History of Services 111 - 120

Service 111

Operator	Route	Year	Date	Service changes
STC	Upp Serangoon Rd (10.5 km) ↔ Commonwealth Ave (1971 - 1982)	1971	11 April	Introduced between Upp Serangoon Rd 10.5 km Ter and Commonwealth Ave Ter under 1971 Bus Reorganisation.
ABS			6 December	Operations transferred to ABS.
		1972	18 June	Amended to ply Bendemeer Rd towards Commonwealth Ave Ter with the conversion of Serangoon Rd to one-way traffic.
		1974	24 February	Amended to ply Grange Rd, Orchard Blvd and Paterson Rd towards Commonwealth Ave 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	17 May	Amended to ply Commonwealth Ave Extension and Nth Buona Vista Rd towards Commonwealth Ave Ter.
			19 June	Amended to ply Orchard Blvd and Grange Rd towards Commonwealth Ave Ter with the full conversion of Orchard Rd to one-way traffic.
			29 August	Amended to ply Holland Ave, Holland Dr and Nth Buona Vista Rd towards Commonwealth Ave Ter.
	Upp Serangoon Rd (10.5 km) ↔ Buona Vista (1982 - 1983)	1982	27 May	Amended to Buona Vista Ter.
	Hougang South ↔ Buona Vista (1983 - 1989)	1983	30 October	Amended to Hougang Int.
	Hougang South ↔ Ghim Moh (1989 - 1994)	1989	5 November	Extended to Ghim Moh Ter.
		1992	19 July	Amended to ply Orchard Lk due to the closure of Grange Rd to facilitate road expansion works.
	Hougang Ctrl ↔ Ghim Moh (1994 - 1998)	1994	18 December	Extended to Hougang Ctrl Int.
	Hougang Ctrl Temp Int ↔ Ghim Moh (1998 - 2001)	1998	24 May	Amended to Hougang Ctrl Temp Int.
		2000	4 June	Serves new pair of bus stops outside and opposite British High Comm along Tanglin Rd.
	Hougang Ctrl ↔ Ghim Moh (2001 - 2003)	2001	20 May	Amended back to Hougang Ctrl Int.
(Current)		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.
		2003	20 June	Serves new pair of bus stops outside Potong Pasir Stn along Upp Serangoon Rd.
	Ghim Moh ↺ Temasek Ave (since 2003)		27 July	Shortened to loop at Temasek Ave from Ghim Moh Ter under North East MRT Line Rationalisation Phase 2.
		2005	2 July	Amended to ply Grange Rd with the partial closure of Somerset Rd.
		2012	3 December	Designated wheelchair-accessible bus service (WAB).
		2014	27 April	Serves new bus stop outside Queens Condo along Commonwealth Ave.
		2023	10 September	Extended to terminate at Ghim Moh Rd (Blk 7) towards Ghim Moh Ter.

Service 112 (1971 - 1985)

Operator	Route	Year	Date	Service changes
STC	Upp Serangoon Rd (10.5 km) ↔ Commonwealth Ave (1971 - 1981)	1971	11 April	Introduced between Upp Serangoon Rd 10.5 km Ter and Commonwealth Ave Ter under 1971 Bus Reorganisation.
UBC			6 December	Operations transferred to UBC.
		1972	18 June	Amended to ply Bendemeer Rd towards Commonwealth Ave Ter with the conversion of Serangoon Rd to one-way traffic.
		1973	2 February	Amended to ply Zion Rd and Hoot Kiam Rd towards Commonwealth Ave Ter with the partial conversion of Kim Seng Rd and Irwell Bank Rd to one-way traffic.
		1974	1 October	Serves merged bus stop outside Sri Srinivasa Perumal Tp along Serangoon Rd.
		1975	2 February	Amended to ply Tiong Bahru Rd and the extended Zion Rd towards Commonwealth Ave Ter with the partial conversion of Kim Seng Rd and Outram Rd to one-way traffic.
			2 November	Amended to temporary bus terminal along Holland Dr with the partial closure of Commonwealth Ave Ter to facilitate the extension of Commonwealth Ave.
		1977	29 August	Amended back to Commonwealth Ave Ter via Nth Buona Vista Rd.
		1979	11 February	Amended to ply the extended Shenton Way towards Commonwealth Ave Ter, skipping Parsi Rd and Anson Rd.
		1980	20 January	Amended to ply Spottiswoode Pk Rd with the partial conversion of Cantonment Rd to one-way traffic.
	Commonwealth Ave ↺ Finlayson Green (Jan - Sep 1981)	1981	11 January	Shortened to loop at Finlayson Green from Commonwealth Ave Ter and amended to ply Cecil St and Shenton Way.
	Commonwealth Ave ↺ Empress Pl (Sep 1981 - 1982)		21 September	Extended to loop at Empress Pl.
	Buona Vista ↺ Empress Pl (1982 - 1985)	1982	27 May	Amended to Buona Vista Ter.
		1984	10 June	Converted to peak hour service on weekdays and Saturdays.
		1985	24 November	Discontinued.

Service 112 (since 2004)

Operator	Route	Year	Date	Service changes
(Current)	Hougang Ctrl ↺ Hougang St 92 (since 2004)	2004	15 February	Introduced between Hougang Ctrl Int and Hougang St 92 (Loop) with the integration of Services 322 and 327.
		2013	9 June	Designated wheelchair-accessible bus service (WAB).

Short Trip 112A

Operator	Route	Year	Date	Service changes
(Current)	Hougang Central → Upp Serangoon Rd (since 2004)	2004	15 February	Introduced from Hougang Ctrl Int to Upp Serangoon Rd (Kovan Stn), operating after the last bus of Service 112 daily.
		2013	9 June	Designated wheelchair-accessible bus service (WAB).

Service 113

Operator	Route	Year	Date	Service changes
(Current)	Hougang Ctrl ↺ Upp Paya Lebar Rd (since 2004)	2004	15 February	Introduced between Hougang Ctrl Int and Upp Paya Lebar Rd (Loop) with the integration of Services 321 and 326.
		2010	28 February	Designated wheelchair-accessible bus service (WAB).

Short Trip 113A

Operator	Route	Year	Date	Service changes
(Current)	Upp Paya Lebar Rd → Upp Serangoon Rd (AM) Upp Serangoon Rd → Upp Paya Lebar Rd (PM) (2005 - 2018)	2005	27 June	Introduced from Upp Paya Lebar Rd (Blk 161) to Upp Serangoon Rd (Kovan Stn) during morning peak hours and between Upp Serangoon Rd (Kovan Stn) and Upp Paya Lebar Rd (Loop) during evening peak hours on weekdays.
		2010	28 February	Designated wheelchair-accessible bus service (WAB).
	Upp Serangoon Rd → Upp Paya Lebar Rd → Upp Serangoon Rd (AM) Upp Serangoon Rd → Upp Paya Lebar Rd (PM) (since 2018)	2018	13 August	Morning peak route extended to start from Upp Serangoon Rd (Kovan Stn Exit C).

Service 114

Operator	Route	Year	Date	Service changes
(Current)	Buangkok Stn ↺ Buangkok Cres (2020-2024)	2020	25 October	Introduced between Sengkang Ctrl (Buangkok Stn Exit B) and Buangkok Cres (Loop), operating between 0600 hrs and 0035 hrs daily. Wheelchair-accessible at launch.
		2022	13 March	Serves new bus stop opposite Blk 991A along Buangkok Cres.
	Buangkok Int ↺ Buangkok Cres (since 2024)	2024	TBC	To be amended to Buangkok Int.

Short Trip 114A

Operator	Route	Year	Date	Service changes
(Current)	Buangkok Stn → Buangkok Cres (since 2021)	2021	31 December	Introduced from Sengkang Ctrl (Buangkok Stn Exit B) to Buangkok Cres (Blk 998B), operating after the last bus of Service 114 on eves of major public holidays. Wheelchair-accessible at launch.
		2022	13 March	Serves new bus stop opposite Blk 991A along Buangkok Cres.

Service 115

Operator	Route	Year	Date	Service changes
(Current)	Hougang St 21 ↺ Hougang Ave 3 (since 2004)	2004	30 October	Introduced between Hougang St 21 (Hougang St 21 FC) and Hougang Ave 3 (Loop), operating between 0715 hrs and 1815 hrs daily.
		2014	3 December	Designated wheelchair-accessible bus service (WAB).
		2021	3 May	Last bus extended to 2000 hrs daily.

Service 116 (April - August 2006)

Operator	Year	Date	Service changes
	2006	3 April	Introduced between Hougang Ctrl Int and Buangkok View (Buangkok Green Med Pk) (Loop) for a trial period of 3 months, operating between 0630 hrs and 1730 hrs daily.
		10 July	Revised to operate on weekdays only.
		15 August	Discontinued.

Service 116 (since 2012)

Operator	Route	Year	Date	Service changes
(Current)	Hougang Ctrl ↺ Serangoon Ctrl (since 2012)	2012	18 November	Introduced between Hougang Ctrl Int and Serangoon Ctrl (Loop) under the LTA's Bus Service Enhancement Programme (BSEP), operating between 0545 hrs and 2330 hrs daily.
		2013	31 March	Designated wheelchair-accessible bus service (WAB).

Short Trip 116A

Operator	Route	Year	Date	Service changes
(Current)	Serangoon North Ave 4 → Serangoon Central (since 2019)	2019	15 April	Introduced from Serangoon Nth Ave 4 (Blk 504A CP) to Serangoon Ctrl (Serangoon Stn Exit C/Blk 201) during morning peak hours on weekdays. Wheelchair-accessible at launch.

Service 117

Operator	Route	Year	Date	Service changes
(Current)	Punggol ↔ Sembawang (since 2015)	2015	20 December	Introduced between Punggol Temp Int and Sembawang Int under the LTA's Bus Service Enhancement Programme (BSEP), operating between 0545 hrs and 2330 hrs daily from Punggol Temp Int and Sembawang Int. Wheelchair-accessible at launch.
		2016	24 April	Amended to ply West Camp Rd.
		2017	26 November	Serves additional bus stop outside Punggol Stn/Int along Punggol Ctrl.
		2018	27 May	Serves new pair of bus stops outside and opposite The Visionaire along Canberra Lk.
			25 November	Serves 3 new bus stops before and opposite Blk 469B and opposite Yishun St 43 along Yishun Ave 1.
		2019	2 November	Serves new pair of bus stops outside and opposite Canberra Stn along Canberra Lk.
		2020	12 January	Serves a new bus stop outside Blk 469B along Yishun Ave 1.
		2021	28 November	Amended to ply Sembawang Rd, Canberra St, Canberra Wk and Canberra Cres, skipping a portion of Canberra Lk.
				First bus brought forward to 0530 hrs from Punggol Temp Int and Sembawang Int on Weekends and Public Holidays.
		2022	26 June	Serves new bus stop outside Blk 471A along Yishun Ave 1.
			31 July	Amended to ply Punggol Field, skipping Punggol Ctrl and a portion of Punggol Way.
		2024	13 October	Serves new bus stop opposite Blk 470A along Yishun Ave 1.

Short Trip 117A

Operator	Route	Year	Date	Service changes
(Current)	Yishun Ave 1 → Yishun Ave 2 (since 2019)	2019	14 January	Introduced from Yishun Ave 1 (Opp Blk 430B) to Yishun Ave 2 (Bef Khatib Stn) during morning peak hours on weekdays. Wheelchair-accessible at launch.
		2023	27 November	Extended to start from Yishun Ave 1 (Opp Blks 469A/469B).

Short Trip 117B (2019 - 2020)

Operator	Year	Date	Service changes
	2019	11 March	Introduced from Sembawang Int to Yishun Ave 2 (Opp Yishun Stn) during morning peak hours on weekdays. Wheelchair-accessible at launch.
		2 November	Serves new bus stop opposite Canberra Stn along Canberra Lk.
	2020	30 March	Discontinued.

Service 117M

Operator	Route	Year	Date	Service changes
(Current)	Punggol ↔ Sembawang (since 2021)	2021	29 November	Introduced as a supplementary service between Punggol Temp Int and Sembawang Int during weekday morning and evening peak hours, plying an extended route of Service 117 via Seletar Aerospace Lk and Seletar Aerospace Cres. Wheelchair-accessible at launch.
				First bus brought forward to 0530 hrs from Punggol Temp Int and Sembawang Int on weekdays.
		2022	26 June	Serves new bus stop outside Blk 471A along Yishun Ave 1.
			31 July	Amended to ply Punggol Field, skipping Punggol Ctrl and a portion of Punggol Way.
		2024	13 October	Serves new bus stop opposite Blk 470A along Yishun Ave 1.

Service 118 (1988 - 1990)

Operator	Year	Date	Service changes
	1988	24 January	Introduced between Hougang Int and Tomlinson Rd (Loop).
	1990	16 December	Integrated with Service 111 and discontinued.

Service 118 (since 2015)

Operator	Route	Year	Date	Service changes
	Punggol ↔ Changi Business Pk (since 2015)	2015	20 December	Introduced between Punggol Temp Int and Changi Business Pk Ter under the LTA's Bus Service Enhancement Programme (BSEP), operating between 0545 hrs and 2330 hrs daily from Punggol Temp Int and Changi Business Pk Ter. Wheelchair-accessible at launch.
(Current)		2016	4 September	Operations transferred to Go-Ahead Singapore.
			23 October	Serves new pair of bus stops outside UWCSEA and outside Blk 871C along Tampines Ave 5.
		2017	21 October	Amended to ply Changi Sth Ave 1 and Changi Business Pk Ave 1, skipping Changi Sth Ave 2.
			26 November	Serves additional bus stop outside Punggol Stn/Int along Punggol Ctrl.

Short Trip 118A

Operator	Route	Year	Date	Service changes
(Current)	TPE → Simei Ave (2017 - 2023)	2017	10 April	Introduced from TPE (Aft Punggol Rd) to Simei Ave (ITE Coll East Adm Blk) during morning peak hours on weekdays. Wheelchair-accessible at launch.
	Punggol → Simei Ave (since 2023)	2023	30 October	Extended to start from Punggol Temp Int.

Short Trip 118B

Operator	Route	Year	Date	Service changes
(Current)	Simei Ave → TPE (since 2017)	2017	10 April	Introduced from Simei Ave (Opp ITE Coll East Adm Blk) to TPE (Bef Punggol Rd) during evening peak hours on weekdays. Wheelchair-accessible at launch.

Service 119

Operator	Route	Year	Date	Service changes
	Sengkang ↺ Hougang St 21 (2003 - 2012)	2003	14 September	Introduced between Sengkang Int and Hougang St 21 (Loop).
		2004	15 February	Serves 2 new bus stops outside Hougang St 21 FC and between Blks 210/211 along Hougang St 21.
	Punggol ↺ Hougang St 21 (since 2012)	2012	21 October	Extended to Punggol Temp Int under the LTA's Bus Service Enhancement Programme (BSEP).
		2013	31 March	Designated wheelchair-accessible bus service (WAB).
		2014	13 January	First bus brought forward to 0500 hrs on weekdays.
		2015	30 August	Serves new pair of bus stops outside Twin Waterfalls and after TPE along Punggol Way.
(Current)		2016	4 September	Operations transferred to Go-Ahead Singapore.
				First bus brought forward to 0505 hrs on Saturdays and 0550 hrs on Sundays & Public Holidays.
			13 November	Serves new pair of bus stops opposite Blk 293D and outside Blk 286B along Sengkang East Rd.

Service 120 (April - May 1971)

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between Jln Aman Ter and Prince Edward Ter under 1971 Bus Reorganisation.
		9 May	Integrated with Service 120A, amended to ply Stamford Rd, Waterloo St and Bras Basah Rd and re-numbered Service 120/120A.

Service 120 (1974 - 1989)

Operator	Route	Year	Date	Service changes
	St. Michael's ↔ Prince Edward (1974 - 1981)	1974	3 February	Re-numbered from Service 120/120A as a service between Jln Aman Ter and Prince Edward Ter under 1974 Bus Rationalisation.
			8 December	Amended to ply Cecil St, skipping Robinson Rd.
		1976	14 March	Serves new staggered bus stop outside The Cenotaph along Connaught Dr, skipping the bus stop opposite Singapore Cricket Club.
		1979	11 February	Amended to ply the extended Shenton Way, Palmer Rd and Anson Rd, skipping Parsi Rd.
	St. Michael's ↺ Beach Rd (1981 - 1989)	1981	23 August	Shortened to loop at Beach Rd from Jln Aman Ter.
		1983	2 January	Amended to Whampoa Rd Ter and amended to ply Whampoa Rd, Whampoa Dr, Jln Bahagia and Kim Keat Rd when exiting St. Michael's Est.
				Amended to ply Whampoa Dr when entering St. Michael's Est, skipping Moulmein Green and Jln Kebun Limau.
		1989	TBC	Discontinued.

Service 120 (since 2013)

Operator	Route	Year	Date	Service changes
(Current)	New Bridge Rd ↺ Telok Blangah Hts (2013 - 2018)	2013	21 April	Introduced between New Bridge Rd Ter and Telok Blangah Hts (Loop) under the LTA's Bus Service Enhancement Programme (BSEP), operating between 0600 hrs and 2330 hrs daily.
			9 June	Designated wheelchair-accessible bus service (WAB).
		2017	26 November	Skips removed bus stop before Hosp Dr along Kg Bahru Rd.
			10 December	Serves new bus stop opposite Blk 91A along Telok Blangah St 31.
	Kampong Bahru ↺ Telok Blangah Hts (since 2018)	2018	10 March	Shortened to Kg Bahru Ter with the closure of New Bridge Rd Ter.
				First bus brought forward to 0555 hrs daily.
		2024	15 September	Serves new bus stop along Alexandra Rd opposite Cycle & Carriage.

Service 120/120A (1971 - 1974)

Operator	Year	Date	Service changes
STC	1971	9 May	Re-numbered from Service 120 between Jln Aman Ter and Prince Edward Ter.
ABS		6 December	Operations transferred to ABS.
	1974	3 February	Amended to skip Stamford Rd, Waterloo St and Bras Basah Rd and re-numbered Service 120 under 1974 Bus Rationalisation.

Service 120A (April - May 1971)

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between Jln Aman Ter and Stamford Rd (Loop).
		9 May	Integrated with Service 120 and discontinued.