedok Temp Int.
			17 December	Amended to Jurong East Temp Int.
		2012	11 March	Serves new bus stop outside Blk 204 along Bedok Nth Int.
			26 March	Designated wheelchair-accessible bus service (WAB).
			9 December	Amended to ply Upp Bt Timah Rd and Bt Timah Lk with the partial closure of Jln Jurong Kechil to facilitate the construction of DT5Beauty World station on the Downtown Line.
		2014	26 January	Amended to ply the reinstated Jln Jurong Kechil, skipping Upp Bt Timah Rd and Bt Timah Lk.
			30 November	Amended to Bedok Integrated Transport Hub.
(Current)		2016	12 June	Operations transferred to Tower Transit Singapore.
			16 October	Amended to ply the reinstated Circuit Lk, skipping Lor Bengkok.
		2017	12 February	Serves new pair of bus stops before and after Ubi Rd 3 along Ubi Ave 2.
			23 April	Serves relocated bus stop before PIE along Bt Batok Rd.
		2018	28 October	Skips bus stop before Winstedt Rd along Bt Timah Rd with the relocation of the bus stop outside Newton FC.
		2019	24 February	Serves reinstated bus stop before Winstedt Rd along Bt Timah Rd with the reversion in the relocation of the bus stop outside Newton FC.
			23 June	Amended to ply Bt Batok East Ave 6, Bt Batok West Ave 6 and Bt Batok West Ave 8, skipping Bt Batok West Ave 3, Bt Batok Ctrl and Bt Batok East Ave 3.
		2020	6 December	Amended to relocated Jurong East Temp Int.
	66Bedok ↔ Jurong East 66CJurong East → Jln Jurong Kechil	2021	31 May	66ADiscontinued.
				66BDiscontinued.
				66CIntroduced from Jurong East Int to Jln Jurong Kechil (Opp Beauty World Stn) during peak hours on weekdays. Wheelchair-accessible bus service (WAB) at launch.
	Jurong East ↺ Beauty World		12 December	66Shortened to loop at Upp Bt Timah Rd from Jurong East Int under Downtown Line 3 Rationalisation. 66CDiscontinued with the route cutback of 66.

Service 67 (Current)

Operator	Route	Year	Date	Service changes
	Choa Chu Kang ↔ Tampines	1991	26 May	Introduced between Tampines Int and Choa Chu Kang Int under TransitLink Network Integration Exercise Phase 5.
		1993	23 May	Integrated with Service 4 and amended to ply Tampines Ave 1, Bedok Reservoir Rd, Bedok Nth Ave 3, New Upp Changi Rd, Sims Ave East/Changi Rd, Sims Ave/Geylang Rd, Kallang Rd and Lavender St under TransitLink Network Integration Exercise Phase 13.
		1994	TBC	First bus from Tampines Int brought forward to 0530 hrs on weekdays and Saturdays. Last bus from Tampines Int extended to 2330 hrs daily.
		1996	TBC	Serves additional bus stop outside Kallang Stn along Sims Ave.
		1997	TBC	Serves new pair of bus stops outside KK Women & Child Hosp along Bt Timah Rd.
			TBC	Serves additional pair of bus stops outside and opposite Tampines Stadium along Tampines Ave 5.
		1999	TBC	Serves new pair of bus stops outside and opposite The Clearwater Condo along Bedok Reservoir Rd.
(Current) Known as prior to 10 May 2004			26 December	Operations transferred to Trans Island Bus Services.
				First bus from Choa Chu Kang Int brought forward to 0530 hrs on Sundays and Public Holidays.
		2000	TBC	Serves new bus stop before Goldhill Ave along Dunearn Rd.
	67Choa Chu Kang ↔ Tampines 67A WeekdaysChoa Chu Kang → Dunearn Rd Sundays & Public HolidaysChoa Chu Kang → Bt Timah Rd		TBC	67AIntroduced from Choa Chu Kang Int to Dunearn Rd (Opp Coronation Plaza) during morning peak hours on weekdays, and from Choa Chu Kang Int to Bt Timah Rd (KK Women & Child Hosp) on Sundays and Public Holidays.
		2001	TBC	Serves new pair of bus stops opposite Blk 761 and opposite Baywater along Bedok Nth Ave 3.
	67Choa Chu Kang ↔ Tampines 67A WeekdaysChoa Chu Kang → Dunearn Rd Sundays & Public Holidays (Direction 1)Choa Chu Kang → Bt Timah Rd Sundays & Public Holidays (Direction 2)Tampines → Bt Timah Rd	2003	TBC	67AAlternate route introduced from Tampines Int to Bt Timah Rd (Little India Stn) on Sundays and Public Holidays.
	67Choa Chu Kang ↔ Tampines 67A WeekdaysChoa Chu Kang → Dunearn Rd Sundays & Public Holidays (Direction 1)Choa Chu Kang → Bt Timah Rd Sundays & Public Holidays (Direction 2)Tampines → Bt Timah Rd 67CTampines → Geylang Rd		25 August	67CIntroduced from Tampines Int to Geylang Rd (City Plaza) during morning peak hours on weekdays.
	67Choa Chu Kang ↔ Tampines 67A WeekdaysChoa Chu Kang → Dunearn Rd Sundays & Public Holidays (Direction 1)Choa Chu Kang → Bt Timah Rd Sundays & Public Holidays (Direction 2)Tampines → Bt Timah Rd	2004	19 March	67CDiscontinued.
	67Choa Chu Kang ↔ Tampines 67AChoa Chu Kang → Dunearn Rd 67W Direction 1Choa Chu Kang → Bt Timah Rd Direction 2Tampines → Bt Timah Rd		TBC	67A 67WSunday/Public Holiday routes from Choa Chu Kang Int and Tampines Int to Bt Timah Rd re-numbered as Short-Trip 67W instead of Short-Trip 67A.
		2006	TBC	Skips a pair of removed bus stops outside and opposite Bedok Green Sec Sch along Bedok Nth Ave 3.
		2007	TBC	67WRoute from Choa Chu Kang Int extended to terminate at Bt Timah Rd (Little India Stn).
		2010	21 February	Serves new pair of bus stops outside and opposite Blk 220 CP along Bedok Nth Ave 3.
			23 May	Skips temporarily closed bus stop outside Assumption Voc Inst along Upp Bt Timah Rd to facilitate the construction of DT2Cashew station along the Downtown Line.
		2011	4 September	Serves new bus stop outside Botanic Gardens Stn along Bt Timah Rd.
		2015	1 March	Serves reinstated bus stop outside Assumption Pathway Sch along Upp Bt Timah Rd.
			11 October	Designated wheelchair-accessible bus service (WAB).
	67Choa Chu Kang ↔ Tampines 67W Direction 1Choa Chu Kang → Bt Timah Rd Direction 2Tampines → Bt Timah Rd	2016	28 June	67ADiscontinued.
	67Choa Chu Kang ↔ Tampines 67WTampines → Bt Timah Rd	2018	TBC	67WRoute from Choa Chu Kang Int to Little India was discontinued.
			28 October	Skips bus stop before Winstedt Rd along Bt Timah Rd with the relocation of the bus stop outside Newton FC.
			16 December	Amended to new Choa Chu Kang Int.
		2019	24 February	Serves reinstated bus stop before Winstedt Rd along Bt Timah Rd with the reversion in the relocation of the bus stop outside Newton FC.
	Choa Chu Kang ↔ Tampines	2021	11 April	Amended to ply the extended southbound Upp Bt Timah Rd towards Tampines Int, skipping Jln Anak Bt.
				67WDiscontinued.
		2022	3 April	Serves additional bus stop outside Jln Besar Stn Exit A along Jln Besar.

Service 68

1st Generation (2003 - 2008)

Operator	Route	Year	Date	Service changes
	Tampines ↺ Tampines St 92	2003	16 June	Introduced between Tampines Int and Tampines St 92 (Loop) as a peak hour service on weekdays.
		2006	TBC	Last bus (AM peak) brought forward to 0920 hrs.
		2008	11 August	Discontinued.

2nd Generation (Current)

Operator	Route	Year	Date	Service changes
(Current)	Pasir Ris ↺ Tampines	2018	1 April	Introduced between Pasir Ris Int and Tampines Int (Loop), operating between 0530 hrs and 2345 hrs daily from Pasir Ris Int. Wheelchair-accessible bus service (WAB) at launch.
		2019	24 February	Serves 2 new pairs of bus stops outside and opposite Blk 609D, outside Blk 602B and outside Blk 619A along Tampines Ave 6.
	68Pasir Ris ↺ Tampines 68ATampines Ave 11 → Tampines 68BTampines → Tampines Ave 11		18 November	68AIntroduced from Tampines Ave 11 (Opp Reebonz Bldg) to Tampines Int during morning peak hours on weekdays. Wheelchair-accessible bus service (WAB) at launch.
				68BIntroduced from Tampines Int to Tampines Ave 11 (Reebonz Bldg) during evening peak hours on weekdays. Wheelchair-accessible bus service (WAB) at launch.
			22 December	Serves a new pair of bus stops outside and opposite Blk 614 along Tampines Ave 6.

Service 69 (Current)

Operator	Route	Year	Date	Service changes
(Current) Known as prior to 1 November 2001	Tampines ↺ Bedok	1995	18 September	Introduced between Tampines Int and Bedok Int (Loop) with the opening of Temasek Polytechnic.
		1999	TBC	Serves new pair of bus stops outside and opposite The Clearwater Condo along Bedok Reservoir Rd.
			TBC	First bus from Tampines Int brought forward to 0530 hrs on weekdays and Saturdays. Last bus from Tampines Int extended to 2330 hrs daily.
	69Tampines ↺ Bedok 69ABedok → Tampines Ave 1	2000	TBC	69AIntroduced from Bedok Int to Tampines Ave 1 (Temasek Poly West G) during morning peak hours on weekdays.
		2001	TBC	Serves new pair of bus stops opposite Blk 761 and opposite Baywater along Bedok Nth Ave 3.
	Tampines ↺ Bedok	2005	TBC	69ADiscontinued.
		2006	TBC	Skips a pair of removed bus stops outside and opposite Bedok Green Sec Sch along Bedok Nth Ave 3.
		2011	19 November	Amended to loop at Bedok Temp Int.
		2012	11 March	Serves new bus stop outside Blk 204 along Bedok Nth Int.
			26 March	Designated wheelchair-accessible bus service (WAB).
		2014	30 November	Amended to loop at Bedok Integrated Transport Hub.
		2017	24 December	Amended to ply Tampines Ctrl 8 and Tampines Concourse towards Tampines Int.
		2021	12 December	Serves new pair of bus stops before and after Heartbeat @ Bedok along Bedok Nth St 1.

Service 70 (Current)

Operator	Route	Year	Date	Service changes
Associated Bus Services	RAF Seletar ↔ Lor 5 Geylang	1971	11 April	Introduced between RAF Seletar Ter and Lor 5 Geylang Ter under 1971 Bus Reorganisation.
(Current) Known as prior to 1 November 2001		1973	1 July	Operations transferred to Singapore Bus Services.
		1975	2 March	Amended to ply Geylang Rd towards Lor 5 Geylang Ter with the conversion of Sims Ave to one-way traffic.
	Jln Kayu ↔ Prince Edward	1977	16 May	Integrated with Service 110, shortened to Jln Kayu Ter, amended to ply Guillemard Rd and extended to Prince Edward Ter.
				Revised to serve Piccadilly Rd in both directions on weekdays and Saturdays only.
		1978	16 January	Amended to skip Piccadilly Rd during the day on weekdays and Saturdays with the splitting of Service 214 to Services 214E and 214W.
		1979	11 February	Amended to ply the extended Shenton Way, Palmer Rd and Anson Rd, skipping Parsi Rd.
	Jln Kayu ↔ Shenton Way	1987	28 June	Amended to Shenton Way Ter.
	Yio Chu Kang ↔ Shenton Way	1992	3 May	Extended to Yio Chu Kang Ter and converted to day service under TransitLink Network Integration Exercise Phase 7.
		1994	29 May	Serves 2 new pairs of bus stops outside The Concourse, outside Golden Mile Twr and outside and opposite Suntec City along Nicoll Highway.
		2000	TBC	Serves new bus stop after Shenton Way along Palmer Rd.
			TBC	Serves additional bus stop outside Clifford Ctr along Collyer Quay.
		2001	15 April	Amended to ply Esplanade Dr, skipping Connaught Dr/Empress Pl.
			15 July	Amended to ply Yio Chu Kang Lk and Boundary Rd.
		2003	16 March	Amended to ply Eunos Ave 5, Eunos Rd 8, Tg Katong Rd and Geylang Rd with the partial closure of Paya Lebar Rd to facilitate the construction of CC9EW8Paya Lebar station on the Circle Line.
			TBC	Serves bus stop outside City Plaza along Geylang Rd, skipping the bus stop outside Tg Katong Cplx along Tg Katong Rd.
			21 June	Amended to ply Serangoon Ctrl and Upp Serangoon Rd under North East Line Rationalisation Phase 1.
			TBC	Serves new bus stop outside Serangoon Stn along Serangoon Ctrl.
		2004	20 April	Amended to ply Mountbatten Rd, Geylang Rd, Kallang Rd, Victoria St, Jln Sultan and Beach Rd to facilitate reinstatement works for the collapsed Nicoll Highway.
			6 December	Amended to ply the reinstated Nicoll Highway, skipping Mountbatten Rd, Geylang Rd, Kallang Rd, Victoria St, Jln Sultan and Beach Rd.
		2005	2 July	Serves bus stop outside Fullerton Sq along Fullerton Rd with the abolition of the bus stop outside Clifford Ctr along Collyer Quay.
		2009	23 August	Amended to ply the reinstated Paya Lebar Rd, skipping Eunos Ave 5, Eunos Rd 8, Tg Katong Rd and Geylang Rd.
	70Yio Chu Kang ↔ Shenton Way 70BYio Chu Kang Rd → Serangoon Central	2012	27 August	70BIntroduced from Yio Chu Kang Rd (Opp Serenity Pk) to Serangoon Ctrl (Serangoon Stn) during morning peak hours on weekdays.
			3 December	Designated wheelchair-accessible bus service (WAB).
		2013	22 September	Serves new bus stop outside Wisma AUPE along Upp Paya Lebar Rd.
		2017	25 June	Amended to the relocated Shenton Way Ter.

Service 70X/70M (Current)

Operator	Route	Year	Date	Service changes
(Current) Known as prior to 1 November 2001	Yio Chu Kang ↔ Lor 1 Geylang	1992	3 May	Introduced between Yio Chu Kang Ter and Lor 1 Geylang Ter as an alternate route of Service 70 during off peak periods on weekdays and Saturdays and throughout the day on Sundays and Public Holidays under TransitLink Integration Exercise Phase 7, numbered as Service 70X.
	Yio Chu Kang ↺ Temasek Ave	2000	16 October	Extended to loop at Temasek Ave.
		2001	15 July	Amended to ply Yio Chu Kang Lk and Boundary Rd.
		2003	16 March	Amended to ply Eunos Ave 5, Eunos Rd 8, Tg Katong Rd and Geylang Rd with the partial closure of Paya Lebar Rd to facilitate the construction of CC9EW8Paya Lebar station on the Circle Line.
			TBC	Serves bus stop outside City Plaza along Geylang Rd, skipping the bus stop outside Tg Katong Cplx along Tg Katong Rd.
			21 June	Amended to ply Serangoon Ctrl and Upp Serangoon Rd under North East Line Rationalisation Phase 1.
			TBC	Serves new bus stop outside Serangoon Stn along Serangoon Ctrl.
		2004	20 April	Amended to ply Mountbatten Rd, Geylang Rd, Kallang Rd, Victoria St, Jln Sultan and Beach Rd to facilitate reinstatement works for the collapsed Nicoll Highway.
				Serves additional bus stop opposite Marina Sq along Raffles Ave.
	70XYio Chu Kang ↺ Temasek Ave 70AYio Chu Kang → Temasek Ave		TBC	70AIntroduced from Yio Chu Kang Ter to Temasek Ave (Opp The Ritz-Carlton), operating after the last bus of Service 70X daily.
			6 December	Amended to ply the reinstated Nicoll Highway, skipping Mountbatten Rd, Geylang Rd, Kallang Rd, Victoria St, Jln Sultan and Beach Rd.
	70MYio Chu Kang ↺ Temasek Ave 70AYio Chu Kang → Temasek Ave	2008	28 January	70X 70MRe-numbered from Service 70X to Service 70M.
		2009	23 August	Amended to ply the reinstated Paya Lebar Rd, skipping Eunos Ave 5, Eunos Rd 8, Tg Katong Rd and Geylang Rd.
		2012	3 December	Designated wheelchair-accessible bus service (WAB).
		2013	22 September	Serves new bus stop outside Wisma AUPE along Upp Paya Lebar Rd.

Service 71

1st Generation (1971 - 1992)

Operator	Route	Year	Date	Service changes
Associated Bus Services	Upp Thomson Rd ↔ Lor 5 Geylang	1971	11 April	Introduced between Yio Chu Kang Rd Ter and Lor 5 Geylang Ter under 1971 Bus Reorganisation.
		1973	1 July	Operations transferred to Singapore Bus Services.
		1975	2 March	Amended to ply Geylang Rd towards Lor 5 Geylang Ter with the conversion of Sims Ave to one-way traffic.
	Upp Thomson Rd ↔ Lor 1 Geylang	1977	17 October	Extended to Geylang Fringe Car Pk.
		1979	26 March	Amended to ply Yio Chu Kang Rd, skipping Jln Woodbridge.
	Old Upp Thomson ↔ Lor 1 Geylang		26 October	Amended to Old Upp Thomson Ter.
		1980	13 October	Amended to ply Ang Mo Kio Ave 9 and Ang Mo Kio Ave 4 with the partial closure of Yio Chu Kang Rd to facilitate redevelopment.
		1981	5 June	Amended to ply the diverted Yio Chu Kang Rd, skipping Ang Mo Kio Ave 9.
		1992	3 May	Integrated with Service 70/70X and discontinued under TransitLink Network Integration Exercise Phase 7.

2nd Generation (Current)

Operator	Route	Year	Date	Service changes
(Current)	Yio Chu Kang ↺ Bishan St 11	2017	9 December	Introduced between Yio Chu Kang Int and Bishan St 11 (Loop) under the LTA's Bus Service Enhancement Programme (BSEP), operating between 0600 hrs and 2330 hrs daily. Wheelchair-accessible bus service (WAB) at launch.
	71Yio Chu Kang ↺ Bishan St 11 71AAng Mo Kio Ave 4 → Bishan Rd	2025	17 March	71AIntroduced from Ang Mo Kio Ave 4 (Mayflower Stn Exit 5) to Bishan Rd (Opp Bishan Stn) during morning peak hours on weekdays. Wheelchair-accessible bus service (WAB) at launch.

Service 72

1st Generation (1971 - 1992)

Operator	Route	Year	Date	Service changes
Associated Bus Services	Serangoon Garden ↔ Tg Rhu Rd	1971	11 April	Introduced between Serangoon Gdn Ter and Tg Rhu Ter under 1971 Bus Reorganisation.
		1973	1 July	Operations transferred to Singapore Bus Services.
		1976	30 December	Amended to ply Sims Ave/Geylang Rd and the extended Tg Katong Rd, skipping Guillemard Rd.
		1977	31 October	Amended to skip Chartwell Dr, Burghley Dr, Berwick Dr, Tavistock Ave, Hemsley Ave and Kensington Pk Rd with the introduction of Service 217.
	Serangoon Garden ↺ Tg Rhu Rd	1984	27 May	Amended to loop at Tg Rhu Rd from Serangoon Gdn Ter.
	Serangoon ↺ Tg Rhu Rd	1988	13 March	Amended to Serangoon Int.
		1992	3 May	Integrated with Services 76 & 158 and discontinued under TransitLink Network Integration Exercise Phase 7.

2nd Generation (Current)

Operator	Route	Year	Date	Service changes
(Current) Known as prior to 1 November 2001	Yio Chu Kang ↺ Ang Mo Kio Ave 5	1996	2 September	Introduced between Yio Chu Kang Ter and Ang Mo Kio Ave 5 (Loop) as a peak hour service on weekdays.
	Yio Chu Kang ↔ Tampines	1998	30 March	Integrated with Service 80, extended to Tampines Int and converted to full day service.
		1999	TBC	First bus from Tampines Int brought forward to 0515 hrs on weekdays and Saturdays.
			TBC	Last bus from Tampines Int extended to 2345 hrs daily.
		2000	TBC	Serves new pair of bus stops outside and opposite Tampines Dormitory along Tampines Ave 10.
	72Yio Chu Kang ↔ Tampines 72AYio Chu Kang → Upp Serangoon Rd		TBC	72AIntroduced from Yio Chu Kang Ter to Upp Serangoon Rd (Opp Nativity Ch Ctr) during evening peak hours on weekdays.
		2002	TBC	72First bus from Tampines Int brought forward to 0545 hrs on Sundays and Public Holidays.
			TBC	Serves new pair of bus stops before and after Tampines Ave 9 along Tampines Ave 10.
	72Yio Chu Kang ↔ Tampines 72AYio Chu Kang → Hougang Ctrl	2003	21 June	Amended to ply Hougang Ctrl and Upp Serangoon Rd under North East Line Rationalisation Phase 1.
				72AShortened to terminate at Hougang Ctrl (Opp Hougang Ctrl Int) under North East Line Rationalisation Phase 1.
	Yio Chu Kang ↔ Tampines	2006	TBC	72ADiscontinued.
		2007	22 May	Designated wheelchair-accessible bus service (WAB).
		2009	19 April	Serves new pair of bus stops outside Blk 834 and outside Hougang Polyclinic along Hougang Ave 4.
	72Yio Chu Kang ↔ Tampines 72AYio Chu Kang → Hougang Ctrl	2012	30 July	72AIntroduced from Yio Chu Kang Ter to Hougang Ctrl (Opp Hougang Ctrl Int) during morning peak hours on weekdays. Wheelchair-accessible bus service (WAB) at launch.
	72Yio Chu Kang ↔ Tampines 72AYio Chu Kang → Hougang Ctrl 72BYio Chu Kang → Ang Mo Kio Ave 5	2013	2 January	72BIntroduced from Yio Chu Kang Ter to Ang Mo Kio Ave 5 (ITE College Ctrl) during morning peak hours on weekdays. Wheelchair-accessible bus service (WAB) at launch.
		2017	24 December	Amended to ply Tampines Ctrl 8 and Tampines Concourse towards Tampines Int.
		2022	27 February	Amended to ply the realigned Tampines Rd, skipping Tampines Lk and a portion of Tampines Ave 10.

Service 73/73A (1971 - 1974)

Operator	Route	Year	Date	Service changes
Associated Bus Services	Yio Chu Kang Rd ↔ Tg Pagar	1971	16 June	Introduced between Yio Chu Kang Rd Ter and Tg Pagar Ter.
		1972	18 June	Amended to ply Bendemeer Rd towards Tg Pagar Ter with the conversion of Serangoon Rd to one-way traffic.
		1973	1 July	Operations transferred to Singapore Bus Services.
		1974	3 February	Shortened to Toa Payoh Town Ctr Ter and re-numbered Service 73 under 1974 Bus Rationalisation.

Service 73 (Current)

Operator	Route	Year	Date	Service changes
(Current) Known as prior to 1 November 2001	Toa Payoh ↔ Upp Thomson Rd	1974	3 February	Re-numbered from Service 73/73A as a service between Toa Payoh Town Ctr Ter and Yio Chu Kang Rd Ter.
		1977	11 July	Amended to ply Yio Chu Kang Rd, skipping Jln Woodbridge.
	Toa Payoh ↔ Old Upp Thomson	1979	26 October	Amended to Old Upp Thomson Ter.
	Toa Payoh ↺ Old Upp Thomson Rd	1980	9 March	Amended to loop at Old Upp Thomson Rd from Toa Payoh Town Ctr Ter.
			13 October	Amended to ply Ang Mo Kio Ave 9 and Ang Mo Kio Ave 4 with the partial closure of Yio Chu Kang Rd to facilitate redevelopment.
		1981	5 June	Amended to ply the realigned Yio Chu Kang Rd, skipping Ang Mo Kio Ave 9.
		1983	6 February	Amended to ply CTE towards Old Upp Thomson Rd with the closure of temporary slip road between Braddell Rd and Lor Chuan.
			20 June	Amended back to ply Lor Chuan towards Old Upp Thomson Rd with the opening of new link road between Braddell Rd and Lor Chuan under Braddell Flyover.
			26 December	Amended to Toa Payoh Int.
	Toa Payoh ↔ Yio Chu Kang	1988	24 January	Shortened to Yio Chu Kang Ter.
	Toa Payoh ↺ Serangoon North Ave 4	1992	20 September	Amended to loop at Serangoon Nth Ave 4 from Toa Payoh Int under TransitLink Network Integration Exercise Phase 9.
	Toa Payoh ↔ Ang Mo Kio	1993	5 December	Extended to Ang Mo Kio Int under TransitLink Network Integration Exercise Phase 14.
		1994	TBC	First bus from Ang Mo Kio Int brought forward to 0530 hrs daily.
		1996	TBC	First bus from Toa Payoh Int brought forward to 0545 hrs on weekdays and Saturdays.
		1998	31 May	Amended to Toa Payoh Temp Int.
				Serves new pair of bus stops outside and opposite Toa Payoh Swim Cplx along Lor 6 Toa Payoh.
		2002	24 March	Amended to Ang Mo Kio Temp Int.
	Ang Mo Kio ↺ Toa Payoh		19 May	Amended to loop at Toa Payoh Integrated Transport Hub from Ang Mo Kio Temp Int.
		2005	19 February	Serves additional pair of bus stops outside Jubilee and opposite Blk 710 along Ang Mo Kio Ave 8.
		2007	28 April	Amended to Ang Mo Kio Integrated Transport Hub.
		2012	3 December	Designated wheelchair-accessible bus service (WAB).
	73Ang Mo Kio ↺ Toa Payoh 73TAng Mo Kio → Toa Payoh	2021	11 April	73TIntroduced from Ang Mo Kio Int to Toa Payoh Int, operating after the last bus of Service 73 daily. Wheelchair-accessible bus service (WAB) at launch.

Service 74 (Current)

Operator	Route	Year	Date	Service changes
(Current) Known as prior to 1 November 2001	Ang Mo Kio Ave 6 ↔ Clementi	1979	16 July	Introduced between Ang Mo Kio Ave 6 Ter and Clementi Ave 3 Ter.
	Ang Mo Kio ↔ Clementi		12 August	Amended to Ang Mo Kio Ave 3 Ter.
		1980	16 November	Amended to Clementi Int.
		1981	5 July	Amended to Ang Mo Kio Ctrl 2 Ter.
		1983	10 April	Amended to Ang Mo Kio Int.
		1987	12 August	Skips removed bus stop after Joan Rd along Lornie Rd.
		1988	8 March	Amended to ply Clementi Ave 3 with the abolition of right turning from Clementi Ave 3 to Commonwealth Ave West.
		1990	21 February	Skips removed bus stop opposite Jasmine Rd along Upp Thomson Rd.
	Upp Serangoon ↔ Clementi		10 June	Extended to Upp Serangoon Ter and amended to ply Ang Mo Kio Ave 6 and Marymount Rd, skipping Ang Mo Kio Ave 1.
		1991	28 April	Amended to ply Clementi Ave 2 towards Clementi Int under TransitLink Network Integration Exercise Phase 4.
	Upp Serangoon ↔ Buona Vista	1993	5 December	Integrated with Service 202 and amended to Buona Vista Ter under TransitLink Network Integration Exercise Phase 14.
	Hougang Ctrl ↔ Buona Vista	1994	18 December	Amended to Hougang Ctrl Int.
		1999	TBC	Skips temporarily closed bus stops outside and opposite Sch of Mechanical & Mfg along Commonwealth Ave West.
	74Hougang Ctrl ↔ Buona Vista 74AHougang Ctrl Int → Clementi Rd	2000	TBC	74AIntroduced from Hougang Ctrl Int to Clementi Rd (Ngee Ann Poly) during morning peak hours on weekdays.
		2001	18 October	Serves reinstated bus stops outside Dover Stn along Commonwealth Ave West.
		2003	17 March	74AAmended to terminate at bus stop Opp Ngee Ann Poly due to opening of new flyover between Jalan Anak Bukit and Clementi Rd.
	Hougang Ctrl ↔ Buona Vista	2005	TBC	74ADiscontinued.
		2006	TBC	Serves merged bus stop opposite Buona Vista Stn along Nth Buona Vista Rd with the closure of the staggered bus stop.
		2014	29 September	Designated wheelchair-accessible bus service (WAB).
		2018	28 October	Amended to ply southbound Lornie Highway towards Buona Vista Ter.
		2019	23 June	Amended to ply northbound Lornie Highway towards Hougang Ctrl Int.

Service 74A (1994 - 1995)

Operator	Route	Year	Date	Service changes
	Upp Serangoon → Ang Mo Kio Stn	1994	19 June	Introduced between Upp Serangoon Ter and Ang Mo Kio Ave 3 (Ang Mo Kio Stn) as a route variant of Service 74.
	Hougang Ctrl → Ang Mo Kio Stn		17 December	Amended to Hougang Ctrl Int.
		1995	8 January	Integrated with Service 165 and discontinued.

Service 75 (Current)

Operator	Route	Year	Date	Service changes
	Clementi ↔ Anson Rd	1981	15 June	Introduced between Clementi Int and Anson Rd Ter as a peak hour semi-express service on weekdays and Saturdays, replacing the deleted sectors of Service 191.
	Clementi ↺ Empress Pl		21 September	Extended to loop at Empress Pl from Clementi Int.
			11 October	Serves staggered bus stop outside Tunas Bldg along Anson Rd, skipping the bus stop outside Intl Plaza.
		1984	10 June	Amended to ply Connaught Dr, Collyer Quay, Raffles Quay, Shenton Way, Cantonment Lk, Cantonment Rd, Outram Rd, Tiong Bahru Rd, Zion Rd and Hoot Kiam Rd towards Clementi Int and converted to full day trunk service, skipping St. Andrew's Rd, Coleman St, Canning Rise, Oxley Rise and Exeter Rise.
		1986	14 September	Skips the bus stop outside Tanglin Police Stn along Napier Rd.
	Clementi ↔ Marina Ctr		30 November	Extended to Marina Ctr Ter.
		1987	6 April	Skips removed bus stop before College Rd along Outram Rd.
		1988	8 March	Amended to ply Clementi Ave 3 with the abolition of right turning from Clementi Ave 3 to Commonwealth Ave West.
	Choa Chu Kang ↔ Marina Ctr		31 July	Extended to Choa Chu Kang Ter.
			25 August	Amended to ply Choa Chu Kang Ave 1 with the completion of the road junction between Teck Whye Ave and Choa Chu Kang Ave 1.
		1989	22 May	First bus from Choa Chu Kang Ter brought forward to 0520 hrs on weekdays and Saturdays.
		1990	10 March	Extended to interim terminal along Choa Chu Kang Ave 4.
			8 April	Amended to Choa Chu Kang Int.
			16 December	Amended to ply Choa Chu Kang Way, skipping Choa Chu Kang Dr.
	Bukit Panjang ↔ Marina Ctr	1993	3 January	Shortened to Bt Panjang Ter with the introduction of Service 179 under TransitLink Network Integration Exercise Phase 11.
(Current) Known as prior to 10 May 2004		1995	6 August	Operations transferred to Trans Island Bus Services.
				First bus from Marina Ctr Ter brought forward to 0600 hrs on weekdays and 0610 hrs on Saturdays.
		1997	TBC	First bus from Marina Ctr Ter revised to 0630 hrs on weekdays and Saturdays.
		1998	TBC	First bus from Marina Ctr Ter brought forward to 0615 hrs on weekdays and Saturdays.
		1999	26 December	Amended to Bt Panjang Int.
				First bus from Bt Panjang Int brought forward to 0530 hrs on Sundays and Public Holidays. Last bus from Bt Panjang Int brought forward to 2330 hrs daily.
				Last bus from Marina Ctr Ter brought forward to 2345 hrs daily.
		2000	TBC	Serves additional bus stop outside Clifford Ctr along Collyer Quay.
		2003	12 October	Serves bus stop opposite Bt Timah Plaza along Jln Anak Bt with the removal of the bus stop under the PIE Flyover.
		2005	2 July	Serves bus stop outside Fullerton Sq along Fullerton Rd with the abolition of the bus stop outside Clifford Ctr along Collyer Quay.
			30 October	Serves new bus stop outside Blk 94 along Zion Rd.
		2010	23 May	Skips temporarily closed bus stop outside Assumption Voc Inst along Upp Bt Timah Rd to facilitate the construction of DT2Cashew station along the Downtown Line.
		2011	3 July	Serves additional pair of bus stops opposite Min of Defence and before Cashew Rd along Upp Bt Timah Rd.
		2012	1 July	Designated wheelchair-accessible bus service (WAB).
			16 December	Extended to start from and terminate at Bt Panjang Rd with the opening of Bt Panjang Temp Bus Pk and the closure of Bt Panjang Int.
	75Bt Panjang ↔ Marina Ctr 75ABt Panjang → Clementi Rd	2013	29 July	75AIntroduced from Bt Panjang Rd (Blk 604) to Clementi Rd (Opp SIM HQ) during morning peak hours on weekdays. Wheelchair-accessible bus service (WAB) at launch.
		2015	1 March	Serves reinstated bus stop outside Assumption Pathway Sch along Upp Bt Timah Rd, skipping a pair of bus stops opposite Ministry of Defence and before Cashew Rd.
		2016	1 May	Amended to ply Esplanade Dr with the partial closure of Fullerton Rd.
		2017	4 September	75AExtended to start from Bt Panjang Temp Bus Pk.
				Serves additional pair of bus stops outside and opposite Ten Mile Junction Stn along Woodlands Rd.
				Serves a pair of bus stops outside and opposite Blk 180 along Jelebu Rd, skipping the pair of bus stops outside and opposite Bt Panjang Plaza.
	75Gali Batu ↔ Marina Ctr 75AGali Batu → Clementi Rd	2021	23 January	Extended to Gali Batu Ter, serving 2 additional pairs of bus stops after KJE Slip Rd, Blk 632 CP, opposite Blk 632 CP and opposite Blk 635A along Woodlands Rd.
				75First bus from Woodlands Rd (Aft KJE Slip Rd) extended to 0525 hrs daily.
			24 February	Amended to the relocated Marina Ctr Ter.
	Gali Batu ↔ Marina Ctr		11 April	Amended to ply the extended southbound Upp Bt Timah Rd towards Marina Ctr Ter, skipping Jln Anak Bt.
				75ADiscontinued with the route amendment of Service 75 to the extended southbound Upp Bt Timah Rd.
			26 December	Amended to ply Esplanade Dr towards Gali Batu Ter with the closure of Connaught Dr.
	Gali Batu ↔ Bukit Merah	2023	17 December	Shortened to Bt Merah Int under Thomson–East Coast Line Bus Rationalisation.

Service 76

1st Generation (1981 - 1988)

Operator	Route	Year	Date	Service changes
	Clementi ↺ Jurong East Ctrl	1981	24 November	Introduced between Clementi Int and Jurong East Ctrl (Loop).
	Clementi ↺ Jurong East Ave 1	1982	12 September	Amended to ply Jurong East Ctrl, Jurong East Ave 1 and Jurong Town Hall Rd.
	Jurong East ↺ Clementi	1985	30 June	Amended to start from Jurong East Int and loop at Clementi Int.
		1988	13 March	Integrated with Service SS2 and discontinued.

2nd Generation (Current)

Operator	Route	Year	Date	Service changes
(Current) Known as prior to 1 November 2001	Yio Chu Kang ↔ Marine Parade	1989	5 March	Introduced between Yio Chu Kang Ter and Marine Parade Ter.
		1992	3 May	Amended to ply Paya Lebar Rd, Tg Katong Rd, Amber Rd and Marine Parade Rd under TransitLink Network Integration Exercise Phase 7, skipping Ubi Ave 2, Eunos Link, Jln Eunos, Still Rd and Still Rd Sth.
		1994	TBC	First bus from Yio Chu Kang Ter brought forward to 0530 hrs on weekdays and Saturdays. Last bus from Yio Chu Kang Ter extended to 2315 hrs daily.
			TBC	Last bus from Marine Parade Ter extended to 2315 hrs daily.
	76Yio Chu Kang ↺ Siglap Rd 76AYio Chu Kang → Siglap Rd	2001	16 September	Amended to loop at Siglap Rd from Yio Chu Kang Ter with the closure of Marine Parade Ter.
				76AIntroduced from Yio Chu Kang Ter to Siglap Rd (Opp Mandarin Gdns), operating after the last bus of Service 76 daily.
		2003	16 March	Amended to ply Eunos Ave 5 and Eunos Rd 8 with the partial closure of Paya Lebar Rd to facilitate the construction of CC9EW8Paya Lebar station on the Circle Line.
			TBC	Serves new bus stop outside Victoria Sch along Marine Parade Rd.
			TBC	Serves new bus stop outside Shell Kiosk along Tg Katong Rd.
	76Yio Chu Kang ↺ Siglap Rd 76AYio Chu Kang → Marine Parade Rd	2005	25 April	76AExtended to terminate at Marine Parade Rd (Victoria Sch).
		2007	22 May	Designated wheelchair-accessible bus service (WAB).
		2009	23 August	Amended to ply the reinstated Paya Lebar Rd, skipping Eunos Ave 5 and Eunos Rd 8.
	76Yio Chu Kang ↺ Marine Terr 76AYio Chu Kang → Marine Terrace	2011	30 January	76Shortened to loop at Marine Terr, skipping Siglap Rd.
				76AShortened to terminate at Marine Terr (Opp CHIJ Katong Convent).
		2013	22 September	Serves new bus stop outside Wisma AUPE along Upp Paya Lebar Rd.
	Yio Chu Kang ↔ Eunos	2016	20 March	76Shortened to Eunos Int with the introduction of Service 134.
				76ADiscontinued with the route amendment of Service 76 to Eunos Int.

Service 77

1st Generation (1980 - 1986)

Operator	Route	Year	Date	Service changes
	Ang Mo Kio ↺ Bendemeer Rd	1980	17 August	Introduced between Ang Mo Kio Ave 3 Ter and Bendemeer Rd (Loop).
		1981	5 July	Amended to Ang Mo Kio Ctrl 2 Ter.
		1983	10 April	Amended to Ang Mo Kio Int.
		1986	16 March	Integrated with Service 162 and discontinued.

2nd Generation (Current)

Operator	Route	Year	Date	Service changes
	Marina Ctr ↺ Farrer Rd	1995	5 November	Introduced between Marina Ctr Ter and Farrer Rd (Loop).
	Marina Ctr ↔ Bukit Batok	1996	TBC	Extended to Bt Batok Int, skipping Farrer Rd.
		1998	TBC	Serves new pair of bus stops outside and opposite Highgate Condo along Toh Tuck Rd.
Known as prior to 10 May 2004	Bukit Batok ↔ Marina Ctr	2000	18 June	Operations transferred to Trans Island Bus Services.
	77Bukit Batok ↔ Marina Ctr 77ABukit Batok → Toh Tuck Rd		TBC	77AIntroduced from Bt Batok Int to Toh Tuck Rd (Good Luck View) during morning peak hours on weekdays.
		2002	7 July	Skips the bus stop outside Orchard Emerald along Orchard Rd.
		2003	TBC	Serves new bus stop outside Goh & Goh Bldg along Jln Jurong Kechil.
		2005	2 July	Amended to ply Grange Rd with the partial closure of Somerset Rd.
	Bukit Batok ↔ Marina Ctr	2009	2 January	77ADiscontinued.
		2012	1 July	Designated wheelchair-accessible bus service (WAB).
			9 December	Amended to ply Upp Bt Timah Rd and Bt Timah Lk with the partial closure of Jln Jurong Kechil to facilitate the construction of DT5Beauty World station on the Downtown Line.
		2014	26 January	Amended to ply the reinstated Jln Jurong Kechil, skipping Upp Bt Timah Rd and Bt Timah Lk.
(Current)		2016	29 May	Operations transferred to Tower Transit Singapore.
		2021	27 February	Amended to the relocated Marina Ctr Ter.

Service 78

1st Generation (1980 - 1983)

Operator	Route	Year	Date	Service changes
	Clementi ↺ Queensway	1980	17 November	Introduced between Clementi Int and Queensway (Loop) as a peak hour service on weekdays and Saturdays.
		1983	28 February	Discontinued.

2nd Generation (Current)

Operator	Route	Year	Date	Service changes
Known as prior to 1 November 2001	Jurong East ↺ Clementi Ave 3	1988	19 June	Introduced between Jurong East Int and Clementi Ave 3 (Loop).
		1990	1 July	Integrated with Service 245 and amended to ply Pandan Rd with the opening of Boon Lay Int.
		2001	TBC	Serves additional bus stop outside Blk 131 along Jurong East St 13.
			TBC	Amended to ply West Coast Rd with the partial closure of Teban Gdns Rd.
		2002	12 May	Amended to ply West Coast Rd towards Jurong East Int, skipping eastbound Teban Gdns Rd.
				First bus brought forward to 0545 hrs daily. Last bus extended to 0020 hrs daily.
		2004	4 September	Amended to ply Pandan Ave towards Clementi Ave 3.
		2005	3 April	Amended to ply West Coast Rd towards Clementi Ave 3, skipping westbound Teban Gdns Rd.
		2009	5 July	Amended to ply Boon Lay Way and Jurong East Ctrl with the closure of Jurong East St 12 to facilitate the Jurong East Modification Project (JEMP).
		2011	17 December	Amended to Jurong East Temp Int.
		2012	25 June	Designated wheelchair-accessible bus service (WAB).
	78Jurong East ↺ Clementi Ave 3 78AJurong East → Tg Penjuru	2013	4 March	78AIntroduced from Jurong East Temp Int to Tg Penjuru (Opp CLP Intl) during morning peak hours on weekdays. Wheelchair-accessible bus service (WAB) at launch.
(Current)		2016	12 June	Operations transferred to Tower Transit Singapore.
	78Jurong Gateway Rd ↺ Clementi Ave 3 78AJurong Gateway Rd → Tg Penjuru	2020	6 December	Amended to start from and terminate at Jurong Gateway Rd with the relocation of Jurong East Temp Int.
	78Jurong Town Hall ↺ Clementi Ave 3 78AJurong Town Hall → Tg Penjuru	2023	26 November	Extended to Jurong Town Hall Int.
				78First bus brought forward to 0540 hrs daily.

Service 79

1st Generation (1983 - 1984)

Operator	Route	Year	Date	Service changes
	Jurong East ↺ Nth Bridge Rd	1983	27 February	Introduced between Jurong East Ter and Nth Bridge Rd (Loop).
		1984	24 June	Integrated with Service 147 and discontinued.

2nd Generation (1985 - 1988)

Operator	Route	Year	Date	Service changes
	Jurong East ↺ Empress Pl	1985	16 June	Introduced between Jurong East Ter and Empress Pl (Loop).
			30 June	Amended to Jurong East Int.
	Jurong East ↔ Marina Ctr	1986	30 November	Extended to Marina Ctr Ter.
		1988	3 January	Serves staggered bus stop opposite Treasury Bldg along Shenton Way, skipping the bus stop opposite Marina Hse.
			11 January	Serves merged bus stop along Ayer Rajah Rd.
			18 December	Integrated with Service 97 and discontinued.

3rd Generation (Current)

Operator	Route	Year	Date	Service changes
Known as prior to 1 November 2001	Jurong East ↺ Boon Lay	1992	24 May	Introduced between Jurong East Int and Boon Lay Int (Loop).
		1995	15 January	Amended to ply Jln Boon Lay, Chin Bee Dr, Quality Rd, Chin Bee Ave, Third Chin Bee Rd and Intl Rd with the route amendment of Service 246, skipping Boon Lay Way.
		2001	TBC	Serves additional bus stop outside Blk 131 along Jurong East St 13.
			TBC	Amended to ply West Coast Rd with the partial closure of Teban Gdns Rd.
		2006	18 June	Amended to loop at Boon Lay Temp Int.
		2009	5 July	Amended to ply Boon Lay Way and Jurong East Ctrl with the closure of Jurong East St 12 to facilitate the Jurong East Modification Project (JEMP).
			27 December	Amended to loop at Boon Lay Integrated Transport Hub.
		2011	17 December	Amended to Jurong East Temp Int.
		2012	25 June	Designated wheelchair-accessible bus service (WAB).
(Current)	79Jurong East ↺ Boon Lay 79AJurong East → Boon Lay	2016	12 June	Operations transferred to Tower Transit Singapore.
				79AIntroduced from Jurong East Temp Int to Boon Lay Int, operating after the last bus of Service 79 daily. Wheelchair-accessible bus service (WAB) at launch.
			23 October	Serves an additional pair of bus stops before and after Penjuru Rd along Jln Buroh.
	79Boon Lay ↺ Jurong Gateway Rd 79ABoon Lay → Jurong Town Hall Rd	2020	6 December	79Amended to start from Boon Lay Int and loop at Jurong Gateway Rd with the relocation of Jurong East Temp Int.
				79AAmended to start from Boon Lay Int and terminate at the bus stop outside Jurong East Lib along Jurong Town Hall Rd with the relocation of Jurong East Temp Int.
		2023	8 January	Amended to ply realigned Teban Gdns Rd with the permanent partial closure of Teban Gdns Rd to facilitate the construction of JE7Pandan Reservoir station on the Jurong Region Line, skipping the bus stop before Pandan Gdns along Jurong Town Hall Rd.
	79Jurong Town Hall ↺ Boon Lay 79TJurong Town Hall → Boon Lay	2024	26 May	Amended to start from Jurong Town Hall Int and loop at Boon Lay Int via Jurong West St 64 due to upgrading works at Boon Lay Int.
				79ADiscontinued with the amendment of Service 79 to start from Jurong Town Hall Int and loop at Boon Lay Int.
				79TIntroduced from Jurong Town Hall Int to Boon Lay Int, operating after the last bus of Service 79 daily. Wheelchair-accessible bus service (WAB) at launch.

Service 80

1st Generation (1971 - 1985)

Operator	Route	Year	Date	Service changes
Associated Bus Services	Upp Changi ↔ Prince Edward	1971	11 April	Introduced between Upp Changi Ter and Prince Edward Ter under 1971 Bus Reorganisation.
		1972	18 June	Amended to ply Bendemeer Rd towards Prince Edward Ter with the conversion of Serangoon Rd to one-way road.
		1973	1 July	Operations transferred to Singapore Bus Services.
		1974	8 December	Amended to skip Market St.
		1976	15 February	Serves staggered bus stop between Bank of India and Hong Leong Holdings along Robinson Rd.
			14 March	Serves staggered bus stop outside The Cenotaph along Connaught Dr, skipping the bus stop opposite Singapore Cricket Club.
		1978	15 January	Amended to ply Jln Sultan, skipping Sumbawa Rd.
		1979	11 February	Amended to ply the extended Shenton Way, Palmer Rd and Anson Rd, skipping Parsi Rd.
		1985	23 June	Discontinued.

2nd Generation (1996 - 1998)

Operator	Route	Year	Date	Service changes
	Tampines ↔ Hougang Ctrl	1996	3 September	Introduced between Tampines Int and Hougang Ctrl Int.
		1998	30 March	Integrated with Service 72 and discontinued.

3rd Generation (Current)

Operator	Route	Year	Date	Service changes
(Current) Known as prior to 1 November 2001	Sengkang ↔ HarbourFront	1999	12 December	Introduced between Sengkang Ter and World Trade Ctr Ter with the integration of Services 84 and 864.
	80Sengkang ↔ HarbourFront 80ASengkang → Aljunied Rd	2000	TBC	80AIntroduced from Sengkang Ter to Aljunied Rd (Aljunied Stn) during morning peak hours on weekdays.
		2001	28 April	Amended to Sengkang Temp Int.
		2002	TBC	80Last bus from HarbourFront Int extended to 0015 hrs daily.
		2003	18 January	Amended to Sengkang Integrated Transport Hub.
			20 June	Serves new bus stop opposite Hougang Ctrl Int along Hougang Ctrl.
		2004	TBC	80Last bus from HarbourFront Int extended to 0025 hrs daily.
		2006	29 October	Serves new bus stop outside VivoCity along Telok Blangah Rd.
		2007	20 August	Designated wheelchair-accessible bus service (WAB).
		2008	7 December	Skips removed bus stop opposite Temenggong D Mque along Telok Blangah Rd.
		2013	22 September	Serves new bus stop outside Wisma AUPE along Upp Paya Lebar Rd.
		2019	23 June	Amended to ply Cantonment Lk and Cantonment Rd towards Sengkang Int.
				Serves new bus stop outside Tower 15 along Hoe Chiang Rd.
		2022	28 August	Temporarily amended to ply Hougang Ave 4 and Hougang Ave 10 with the partial closure of Hougang Ctrl to facilitate the construction of CR8NE14Hougang station on the Cross Island Line.

Service 80A (1971 - 1974)

Operator	Route	Year	Date	Service changes
Associated Bus Services	Upp Serangoon Rd 10.5 km ↔ Prince Edward	1971	11 April	Introduced between Upp Serangoon Rd 10.5 km Ter and Prince Edward Ter under 1971 Bus Reorganisation.
		1972	18 June	Amended to ply Bendemeer Rd towards Prince Edward Ter with the conversion of Serangoon Rd to one-way road.
		1973	1 July	Operations transferred to Singapore Bus Services.
		1974	3 February	Discontinued under 1974 Bus Rationalisation.

Service 81 (Current)

Operator	Route	Year	Date	Service changes
Associated Bus Services	Upp Changi ↔ New Bridge Rd	1971	11 April	Introduced between Upp Changi Ter and New Bridge Rd Ter under 1971 Bus Reorganisation.
		1972	18 June	Amended to ply Bendemeer Rd towards New Bridge Rd Ter with the conversion of Serangoon Rd to one-way traffic.
(Current) Known as prior to 1 November 2001		1973	1 July	Operations transferred to Singapore Bus Services.
		1974	1 October	Serves merged bus stop outside Sri Srinivasa Perumal Tp along Serangoon Rd.
		1976	18 July	Amended to skip Tanah Merah Besar Rd and Nicoll Dr on Sundays and Public Holidays.
		1986	11 May	Amended to skip Kuala Loyang Rd.
			1 September	Skips a pair of removed bus stops along Tampines Rd to facilitate the construction of TPE.
			23 December	Serves merged bus stop along the new carriageway of Tampines Rd.
		1987	6 June	Amended to the relocated New Bridge Rd Ter.
			20 September	Skips 6 pairs of removed bus stops along Tampines Rd with the opening of TPE.
			27 September	Amended to ply the extended Eu Tong Sen St towards Upp Changi Ter to facilitate the first stage of road expansion along New Bridge Rd.
			1 November	Amended to ply Eu Tong Sen St towards Upp Changi Ter to facilitate the second stage of road expansion along New Bridge Rd.
			13 December	Serves new staggered bus stop opposite Peninsula Plaza along Nth Bridge Rd, skipping the bus stop outside St Andrew's Cath.
	Tampines ↔ New Bridge Rd	1988	23 October	Extended to Tampines Int.
		1989	29 January	Serves relocated bus stop opposite Sri Mariamman Tp along Sth Bridge Rd, skipping a removed bus stop opposite Jamae Mque.
			30 July	Amended to ply Loyang Ave, Pasir Ris Dr 1 and Elias Rd, skipping Tampines Expressway (TPE).
			28 August	Serves new pair of bus stops outside and opposite Pasir Ris Gdns along Elias Rd.
		1993	11 April	Amended to ply Victoria St, Hill St and New Bridge Rd, skipping Nth Bridge Rd, Sth Bridge Rd and Neil Rd.
		1994	TBC	First bus from Tampines Int brought forward to 0530 hrs on weekdays.
		1996	3 September	Amended to ply Pasir Ris Dr 12 and Pasir Ris Dr 1, skipping Elias Rd.
		1997	7 December	Amended to ply Upp Pickering St, Sth Bridge Rd and Kreta Ayer Rd with the partial closure of New Bridge Rd to facilitate the construction of NE4DT19Chinatown station on the North East Line.
		1999	10 July	Amended to ply Middle Rd and Victoria St, skipping Waterloo St, Stamford Rd and Bras Basah Rd.
		2002	20 April	Amended back to ply the reinstated New Bridge Rd, skipping Upp Pickering St, Sth Bridge Rd and Kreta Ayer Rd.
			TBC	Serves new pair of bus stops after Sommerville Rd and after Sunshine Lodge along Upp Serangoon Rd.
		2003	TBC	Serves new pair of bus stops outside Potong Pasir Stn along Upp Serangoon Rd.
	Tampines ↔ Serangoon		27 July	Shortened to Serangoon Int and amended to ply Hougang Ave 3 and Upp Serangoon Rd under North East Line Rationalisation Phase 2.
		2007	23 June	Amended to ply Tampines Svc Rd.
	Tampines ↺ Serangoon Ctrl	2011	3 September	Amended to loop at Serangoon Ctrl with the opening of Serangoon Integrated Transport Hub.
		2012	29 April	Serves new bus stop outside Blk 612 along Pasir Ris Dr 1.
		2017	21 August	Designated wheelchair-accessible bus service (WAB).
		2022	30 October	Temporarily amended to ply Pasir Ris St 11 and Pasir Ris St 12 with the partial closure of Pasir Ris Dr 1 to facilitate the construction of CR4Pasir Ris East station on the Cross Island Line.
		2023	8 October	Temporarily amended to ply Pasir Ris Ctrl and Pasir Ris Dr 8 with the partial closure of Pasir Ris Dr 1 to facilitate the construction of CR5CP1EW1Pasir Ris station on the Cross Island Line.

Service 81A (1971 - 1974)

Operator	Route	Year	Date	Service changes
Associated Bus Services	Upp Serangoon Rd ↔ New Bridge Rd	1971	11 April	Introduced between Upp Serangoon Rd 10.5 km Ter and New Bridge Rd Ter under 1971 Bus Reorganisation.
		1972	18 June	Amended to ply Bendemeer Rd towards New Bridge Rd Ter with the conversion of Serangoon Rd to one-way traffic.
		1973	1 July	Operations transferred to Singapore Bus Services.
		1974	3 February	Amended to skip Jln Besar, Bencoolen St and Bras Basah Rd and re-numbered Service 85 under 1974 Bus Rationalisation.

Service 82 (Current)

Operator	Route	Year	Date	Service changes
Associated Bus Services	Punggol ↔ Prince Edward	1971	11 April	Introduced between Punggol Ter and Prince Edward Ter under 1971 Bus Reorganisation.
		1972	18 June	Amended to ply Bendemeer Rd towards Prince Edward Ter with the conversion of Serangoon Rd to one-way traffic.
		1973	1 July	Operations transferred to Singapore Bus Services.
		1974	8 December	Amended to ply the extended Robinson Rd, skipping Market St.
		1976	15 February	Serves new staggered bus stop between Bank of India and Hong Leong Holdings along Robinson Rd.
			14 March	Serves new staggered bus stop outside The Cenotaph along Connaught Dr, skipping the bus stop opposite Singapore Cricket Club.
		1978	15 January	Amended to ply Jln Sultan, skipping Sumbawa Rd.
		1979	11 February	Amended to ply the extended Shenton Way, Palmer Rd and Anson Rd, skipping Parsi Rd.
	Punggol ↔ Shenton Way	1987	28 June	Amended to Shenton Way Ter.
		1990	24 June	Serves additional bus stop opposite Hong Wen Sch along Victoria St.
		1992	29 March	Amended to ply Hougang Ave 10 and Hougang Ave 2 under TransitLink Network Integration Exercise Phase 6, skipping Hougang Ave 8.
		1994	3 July	Amended to ply Crawford St towards Punggol Ter.
		1995	17 December	Operations transferred to Trans Island Bus Services.
		1998	TBC	Skips 2 pairs of removed bus stops outside and opposite Punggol Mkt and opposite and after Lor Cheng Lim along Punggol Rd.
Known as prior to 1 November 2001		1999	29 August	Operations transferred to Singapore Bus Services.
				First bus from Shenton Way Ter brought forward to 0545 hrs on weekdays and Saturdays, and 0600 hrs on Sundays and Public Holidays.
			TBC	Skips removed bus stop opposite St. Anne's Ch along Punggol Rd.
			TBC	Serves reinstated bus stop outside Blk 298A along Punggol Rd.
		2000	TBC	Serves new bus stop after Shenton Way along Palmer Rd.
			10 June	Serves reinstated bus stop outside Blk 190C along Punggol Rd.
		2002	TBC	Calls at a new pair of bus stops after Sommerville Rd and after Sunshine Lodge along Upp Serangoon Rd.
		2003	TBC	Serves new pair of bus stops outside Potong Pasir Stn along Upp Serangoon Rd.
			TBC	Skips temporarily closed bus stop opposite Punggol Port Rd along Punggol Rd.
	82Serangoon ↺ Punggol Rd 82ASerangoon → Punggol Rd		7 December	82Amended to start from Serangoon Int, loop at Punggol Rd and amended to ply Punggol Field, Punggol Pl and Punggol Ctrl under North East Line Rationalisation Phase 3.
				82AIntroduced from Serangoon Int to Punggol Rd (Punggol Rd End), operating after the last bus of Service 82 daily.
	82Serangoon ↺ Punggol Rd 82ASerangoon → Punggol Ctrl	2004	TBC	82AShortened to terminate at Punggol Ctrl (Opp Blk 293). Last bus extended to 0020 hrs daily.
		2010	5 December	Serves reinstated bus stop outside Blk 604A along Punggol Rd.
	Punggol ↺ Serangoon Ctrl	2011	3 September	82Amended to start from Punggol Temp Int and loop at Serangoon Ctrl with the opening of Serangoon Integrated Transport Hub.
				82ADiscontinued with the route amendment of Service 82 to Punggol Temp Int.
		2013	31 March	Designated wheelchair-accessible bus service (WAB).
(Current)		2016	4 September	Operations transferred to Go-Ahead Singapore.
				First bus brought forward to 0515 hrs daily.

Service 83

1st Generation (1971 - 1992)

Operator	Route	Year	Date	Service changes
Associated Bus Services	Punggol ↔ New Bridge Rd	1971	11 April	Introduced between Punggol Ter and New Bridge Rd Ter under 1971 Bus Reorganisation.
		1972	18 June	Amended to ply Bendemeer Rd towards New Bridge Rd Ter with the conversion of Serangoon Rd to one-way traffic.
		1973	1 July	Operations transferred to Singapore Bus Services.
		1974	1 October	Serves merged bus stop outside Sri Srinivasa Perumal Tp along Serangoon Rd.
		1987	6 June	Amended to the relocated New Bridge Rd Ter.
			27 September	Amended to ply the extended Eu Tong Sen St towards Punggol Rd Ter to facilitate the first stage of road expansion along New Bridge Rd.
			1 November	Amended to ply Eu Tong Sen St towards Punggol Rd Ter to facilitate the second stage of road expansion along New Bridge Rd.
			13 December	Serves new staggered bus stop opposite Peninsula Plaza along Nth Bridge Rd, skipping the bus stop outside St Andrew's Cath.
		1988	20 March	Amended to ply Upp Cross St and New Bridge Rd, skipping Neil Rd.
		1990	2 September	Integrated with Service 101 and amended to ply Hougang Ave 8, Hougang Ave 2, Yio Chu Kang Lk, Yio Chu Kang Rd and Serangoon Ctrl.
		1992	29 March	Integrated with Service 147 and discontinued under TransitLink Network Integration Exercise Phase 6.

2nd Generation (Current)

Operator	Route	Year	Date	Service changes
	Sengkang ↺ Punggol Field	2001	23 December	Introduced between Sengkang Temp Int and Punggol Field (Loop).
		2003	18 January	Amended to Sengkang Integrated Transport Hub.
			9 February	Amended to ply Sengkang East Rd and Compassvale St, skipping Compassvale Rd.
	Sengkang ↺ Edgedale Plains		4 May	Amended to loop at Edgedale Plains temporarily.
	Sengkang ↺ Punggol Stn		20 June	Extended to loop at Punggol Ctrl with the opening of NE17PTCPunggol station on the North East Line.
	83Punggol ↺ Sengkang 83APunggol → Sengkang		30 November	Amended to start from Punggol Temp Int and loop at Sengkang Int.
				83AIntroduced from Punggol Temp Int to Sengkang Int, operating after the last bus of Service 83 daily
	Punggol ↺ Sengkang	2011	TBC	83ADiscontinued with the dropping of ‘A’ suffix for terminating trip.
		2014	29 June	Designated wheelchair-accessible bus service (WAB).
(Current)		2016	4 September	Operations transferred to Go-Ahead Singapore.
				First bus brought forward to 0520 hrs daily.
	83Punggol ↺ Sengkang 83TPunggol → Sengkang	2021	11 April	83TIntroduced from Punggol Temp Int to Sengkang Int, operating after the last bus of Service 83 daily. Wheelchair-accessible bus service (WAB) at launch.

Service 84

1st Generation (1971 - 1999)

Operator	Route	Year	Date	Service changes
Associated Bus Services	Upp Serangoon ↺ Upp Cross St	1971	3 July	Introduced between Upp Serangoon Ter and Upp Cross St (Loop).
		1973	1 July	Operations transferred to Singapore Bus Services.
	Upp Serangoon ↔ Tg Pagar Rd	1974	3 February	Extended to Tg Pagar Ter under 1974 Bus Rationalisation.
		1975	2 March	Amended to ply Sims Ave towards Upp Serangoon Ter with the conversion of Geylang Rd to one-way traffic.
		1979	1 August	Amended to temporary terminal at Lim Teck Kim Rd with the closure of Tg Pagar Ter.
	Upp Serangoon ↔ Anson Rd		23 December	Amended to Anson Rd Ter.
		1980	20 January	Amended to ply Hoe Chiang Rd towards Anson Rd Ter, skipping Lim Teck Kim Rd
		1982	13 June	Amended to ply Aljunied Way and Aljunied Rd.
	Upp Serangoon ↔ World Trade Ctr	1985	13 January	Extended to World Trade Ctr Ter.
		1987	27 September	Amended to ply the extended Eu Tong Sen St towards Upp Serangoon Ter to facilitate the first stage of road expansion along New Bridge Rd.
			1 November	Amended to ply Eu Tong Sen St towards Upp Serangoon Ter to facilitate the second stage of road expansion along New Bridge Rd.
			13 December	Serves new staggered bus stop opposite Peninsula Plaza along Nth Bridge Rd, skipping the bus stop outside St Andrew's Cath.
		1990	22 July	Serves additional bus stop outside Ellenborough Mkt along Eu Tong Sen St.
	Hougang Ctrl ↔ World Trade Ctr	1994	18 December	Amended to Hougang Ctrl Int.
		1996	TBC	Serves additional bus stop outside Kallang Stn along Sims Ave.
		1998	24 May	Amended to Hougang Ctrl Temp Int.
		1999	12 December	Integrated with Service 864 to form Service 80 and discontinued.

2nd Generation (2003 - 2005)

Operator	Route	Year	Date	Service changes
	Punggol Stn ↺ Punggol East	2003	15 September	Introduced between Punggol Ctrl (Punggol Stn) and Punggol East (Loop) as a peak hour one-directional service, operating on weekdays and Saturdays only.
	Punggol ↺ Punggol East		30 November	Amended to Punggol Temp Int.
		2005	12 March	Discontinued under Punggol LRT (East Loop) Rationalisation.

3rd Generation (2011 - 2024)

Operator	Route	Year	Date	Service changes
	Punggol ↺ Punggol Rd	2011	3 September	Introduced between Punggol Temp Int and Punggol Rd (Loop), replacing the deleted sectors of Service 82.
		2016	4 September	Operations transferred to Go-Ahead Singapore.
		2017	16 July	Designated wheelchair-accessible bus service (WAB).
		2018	26 August	Amended to ply Punggol Dr, Sentul Cres, Sumang Lk and Punggol Way with the partial closure of Punggol Rd.
		2020	23 February	Amended to ply Northshore Cres and Northshore Dr with the partial closure of Punggol Way and Punggol Rd.
	Punggol ↺ New Punggol Rd	2023	17 December	Amended to loop at New Punggol Rd with the permanent closure of Punggol Rd End.
		2024	23 June	Amended to ply the extended New Punggol Rd and converted into dual plate trunk service.

Service 84G (Current)

Operator	Route	Year	Date	Service changes
(Current)	Punggol ↺ New Punggol Rd	2024	23 June	Re-numbered from Service 84 as a service between Punggol Temp Int and New Punggol Rd (Loop) via Sentul Cres, Punggol Way and New Punggol Rd, operating between 0530 hrs and 0035 hrs daily. Wheelchair-accessible bus service (WAB) at launch.
			8 December	Serves additional bus stop outside Blk 437B along New Punggol Rd.

Service 84W (Current)

Operator	Route	Year	Date	Service changes
(Current)	Punggol ↺ New Punggol Rd	2024	23 June	Re-numbered from Service 84 as a service between Punggol Temp Int and New Punggol Rd (Loop) via New Punggol Rd, Punggol Way and Sentul Cres, operating between 0530 hrs and 0035 hrs daily. Wheelchair-accessible bus service (WAB) at launch.
	84WPunggol ↺ New Punggol Rd 84APunggol → New Punggol Rd		16 August	84AIntroduced from Punggol Temp Int to New Punggol Rd (Punggol Coast Stn) on an ad-hoc basis. Wheelchair-accessible bus service (WAB) at launch.
			2 September	84ARevised to operate during morning peak hours on weekdays.
			8 December	Serves an additional bus stop opposite Blk 437B along New Punggol Rd.

Service 85

1st Generation (1974 - 1991)

Operator	Route	Year	Date	Service changes
	Upp Serangoon Rd (10.5 km) ↔ New Bridge Rd	1974	3 February	Re-numbered from Service 81A as a service between Upp Serangoon Rd 10.5 km Ter and New Bridge Rd Ter under 1974 Bus Rationalisation.
	Upp Serangoon Rd (10.5 km) ↺ Sims Ave	1978	24 April	Amended to ply Jln Kolam Ayer and Kallang Bahru and shortened to loop at Sims Ave.
		1982	11 June	Amended to ply Bendemeer Rd and Geylang Bahru, skipping Jln Kolam Ayer.
	Hougang ↺ Sims Ave	1983	30 October	Amended to Hougang Int.
		1991	6 January	Discontinued under TransitLink Network Integration Exercise Phase 1.

2nd Generation (1999 - 2003)

Operator	Route	Year	Date	Service changes
Known as prior to 1 November 2001	Sengkang ↔ World Trade Ctr	1999	12 December	Re-numbered from Service 865 as a service between Sengkang Ter and World Trade Ctr Ter.
	85Sengkang ↔ World Trade Ctr 85ASengkang → Upp Serangoon Rd	2000	TBC	85AIntroduced from Sengkang Ter to Upp Serangoon Rd (Blk 205) during morning peak hours on weekdays.
	85Sengkang ↔ World Trade Ctr 85ASengkang → Upp Serangoon Rd 85BSengkang → Jln Besar		TBC	85BIntroduced from Sengkang Ter to Jln Besar (Bef Sim Lim Twr) on Saturdays, Sundays and Public Holidays.
		2001	28 April	Amended to Sengkang Temp Int.
		2002	7 July	Skips the bus stop opposite Mandarin Singapore along Orchard Rd.
			TBC	Serves new pair of bus stops after Sommerville Rd and after Sunshine Lodge along Upp Serangoon Rd.
	85Sengkang ↔ World Trade Ctr 85ASengkang → Upp Serangoon Rd	2003	18 January	Amended to Sengkang Integrated Transport Hub.
				85BDiscontinued.
			TBC	Serves new pair of bus stops outside Potong Pasir Stn along Upp Serangoon Rd.
			27 July	Discontinued under North East Line Rationalisation Phase 2.

3rd Generation (Current)

Operator	Route	Year	Date	Service changes
	Punggol ↔ Yishun	2006	1 January	Introduced between Punggol Temp Int and Yishun Int, operating between 0600 hrs and 2330 hrs from Punggol Temp Int and Yishun Int daily.
		2010	23 May	Amended to ply Sengkang East Way, Sengkang West Way and Jln Kayu, except during weekday morning peak hours towards Yishun Int.
		2011	31 July	Serves 3 new pairs of bus stops along Sengkang West Way.
		2012	19 November	Amended to ply Sengkang East Way, Sengkang West Way and Jln Kayu permanently.
		2013	9 June	Designated wheelchair-accessible bus service (WAB).
		2015	14 March	Amended to Yishun Temp Int.
(Current)		2016	4 September	Operations transferred to Go-Ahead Singapore.
				First bus from Punggol Temp Int brought forward to 0530 hrs on weekdays.
			25 September	Serves new pair of bus stops outside Waterwoods and after Punggol Field along Punggol East.
	85Punggol ↔ Yishun 85AYishun → Sengkang East Rd	2019	25 March	85AIntroduced from Yishun Temp Int to Sengkang East Rd (Sengkang Community Hub) during evening peak hours on weekdays. Wheelchair-accessible bus service (WAB) at launch.
			8 September	Amended to Yishun Integrated Transport Hub.

Service 85#

Operator	Route	Year	Date	Service changes
	Punggol ↔ Yishun	2010	23 May	Introduced between Punggol Temp Int and Yishun Int, plying the original route of Service 85 via Sengkang East Rd during weekday morning peak hours.
		2012	19 November	Discontinued with the permanent route amendment of Service 85 to Sengkang East Way, Sengkang West Way and Jln Kayu.

Service 86

1st Generation (1977 - 1983)

Operator	Route	Year	Date	Service changes
	Tampines Way ↺ Shenton Way	1977	13 June	Introduced between Tampines Way Ter and Shenton Way (Loop) as a semi-express service operating on weekdays and Saturdays only.
		1979	11 February	Amended to ply the extended Shenton Way, Keppel Rd and Anson Rd, skipping Parsi Rd.
		1981	11 October	Serves new staggered bus stop outside Tunas Bldg along Anson Rd, skipping the bus stop outside Intl Plaza.
	Hougang ↺ Shenton Way	1983	30 October	Amended to Hougang Int.
			18 December	Integrated with Service 97 and discontinued.

2nd Generation (Current)

Operator	Route	Year	Date	Service changes
(Current) Known as prior to 1 November 2001	Sengkang ↔ Ang Mo Kio	1999	12 December	Re-numbered from Service 866 as a service between Sengkang Ter and Ang Mo Kio Int.
		2000	10 June	Serves reinstated bus stop outside Blk 190C along Punggol Rd.
		2001	28 April	Amended to Sengkang Temp Int.
				First bus from Sengkang Temp Int brought forward to 0530 hrs on Saturdays, Sundays & Public Holidays.
		2002	24 March	Amended to Ang Mo Kio Temp Int.
	86Sengkang ↔ Ang Mo Kio 86AAng Mo Kio → Jln Kayu		TBC	86AIntroduced from Ang Mo Kio Temp Int to Jln Kayu (Bef Seletar Camp G) during morning peak hours on weekdays.
			31 December	Serves reinstated pair of bus stops before and after Sengkang West Ave along Jln Kayu.
		2003	18 January	Amended to Sengkang Integrated Transport Hub.
			9 February	Amended to ply Compassvale Dr, skipping Punggol Rd and Sengkang East Ave.
		2007	28 April	Amended to Ang Mo Kio Integrated Transport Hub.
	Sengkang ↔ Ang Mo Kio	2010	TBC	86ADiscontinued.
			2 December	Designated wheelchair-accessible bus service (WAB).
		2013	13 October	Amended to ply Sengkang West Ave and Sengkang West Rd with the partial closure of Jln Kayu.
	86Sengkang ↔ Ang Mo Kio 86AJln Kayu → Ang Mo Kio Ave 6 86BAng Mo Kio Ave 6 → Jln Kayu	2024	24 June	86AIntroduced from Jln Kayu (Aft Seletar Camp G) to Ang Mo Kio Ave 6 (Yio Chu Kang Stn) during morning peak hours on weekdays. Wheelchair-accessible bus service (WAB) at launch.
				86BIntroduced from Ang Mo Kio Ave 6 (Opp Yio Chu Kang Stn) to Jln Kayu (Bef Seletar Camp G) during evening peak hours on weekdays. Wheelchair-accessible bus service (WAB) at launch.

Service 87 (Current)

Operator	Route	Year	Date	Service changes
(Current) Known as prior to 1 November 2001	Sengkang ↔ Bedok	1999	19 September	Introduced between Sengkang Ter and Bedok Int.
		2001	28 April	Amended to Sengkang Temp Int.
				First bus from Sengkang Temp Int brought forward to 0530 hrs daily.
				First bus from Bedok Int brought forward to 0530 hrs daily.
		2003	18 January	Amended to Sengkang Integrated Transport Hub.
			20 June	Serves new bus stop opposite Hougang Ctrl Int along Hougang Ctrl.
		2011	28 August	Amended to ply Jln Tenaga, Bedok Reservoir Rd and Jln Damai with the partial closure of Kaki Bt Ave 1 to facilitate the construction of DT28Kaki Bukit station on the Downtown Line.
			19 November	Amended to Bedok Temp Int.
			3 December	Designated wheelchair-accessible bus service (WAB).
		2014	30 November	Amended to Bedok Integrated Transport Hub.
		2016	24 April	Amended to ply the reinstated Kaki Bt Ave 1, skipping Jln Tenaga, Bedok Reservoir Rd and Jln Damai.
		2017	21 October	Serves new bus stop outside Bedok Nth Stn along Bedok Nth Rd.
		2022	28 August	Temporarily amended to ply Hougang Ave 4 and Hougang Ave 10 with the partial closure of Hougang Ctrl to facilitate the construction of CR8NE14Hougang station on the Cross Island Line.

Service 88 (Current)

Operator	Route	Year	Date	Service changes
(Current) Known as prior to 1 November 2001	Pasir Ris ↔ Toa Payoh	1999	28 February	Introduced between Pasir Ris Int and Toa Payoh Temp Int.
			TBC	Skips removed bus stop opposite St. Anne's Ch along Punggol Rd.
			TBC	Serves reinstated bus stop outside Blk 298A along Punggol Rd.
		2000	10 June	Serves reinstated bus stop outside Blk 190C along Punggol Rd.
	88Pasir Ris ↔ Toa Payoh 88APunggol Rd → Ang Mo Kio Ave 3		TBC	88AIntroduced from Punggol Rd (St. Anne's Ch) to Ang Mo Kio Ave 3 (Opp Ang Mo Kio Stn) during morning peak hours on weekdays.
		2001	TBC	88Last bus from Toa Payoh Temp Int extended to 2340 hrs daily.
		2002	19 May	Amended to Toa Payoh Integrated Transport Hub.
			TBC	88AExtended to start from Punggol Rd (Blk 190C).
	Pasir Ris ↔ Toa Payoh	2004	TBC	88ADiscontinued.
		2005	TBC	Skips removed bus stop outside Muhajirin Mque along Braddell Rd.
	88Pasir Ris ↔ Toa Payoh 88AHougang Ave 4 → Ang Mo Kio Ave 3 88BAng Mo Kio Ave 6 → Ang Mo Kio Ave 5	2012	8 October	88AIntroduced from Hougang Ave 4 (Blk 919) to Ang Mo Kio Ave 3 (Opp Ang Mo Kio Stn) during morning peak hours on weekdays.
				88BIntroduced from Ang Mo Kio Ave 6 (Blk 207) to Ang Mo Kio Ave 5 (Bef Yio Chu Kang Rd) during morning peak hours on weekdays.
	88Pasir Ris ↔ Toa Payoh 88APunggol Rd → Ang Mo Kio Ave 3 88BAng Mo Kio Ave 3 → Ang Mo Kio Ave 5	2013	9 April	88AExtended to start from Punggol Rd (Blk 190C).
				88BShortened to start from Ang Mo Kio Ave 3 (Ang Mo Kio Stn).
			9 June	Designated wheelchair-accessible bus service (WAB).
		2014	24 August	Serves new pair of bus stops before and after Punggol Rd along TPE.

Service 89 (Current)

Operator	Route	Year	Date	Service changes
(Current) Known as prior to 1 November 2001	Hougang Ctrl Temp Int ↺ Changi AirFreight Ctr	1999	5 December	Introduced between Hougang Ctrl Temp Int and Changi Airport Cargo Cplx (Loop).
		2000	10 June	Serves reinstated bus stop outside Blk 190C along Punggol Rd.
	Hougang Ctrl ↺ Changi AirFreight Ctr	2001	20 May	Amended back to Hougang Ctrl Int.
		2003	TBC	Serves new pair of bus stops outside and opposite Loyang Ind Est along Loyang Ave.
		2008	TBC	Serves new bus stop outside Changi Beach CP 2 along Nicoll Dr, skipping the bus stop opposite Changi Beach CP 2.
		2012	29 April	Serves new bus stop outside Blk 612 along Pasir Ris Dr 1.
		2014	24 August	Serves new pair of bus stops before and after Punggol Rd along TPE.
		2015	22 June	Designated wheelchair-accessible bus service (WAB).
	89Hougang Ctrl ↺ Changi AirFreight Ctr 89APasir Ris Dr 1 → Airport Cargo Rd	2017	10 April	89AIntroduced from Pasir Ris Dr 1 (Blk 738) to Airport Cargo Rd (AirFreight Ter Bldg) during morning peak hours on weekdays. Wheelchair-accessible bus service (WAB) at launch.
	89Hougang Ctrl ↺ Changi AirFreight Ctr 89ATPE → Airport Cargo Rd	2021	5 July	89AExtended to start from the bus stop after Punggol Rd along TPE.
		2022	28 August	Temporarily amended to ply Hougang Ave 4 and Hougang Ave 10 with the partial closure of Hougang Ctrl to facilitate the construction of CR8NE14Hougang station on the Cross Island Line.
		2023	26 February	Temporarily amended to ply the bus-only corridor along Loyang Ave and Loyang Way with the partial closure of Loyang Ave to facilitate the construction of Loyang Viaduct and CR3Loyang station on the Cross Island Line, skipping 3 pairs of bus stops along Loyang Ave.
			8 October	Temporarily amended to ply Pasir Ris Ctrl and Pasir Ris Dr 8 with the partial closure of Pasir Ris Dr 1 to facilitate the construction of CR5CP1EW1Pasir Ris station on the Cross Island Line.

Service 90 (1971 - 1989)

Operator	Route	Year	Date	Service changes
ABC	Paya Lebar Airport ↔ Henderson Rd (Apr - Sep 1971)	1971	11 April	Introduced between Paya Lebar Airport Ter and Jln Bt Merah Ter under 1971 Bus Reorganisation.
	Paya Lebar Airport ↔ Commonwealth Ave (Sep 1971 - 1981)		14 September	Extended to Commonwealth Ave Ter.
		1974	3 February	Amended to ply MacPherson Rd and Aljunied Rd under 1974 Bus Rationalisation, skipping Paya Lebar Rd.
		1975	2 February	Amended to ply new slip road from Tiong Bahru Rd to Outram Rd with the conversion of Seng Poh Rd to one-way traffic.
			2 March	Amended to ply Sims Ave towards Paya Lebar Airport Ter with the conversion of Geylang Rd to one-way traffic.
		1976	1 October	Amended to Jln Ang Teng Ter.
		1977	17 May	Amended to ply Commonwealth Ave Extension and Nth Buona Vista Rd towards Commonwealth Ave Ter.
			29 August	Amended to ply Holland Ave, Holland Dr and Nth Buona Vista Rd towards Commonwealth Ave Ter.
	Commonwealth Ave ↺ Airport Rd (1981 - 1982)	1981	30 June	Amended to loop at Airport Rd with the closure of Jln Ang Teng Ter.
	Buona Vista ↺ Airport Rd (1982 - 1989)	1982	27 May	Amended to Buona Vista Ter.
		1987	6 April	Skips removed bus stop before College Rd along Outram Rd.
			27 September	Amended to ply the extended Eu Tong Sen St towards Airport Rd to facilitate the first stage of road expansion along New Bridge Rd.
			1 November	Amended to ply Eu Tong Sen St to facilitate the second stage of road expansion along New Bridge Rd.
		1988	20 March	Amended to ply Upp Cross St and New Bridge Rd, skipping Neil Rd.
		1989	5 November	Discontinued.

Service 90 (since 1993) / Short Trip 90A

Refer to Bus Service 90 for more information.

Service 91 (1971 - 1989)

Operator	Route	Year	Date	Service changes
STC	Paya Lebar Airport ↔ Prince Edward (1971 - Jun 1981)	1971	11 April	Introduced between Paya Lebar Airport Ter and Prince Edward Ter under 1971 Bus Reorganisation.
UBC			6 December	Operations transferred to UBC.
		1974	3 February	Amended to ply Paya Lebar Rd, Tg Katong Rd, Dunman Rd, Old Airport Rd and Mountbatten Rd under 1974 Bus Rationalisation, skipping MacPherson Rd and Aljunied Rd.
			8 December	Amended to ply the extended Robinson Rd, skipping Market St.
		1976	15 February	Serves new staggered bus stop between Bank of India and Hong Leong Holdings along Robinson Rd.
			14 March	Serves new staggered bus stop outside The Cenotaph along Connaught Dr, skipping the bus stop opposite Singapore Cricket Club.
			1 October	Amended to Jln Ang Teng Ter.
			30 December	Amended to ply Sims Ave/Geylang Rd and the extended Tg Katong Rd, skipping Guillemard Rd.
		1978	15 January	Amended to ply Jln Sultan, skipping Sumbawa Rd.
		1979	11 February	Amended to ply the extended Shenton Way, Palmer Rd and Anson Rd, skipping Parsi Rd.
	Prince Edward ↺ Airport Rd (Jun - Jul 1981)	1981	30 June	Amended to loop at Airport Rd with the closure of Jln Ang Teng Ter.
	Lor 1 Geylang ↺ Airport Rd (Jul 1981 - 1989)		5 July	Shortened to Geylang Fringe Car Pk.
		1989	5 November	Discontinued.

Service 91 (since 1995) / Short Trip 91A (2001 - 2012)

Refer to Bus Service 91 for more information.

Service 92 (1971 - 1993)

Operator	Route	Year	Date	Service changes
UBC	Paya Lebar Airport ↔ Jln Bt Merah (1971 - 1974)	1971	11 April	Introduced between Paya Lebar Airport Ter and Gagak Selari Barat Ter under 1971 Bus Reorganisation.
		1972	18 June	Amended to ply Bendemeer Rd towards Gagak Selari Barat Ter with the conversion of Serangoon Rd to one-way traffic.
		1973	11 March	Amended to ply Hoot Kiam Rd towards Jln Ang Teng Ter with the conversion of Irwell Bank Rd to one-way road.
	Paya Lebar Airport ↔ Alexandra Hosp (1974 - 1981)	1974	3 February	Extended to Alexandra Rd (Alexandra Hosp) Ter under 1974 Bus Rationalisation.
			24 February	Amended to ply Grange Rd and Orchard Blvd towards Alexandra Rd (Alexandra Hosp) Ter with the conversion of Orchard Rd to one-way road.
			1 October	Serves new bus stop outside Nan Hwa Girls' High Sch along Bencoolen St.
				Serves merged bus stop outside Sri Srinivasa Perumal Tp along Serangoon Rd.
		1976	1 October	Amended to Jln Ang Teng Ter.
	Alexandra Hosp ↺ Airport Rd (1981 - 1985)	1981	30 June	Amended to loop at Airport Rd with the closure of Jln Ang Teng Ter.
	Clementi ↺ Airport Rd (1985 - 1993)	1985	28 April	Integrated with Service 185 and extended to Clementi Int.
		1988	11 January	Serves merged bus stop along Ayer Rajah Rd.
			8 March	Amended to ply Clementi Ave 3 with the abolition of right turning from Clementi Ave 3 to Commonwealth Ave West.
		1992	19 July	Amended to ply Orchard Lk due to the closure of Grange Rd to facilitate road expansion works.
		1993	23 May	Integrated with Service 14 and discontinued under TransitLink Network Integration Exercise Phase 13.

Service 92 (since 1997) / Short Trip 92A (2001 - 2023) / 92A (since 2024) / 92B (2007 - 2023) / 92B (since 2025)

Refer to Bus Service 92 for more information.

Service 92M (2015 - 2024)

Operator	Year	Date	Service changes
(Current)	2015	30 August	Introduced between Ghim Moh Ter and Nth Buona Vista Rd (Loop), operating on Sundays and Public Holidays only. Wheelchair-accessible at launch.
	2017	9 July	Last bus extended to 2005 hrs, with special departures operating between Ghim Moh Ter and Nth Buona Vista Rd (Buona Vista Stn Exit D) until 2043 hrs.
	2023	10 September	Serves new bus stop opposite Ghim Moh Ter along Ghim Moh Rd.
	2024	25 August	Integrated with Service 92 and discontinued.

Service 93

Refer to Bus Service 93 for more information.

Service 93A (1971 - 1974)

Operator	Year	Date	Service changes
UBC	1971	25 April	Introduced between Jln Ang Teng Ter and Jln Bt Merah Ter.
	1974	3 February	Discontinued under 1974 Bus Rationalisation.

Service 94 (1971 - 1989)

Operator	Route	Year	Date	Service changes
STC	Jln Kolam Ayer ↔ Ulu Pandan (1971 - 1976)	1971	11 April	Introduced between Jln Kolam Ayer Ter and Ulu Pandan Ter under 1971 Bus Reorganisation.
			9 May	Amended to ply Tiong Bahru Rd and Tanglin Rd.
ABS			6 December	Operations transferred to ABS.
		1972	18 June	Amended to ply Bendemeer Rd towards Ulu Pandan Ter with the conversion of Serangoon Rd to one-way traffic.
		1974	8 December	Amended to ply the extended Robinson Rd, skipping Market St.
		1975	2 February	Amended to ply new slip road from Tiong Bahru Rd to Outram Rd with the conversion of Seng Poh Rd to one-way traffic.
		1976	15 February	Serves staggered bus stop between Bank of India and Hong Leong Holdings along Robinson Rd.
			TBC	Amended to ply Kallang Bahru, skipping Serangoon Rd/Bendemeer Rd.
	Sims Pl ↔ Ulu Pandan (1976 - 1977)		13 December	Extended to Sims Pl Ter.
	Sims Pl ↺ Shenton Way (1977 - 1989)	1977	17 October	Shortened to loop at Shenton Way from Sims Pl Ter with the introduction of Service 188.
		1979	11 February	Amended to ply the extended Shenton Way, Keppel Rd and Anson Rd, skipping Parsi Rd.
		1981	11 October	Serves new staggered bus stop outside Tunas Bldg along Anson Rd, skipping the bus stop outside Intl Plaza.
		1982	22 May	Amended to ply Aljunied Rd, MacPherson Rd, Bendemeer Rd and Geylang Bahru towards Shenton Way, skipping Jln Kolam Ayer and amended to ply Bendemeer Rd, Whampoa North, Serangoon Rd, MacPherson Rd and Aljunied Rd towards Sims Pl Ter.
		1988	3 January	Serves new staggered bus stop opposite Treasury Bldg along Shenton Way, skipping the bus stop opposite Marina Hse.
		1989	11 June	Discontinued.

Service 94 (since 1989) / Short Trip 94A

Refer to Bus Service 94 for more information.

Service 95

1st Generation (1971 - 1988)

Operator	Route	Year	Date	Service changes
United Bus Company	Paya Lebar Airport ↺ Havelock Rd	1971	22 April	Introduced between Paya Lebar Airport Ter and Havelock Rd (Loop).
		1972	11 June	Amended to ply the extended Upp Cross St with the partial conversion of Havelock Rd to one-way traffic, skipping New Bridge Rd.
		1973	11 March	Amended to ply Hoot Kiam Rd towards Jln Ang Teng Ter with the conversion of Irwell Bank Rd to one-way traffic.
			1 July	Operations transferred to Singapore Bus Services.
	Paya Lebar Airport ↔ Ulu Pandan	1974	3 February	Extended to Ulu Pandan Ter and amended to Lor 4 Toa Payoh, Toa Payoh Ctrl and Lor 2 Toa Payoh under 1974 Bus Rationalisation.
		1976	1 October	Amended to Jln Ang Teng Ter.
		1977	19 June	Amended to ply Paterson Rd, Orchard Blvd and Grange Rd towards Ulu Pandan Ter with the full conversion of Orchard Rd to one-way traffic.
		1980	20 January	Amended to ply Thomson Flyover towards Ulu Pandan Ter, skipping Thomson Rd and a portion of Whitley Rd.
	Paya Lebar Airport ↔ Clementi	1981	15 June	Extended to Clementi Int.
	Clementi ↺ Airport Rd		30 June	Amended to loop at Airport Rd with the closure of Jln Ang Teng Ter.
		1986	16 November	Serves new staggered bus stop outside Thong Teck Bldg along Scotts Rd, skipping the bus stop outside Metro Orchard.
		1988	8 March	Amended to ply Clementi Ave 3 with the abolition of right turning from Clementi Ave 3 to Commonwealth Ave West.
			13 March	Discontinued with the introduction of Service 105.

2nd Generation (Current)

Operator	Route	Year	Date	Service changes
(Current) Known as prior to 1 November 2001	Buona Vista ↺ Lower Kent Ridge Rd	1990	15 January	Introduced between Buona Vista Ter and Lower Kent Ridge Rd (Loop), operating on weekdays and Saturdays only.
		1993	23 May	Amended to ply Holland Dr, Holland Ave and Commonwealth Ave towards Lower Kent Ridge Rd.
		1996	TBC	Extended to operate on Sundays and Public Holidays.
	Buona Vista ↺ Kent Ridge	2001	23 July	Extended to loop at Kent Ridge Ter.
	95Buona Vista ↺ Kent Ridge 95ABuona Vista → Lower Kent Ridge Rd		TBC	95AIntroduced from Buona Vista Ter to Lower Kent Ridge Rd (NUH) during morning peak hours on weekdays.
	95Buona Vista ↺ Kent Ridge 95ABuona Vista → Lower Kent Ridge Rd 95BKent Ridge → North Buona Vista Rd	2004	TBC	95BIntroduced from Kent Ridge Ter to Nth Buona Vista Rd (Buona Vista Stn) during evening peak hours on weekdays.
	95Buona Vista ↺ Kent Ridge 95ABuona Vista → Lower Kent Ridge Rd 95BKent Ridge → North Buona Vista Rd 95CBuona Vista → Lower Kent Ridge Rd	2005	26 September	95CIntroduced from Buona Vista Ter to Lower Kent Ridge Rd (Kent Ridge Hall) during morning peak hours on weekdays.
	95Kent Ridge ↺ Holland Rd 95ANorth Buona Vista Rd → Lower Kent Ridge Rd 95BKent Ridge → North Buona Vista Rd 95CNorth Buona Vista Rd → Lower Kent Ridge Rd 95DKent Ridge → Holland Rd	2006	17 December	Amended to start from Kent Ridge Ter and loop at Holland Dr.
				95AShortened to start from Nth Buona Vista Rd (Opp Buona Vista Stn) with the route amendment of Service 95.
				95CShortened to start from Nth Buona Vista Rd (Opp Buona Vista Stn) with the route amendment of Service 95.
				95DIntroduced from Kent Ridge Ter to Holland Rd (Holland Village) during peak hours on weekdays and after the last bus of Service 95 daily.
		2010	18 October	Designated wheelchair-accessible bus service (WAB).
	95Kent Ridge ↺ Holland Rd 95ANorth Buona Vista Rd → Lower Kent Ridge Rd 95BKent Ridge → North Buona Vista Rd		TBC	95CDiscontinued.
				95DDiscontinued.
		2011	29 May	Serves new pair of bus stops outside Kent Ridge Stn along Lower Kent Ridge Rd.
	95Kent Ridge ↺ Holland Rd 95BKent Ridge → North Buona Vista Rd		TBC	95ADiscontinued.
		2013	13 October	Serves relocated bus stop opposite Blk 21 along Holland Dr with the abolition of the bus stop outside Blk 17 along Nth Buona Vista Rd.

Service 96 (Current)

Operator	Route	Year	Date	Service changes
Known as prior to 1 November 2001	Clementi ↺ Kent Ridge Cres	1982	16 August	Introduced between Clementi Int and Kent Ridge Cres (Loop), operating on Weekdays and Saturdays only.
		1986	1 June	Skips removed bus stop before Ayer Rajah Rd along Clementi Rd.
		1988	8 March	Amended to ply Clementi Ave 3 with the abolition of right turning from Clementi Ave 3 to Commonwealth Ave West.
		1990	2 July	Extended to operate on Sundays and Public Holidays.
		1996	TBC	First bus brought forward to 0700 hrs on Sundays and Public Holidays.
		1999	TBC	Last bus extended to 2300 hrs on Sundays and Public Holidays.
	96Clementi ↺ Kent Ridge Cres 96AClementi → Kent Ridge Cres	2000	TBC	96AIntroduced from Clementi Int to Kent Ridge Cres (NUS Raffles Hall) during morning peak hours on weekdays.
		2002	TBC	96First bus brought forward to 0645 hrs on weekdays.
		2006	29 October	Amended to Clementi Temp Int.
	96Clementi ↺ Kent Ridge Cres 96AClementi → Kent Ridge Cres 96BClementi → Kent Ridge Cres → Commonwealth Ave West	2007	TBC	96BIntroduced from Clementi Temp Int to Commonwealth Ave West (Clementi Stn) during evening peak hours on weekdays.
		2011	26 November	Amended to Clementi Integrated Transport Hub.
		2012	25 June	Designated wheelchair-accessible bus service (WAB).
(Current)		2016	26 June	Operations transferred to Tower Transit Singapore.
	96Clementi ↺ Kent Ridge Cres 96AClementi → Kent Ridge Cres 96BKent Ridge Cres → Commonwealth Ave West	2021	2 August	96BShortened to start from Kent Ridge Cres (NUS Fac of Design & Env).

Service 97 (Current)

Operator	Route	Year	Date	Service changes
Known as prior to 1 November 2001	Jurong East ↺ Connaught Dr	1983	29 August	Introduced between Jurong East Ter and Connaught Dr (Loop) as a peak hour service on weekdays and Saturdays.
	Jurong East ↔ Hougang South		18 December	Integrated with Service 86, extended to Hougang Int and converted to full day service.
		1985	30 June	Amended to Jurong East Int.
		1988	3 January	Serves new staggered bus stop opposite Treasury Bldg along Shenton Way, skipping the bus stop opposite Marina Hse.
			6 June	First bus from Hougang Int brought forward to 0545 hrs on Sundays and Public Holidays.
			18 December	Integrated with Service 79 and amended to ply AYE and Alexandra Rd, skipping Clementi Rd and Pasir Panjang Rd.
	Jurong East ↔ Hougang Ctrl	1994	18 December	Extended to Hougang Ctrl Int.
		1997	24 August	Amended to ply Hougang Ave 10 & Hougang Ctrl, skipping Hougang Ave 4.
		1998	24 May	Amended to Hougang Ctrl Temp Int.
		1999	TBC	Skips a pair of removed bus stops outside and opposite Wishart Rd along Telok Blangah Rd.
				Last bus from Jurong East Int extended to 2345 hrs daily.
				Serves additional bus stop outside Blk 512 along Hougang Ave 10.
	97Jurong East ↔ Hougang Ctrl 97AJurong East → Fullerton Rd	2000		97AIntroduced from Jurong East Int to Fullerton Rd (Fullerton Sq) during morning peak hours on weekdays.
		2001	20 May	Amended back to Hougang Ctrl Int.
		2002	TBC	Serves new pair of bus stops after Sommerville Rd and after Sunshine Lodge along Upp Serangoon Rd.
		2003	TBC	Serves new pair of bus stops outside Potong Pasir Stn along Upp Serangoon Rd.
	97Jurong East ↺ Temasek Ave 97AJurong East → Raffles Ave		27 July	Shortened to loop at Temasek Ave from Jurong East Int under North East Line Rationalisation Phase 2.
				97AExtended to terminate at Raffles Ave (Opp Marina Sq), operating after the last bus of Service 97 daily.
		2005	12 June	Serves new bus stop outside Science Pk along AYE.
	97Jurong East ↺ Temasek Ave 97AJurong East → Raffles Ave 97BJurong East → Telok Blangah Rd	2006	11 September	97BIntroduced from Jurong East Int to Telok Blangah Rd (HarbourFront Stn) during morning peak hours on weekdays.
			29 October	Serves new bus stop outside VivoCity along Telok Blangah Rd.
		2008	7 December	Skips removed bus stop opposite Temenggong D Mque along Telok Blangah Rd.
	Jurong East ↔ Marina Ctr	2010	26 April	Amended to Marina Ctr Ter, skipping Collyer Quay/Fullerton Rd and Esplanade Dr.
				97ADiscontinued. 97BDiscontinued.
		2011	17 December	Amended to Jurong East Temp Int.
		2012	25 June	Designated wheelchair-accessible bus service (WAB).
		2013	1 December	Serves new bus stop outside Downtown Stn along Central Blvd.
(Current)		2016	12 June	Operations transferred to Tower Transit Singapore.
		2020	6 December	Amended to relocated Jurong East Temp Int and amended to ply Jurong East St 12, skipping Jurong Gateway Rd, Jurong East Ctrl and Jurong Town Hall Rd.
		2021	27 February	Amended to the relocated Marina Ctr Ter.
		2024	28 January	Serves relocated bus stop after Clementi Swim Cplx along AYE.

Service 98 (Current)

Operator	Route	Year	Date	Service changes
Known as prior to 1 November 2001	Jurong ↺ Jurong East Ctrl	1984	1 January	Introduced between Jurong Int and Jurong East Ctrl (Loop).
	Jurong East ↺ Jurong	1985	30 June	Amended to start from Jurong East Int and loop at Jurong Int.
	Jurong East ↺ Corporation Rd	1990	1 July	Amended to loop at Jln Ahmad Ibrahim from Jurong East Int.
	Jurong East ↺ Jurong Pier Rd	1991	20 January	Integrated with Service 247, amended to ply Jurong West St 51 and Boon Lay Way and extended to loop at Jurong Pier Rd under TransitLink Network Integration Exercise Phase 2.
		1995	15 January	Alternate trips introduced during off peak hours daily, looping at Corporation Rd.
	98Jurong East ↺ Jurong Pier Rd 98AJurong East ↺ Corporation Rd	1999	TBC	Alternate trips during off peak hours re-numbered 98A.
	98Jurong East ↺ Jurong Pier Way 98AJurong East ↺ Corporation Rd	2003		Amended to loop at Jurong Pier Way from Jurong East Int.
		2004		Skips a pair of removed bus stops outside Jurong Power Stn and outside JPL Ind Pte Ltd along Jurong Pier Rd.
	Jurong East ↺ Jurong Pier Way	2008	28 January	98ARenumbered to 98M.
	98Jurong East ↺ Jurong Pier Way 98ABoon Lay Way → Corporation Rd	2011	3 May	98AIntroduced from Boon Lay Way (Lakeside Stn) to Corporation Rd (Corporation Pl) during evening peak hours on weekdays.
			17 December	Amended to Jurong East Temp Int.
	98Jurong East ↺ Jurong Pier Way 98ABoon Lay Way → Corporation Rd 98BBoon Lay Way → Jurong Pier Way	2012	16 April	98BIntroduced from Boon Lay Way (Lakeside Stn) to Jurong Pier Way (Jurong Island Checkpt) during morning peak hours on weekdays.
			25 June	Designated wheelchair-accessible bus service (WAB).
	98Jurong East ↺ Jurong Pier Way 98ABoon Lay Way → Corporation Rd 98BJurong West Ave 1 → Jurong Pier Way	2013	2 January	98BExtended to start from Jurong West Ave 1 (Blk 490).
(Current)		2016	26 June	Operations transferred to Tower Transit Singapore.
		2020	6 December	Amended to relocated Jurong East Temp Int and serve new bus stop before Jurong East Stn along Jurong Gateway Rd.

Service 98M (Current)

Operator	Route	Year	Date	Service changes
	Jurong East ↺ Corporation Rd	2008	28 January	Converted from Short Trip 98A as a service between Jurong East Int and Jln Ahmad Ibrahim (Loop) as an alternate route of Service 98 during off peak hours daily.
		2011	17 December	Amended to Jurong East Temp Int.
		2012	25 June	Designated wheelchair-accessible bus service (WAB).
(Current)		2016	26 June	Operations transferred to Tower Transit Singapore.
		2020	6 December	Amended to relocated Jurong East Temp Int and serve new bus stop before Jurong East Stn along Jurong Gateway Rd.

Service 99 (Current)

Operator	Route	Year	Date	Service changes
(Current) Known as prior to 1 November 2001	Jurong East ↺ Boon Lay Dr	1985	16 June	Introduced between Jurong East Ter and Boon Lay Dr (Loop).
			30 June	Amended to Jurong East Int.
	Clementi ↺ Jurong West St 91	1988	13 March	Extended to start from Clementi Int and extended to loop at Jurong West St 91.
			24 April	Serves new pair of bus stops before and after Upp Jurong Rd along Pioneer Rd Nth.
		1989	TBC	Amended to ply Boon Lay Ave (towards Jurong West St 91), skipping Boon Lay Dr, Boon Lay Way and Jln Boon Lay.
		1991	19 May	Amended to ply Jurong West Ave 5 and Jurong West St 72, skipping Pioneer Rd Nth.
		2003	TBC	Serves additional bus stop outside Blk 673C along Jurong West Ave 4.
		2006	29 October	Amended to Clementi Temp Int.
		2007	15 July	Serves new bus stop outside Blk 207 along Boon Lay Pl.
		2011	27 June	Designated wheelchair-accessible bus service (WAB).
			26 November	Amended to Clementi Integrated Transport Hub.
	Clementi ↔ Joo Koon	2015	21 November	Extended to Joo Koon Integrated Transport Hub, skipping Jurong West St 92.

Service 100 (April - May 1971)

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between Serangoon Gdn Ter and Prince Edward Ter under 1971 Bus Reorganisation.
		9 May	Integrated with Service 100A and re-numbered Service 100/100A.

Historical Information

Operator	Route	Year	Date	Service changes
(Current) Known as prior to 1 November 2001	Serangoon Garden ↔ Prince Edward	1974	3 February	Re-numbered from Service 100/100A as a service between Serangoon Gdn Ter and Prince Edward Ter under 1974 Bus Rationalisation.
			8 December	Amended to ply the extended Robinson Rd, skipping Market St.
		1975	2 March	Amended to ply Sims Ave towards Serangoon Gdn Ter with the conversion of Geylang Rd to one-way traffic.
			21 July	Amended to ply St. Andrew's Rd and Stamford Rd, skipping Coleman St and Hill St.
		1976	15 February	Serves new staggered bus stop between Bank of India and Hong Leong Holdings along Robinson Rd.
			14 March	Serves new staggered bus stop outside The Cenotaph along Connaught Dr, skipping the bus stop opposite Singapore Cricket Club.
			16 August	Amended to ply Aljunied Rd with the introduction of Service 60, skipping MacPherson Est in both directions.
		1977	31 October	Amended to skip Serangoon Gdn Est with the introduction of Service 217.
		1979	11 February	Amended to ply the extended Shenton Way, Palmer Rd and Anson Rd, skipping Parsi Rd.
	Serangoon Garden ↔ World Trade Ctr	1985	13 January	Extended to World Trade Ctr Ter.
		1988	3 January	Serves new staggered bus stop opposite Treasury Bldg along Shenton Way, skipping the bus stop opposite Marina Hse.
	Serangoon ↔ World Trade Ctr		13 March	Amended to Serangoon Int.
	Serangoon ↔ Ghim Moh	1989	5 November	Integrated with Service 20, extended to Ghim Moh Ter and amended to ply Beach Rd, skipping Nth Bridge Rd/Victoria St.
		1994	3 July	Amended to ply Crawford St towards Serangoon Int.
		1996	TBC	Serves additional bus stop outside Kallang Stn along Sims Ave.
		1999	TBC	Skips a pair of removed bus stops outside and opposite Wishart Rd along Telok Blangah Rd.
	100Serangoon ↔ Ghim Moh 100ASerangoon → Aljunied Rd	2000	TBC	100AIntroduced from Serangoon Int to Aljunied Rd (Aljunied Stn) during morning peak hours on weekdays.
		2002	TBC	Serves new pair of bus stops after Sommerville Rd and after Sunshine Lodge along Upp Serangoon Rd.
	100Serangoon ↔ Ghim Moh 100ASerangoon → Aljunied Rd 100BSerangoon → Aljunied Rd	2003	8 September	100BIntroduced as a short-trip service from Ghim Moh Ter to Telok Blangah Rd (HarbourFront Stn) during morning peak hours on weekdays.
		2006	29 October	Serves new bus stop outside VivoCity along Telok Blangah Rd.
		2007	28 April	Serves additional bus stop outside Victoria Concert Hall along Fullerton Rd.
		2008	7 December	Skips removed bus stop opposite Temenggong D Mque along Telok Blangah Rd.
	100Serangoon ↔ Ghim Moh 100ASerangoon → Aljunied Rd		TBC	100BDiscontinued.
		2011	3 September	Amended to Serangoon Integrated Transport Hub.
			26 September	Designated wheelchair-accessible bus service (WAB).
		2016	1 May	Amended to ply Esplanade Dr with the partial closure of Fullerton Rd.
		2017	12 March	Amended to ply Upp Serangoon Rd and the diverted Upp Aljunied Rd.
		2021	26 December	Amended to ply Esplanade Dr towards Ghim Moh Ter with the closure of Connaught Dr.
		2023	10 September	Extended to terminate at Ghim Moh Rd (Blk 7) towards Ghim Moh Ter.

Service 100/100A (1971 - 1974)

Operator	Year	Date	Service changes
STC	1971	9 May	Re-numbered from Service 100 as a service between Serangoon Gdn Ter and Prince Edward Ter.
ABS		6 December	Operations transferred to Associated Bus Service (ABS).
	1974	3 February	Re-numbered Service 100 under 1974 Bus Rationalisation.

Service 100A (April - May 1971)

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between Serangoon Gdn Ter and Finlayson Green (Loop) under 1971 Bus Reorganisation.
		9 May	Integrated with Service 100 and discontinued.