History of Services 101 - 150

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Service 101

1st Generation (1971 - 1990)

Operator	Route	Year	Date	Service changes
Singapore Traction Company	Serangoon Garden ↔ New Bridge Rd	1971	11 April	Introduced between Serangoon Gdn Ter and New Bridge Rd Ter under 1971 Bus Reorganisation.
Associated Bus Services			6 December	Operations transferred to Associated Bus Services.
		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 new merged bus stop outside Sri Srinivasa Perumal Tp along Serangoon Rd.
		1977	31 October	Amended to skip Chartwell Dr, Burghley Dr and Berwick Dr with the introduction of Service 217.
		1981	10 May	Skips bus stop before Braddell Flyover along Lor Chuan.
		1983	6 February	Amended to ply CTE towards Serangoon Gdn Ter with the closure of temporary slip road between Braddell Rd and Lor Chuan.
			20 June	Amended back to ply Lor Chuan towards Serangoon Gdn Ter with the opening of new link road between Braddell Rd and Lor Chuan under Braddell Flyover.
		1987	3 May	Amended to terminate at New Bridge Rd Ter.
			6 June	Amended to the relocated New Bridge Rd Ter.
			27 September	Amended to ply the extended Eu Tong Sen St towards Serangoon Gdn Ter to facilitate the first stage of road expansion along New Bridge Rd.
			1 November	Amended to ply Eu Tong Sen St towards Serangoon Gdn Ter to facilitate the second stage of road expansion along New Bridge Rd.
	Serangoon ↔ New Bridge Rd	1988	13 March	Amended to Serangoon Int.
			20 March	Amended to ply Upp Cross St and New Bridge Rd, skipping Neil Rd.
		1990	2 September	Integrated with Service 83 and discontinued.

2nd Generation (Current)

Operator	Route	Year	Date	Service changes
(Current)	Serangoon ↺ Buangkok Cres	2004	15 February	Introduced between Serangoon Int and Buangkok Cres (Loop), replacing Service 328.
	Serangoon ↺ Buangkok Lk	2005	14 August	Amended to loop at Buangkok Lk, skipping Buangkok Cres.
		2009	19 April	Serves new pair of bus stops outside Blk 834 and outside Hougang Polyclinic along Hougang Ave 4.
		2011	3 September	Amended to Serangoon Integrated Transport Hub.
			3 December	Designated wheelchair-accessible bus service (WAB).
		2017	9 July	Serves new pair of bus stops outside and opposite Blk 991B along Buangkok Lk.
		2018	23 December	Serves new bus stop opposite Blk 984A along Buangkok Lk.
	Serangoon ↺ Buangkok Cres	2019	25 August	Amended to loop at Buangkok Cres after Buangkok Lk.
		2022	13 March	Serves new bus stop outside Blk 991A along Buangkok Cres.

Service 101A (1971 - 1974)

Operator	Route	Year	Date	Service changes
Singapore Traction Company	Serangoon Garden ↔ New Bridge Rd	1971	11 April	Introduced between Serangoon Gdn Ter and New Bridge Rd Ter under 1971 Bus Reorganisation.
Associated Bus Services			6 December	Operations transferred to Associated Bus Services.
		1972	18 June	Amended to ply Bendemeer Rd towards New Bridge Rd 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 102

1st Generation (1971 - 1977)

Operator	Route	Year	Date	Service changes
Singapore Traction Company	Serangoon Garden ↔ Prince Edward	1971	11 April	Introduced between Serangoon Gdn Ter and Prince Edward Ter under 1971 Bus Reorganisation.
United Bus Company			6 December	Operations transferred to United Bus Company.
		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	3 February	Converted to semi-express service under 1974 Bus Rationalisation.
			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.
		1977	31 October	Discontinued.

2nd Generation (1981 - 1983)

Operator	Route	Year	Date	Service changes
	Jln Kayu ↔ New Bridge Rd	1981	2 March	Introduced between Jln Kayu Ter and New Bridge Rd Ter, operating on weekdays and Saturdays only.
		1983	14 November	Discontinued.

3rd Generation (Current)

Operator	Route	Year	Date	Service changes
(Current)	Hougang Central ↺ Jln Kayu	2015	20 September	Introduced between Hougang Ctrl Int and Jln Kayu (Loop) under the LTA's Bus Service Enhancement Programme (BSEP), operating between 0545 hrs and 2330 hrs daily. Wheelchair-accessible bus service (WAB) at launch.
	Hougang Central ↺ Seletar Aerospace Ave	2018	14 October	Extended to loop at Seletar Airport PTB.
		2019	22 September	Serves new pair of bus stops opposite and after Seletar Camp along Seletar Aerospace Dr.
		2022	29 May	Amended to ply Fernvale Rd, Sengkang West Ave, Sengkang West Rd and Sengkang West Way, skipping a portion of Sengkang West Way.
				First bus brought forward to 0530 hrs daily.
	102Hougang Central ↺ Seletar Aerospace Ave 102ASengkang East Way → Sengkang West Way	2023	27 March	102AIntroduced as a short-trip service from Sengkang East Way (Sengkang Stn) to Sengkang West Way (Opp Blk 461B) during evening peak hours on weekdays. Wheelchair-accessible bus service (WAB) at launch.
	102Hougang Central ↺ Seletar Aerospace Ave 102ASengkang East Way → Sengkang West Way 102BSengkang West Way → Sengkang East Way		9 October	102BIntroduced as a short-trip service from Sengkang West Way (Blk 461B) to Sengkang East Way (Opp Sengkang Stn/Blk 260A) during morning peak hours on weekdays. Wheelchair-accessible bus service (WAB) at launch.

Service 102A (1971 - 1974)

Operator	Route	Year	Date	Service changes
Singapore Traction Company	Serangoon Garden ↔ Prince Edward	1971	11 April	Introduced between Serangoon Gdn Ter and Prince Edward Ter under 1971 Bus Reorganisation.
United Bus Company			6 December	Operations transferred to United Bus Company.
		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	3 February	Re-numbered Service 105 under 1974 Bus Rationalisation.

Service 103 (Current)

Operator	Route	Year	Date	Service changes
Associated Bus Services	Serangoon Garden ↔ Commonwealth Ave	1971	11 April	Introduced between Serangoon Gdn Ter and Commonwealth Ave Ter under 1971 Bus Reorganisation.
		1972	18 June	Amended to ply Bendemeer Rd towards Commonwealth Ave Ter with the conversion of Serangoon Rd to one-way traffic.
		1973	1 July	Operations transferred to Singapore Bus Services.
	Jln Kayu ↔ Commonwealth Ave	1974	3 February	Extended to Jln Kayu Ter under 1974 Bus Rationalisation.
			1 October	Serves new merged bus stop outside Sri Srinivasa Perumal Tp along Serangoon 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 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.
		1980	13 July	Amended to ply Commonwealth Ave with the conversion of Queens Circus to a signalised junction, skipping Queensway and Holland Rd.
	Jln Kayu ↔ Buona Vista	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 Jln Kayu 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.
		1989	29 January	Serves relocated bus stop opposite Sri Mariamman Tp along Sth Bridge Rd, skipping a removed bus stop opposite Jamae Mque.
	Jln Kayu ↔ New Bridge Rd	1992	29 March	Shortened to New Bridge Rd Ter under TransitLink Network Integration Exercise Phase 6.
		1995	17 December	Operations transferred to Trans Island Bus Services.
		1998	TBC	Skips a pair of temporarily closed bus stops before and after Seletar West Farmway 1 along Jln Kayu.
		1999	10 July	Skips the bus stop outside Plaza By The Pk along Bras Basah Rd.
(Current) Known as prior to 1 November 2001			26 December	Operations transferred to Singapore Bus Services.
		2001	15 July	Amended to ply Yio Chu Kang Lk and Boundary Rd.
		2002	TBC	Serves new pair of bus stops after Sommerville Rd and after Sunshine Lodge along Upp Serangoon Rd.
			31 December	Serves reinstated pair of bus stops before and after Sengkang West Ave along Jln Kayu.
		2003	TBC	Serves new pair of bus stops outside Potong Pasir Stn along Upp Serangoon Rd.
	Serangoon ↺ Piccadilly		7 December	Shortened to start from Serangoon Int and loop at Piccadilly, and integrated with Service 378 under North East Line Rationalisation Phase 3.
		2007	1 July	Skips removed bus stop after East Camp Gate along Piccadilly.
	Serangoon ↺ West Camp Rd	2011	13 February	Integrated with Service 103M and extended to loop at West Camp Rd.
			3 September	Amended to Serangoon Integrated Transport Hub.
		2012	2 February	Serves new pair of bus stops before and after Rolls Royce Pte Ltd along Seletar Aerospace Dr.
		2013	13 October	Amended to ply Sengkang West Ave and Sengkang West Rd with the partial closure of Jln Kayu.
		2014	3 December	Designated wheelchair-accessible bus service (WAB).
	Serangoon ↔ Yishun	2015	14 June	Extended to Yishun Temp Int under the LTA's Bus Service Enhancement Programme (BSEP).
		2018	25 November	Serves 3 new bus stops before and opposite Blk 469B and opposite Yishun St 43 along Yishun Ave 1.
		2019	8 September	Amended to Yishun Integrated Transport Hub.
		2020	12 January	Serves new bus stop outside Blk 469B along Yishun Ave 1.
		2022	26 June	Serves new bus stop outside Blk 471A along Yishun Ave 1.
		2024	13 October	Serves new bus stop opposite Blk 470A along Yishun Ave 1.

Service 103A (1971 - 1974)

Operator	Route	Year	Date	Service changes
Associated Bus Services	Serangoon Garden ↔ Commonwealth Ave	1971	11 April	Introduced between Serangoon Gdn Ter and Commonwealth Ave Ter under 1971 Bus Reorganisation.
		1972	18 June	Amended to ply Bendemeer Rd towards Commonwealth Ave Ter with the conversion of Serangoon Rd to one-way traffic.
		1973	1 July	Operations transferred to Singapore Bus Services.
		1974	3 February	Re-numbered Service 106 under 1974 Bus Rationalisation.

Service 103W/103M (2003 - 2011)

Operator	Route	Year	Date	Service changes
	103WSerangoon ↺ West Camp Rd	2003	7 December	Introduced between Serangoon Int and West Camp Rd (Loop) as Service 103W, replacing Service 379 under North East Line Rationalisation Phase 3.
	103MSerangoon ↺ West Camp Rd	2008	28 January	Re-numbered Service 103M.
		2011	13 February	Integrated with Service 103 and discontinued with the partial closure of West Camp Rd and New West Camp Rd.