History of Services 100 - 109

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)

Bus Service 101

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)

Bus Service 102

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)

Bus Service 103

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)

Bus Service 103M

Service 104 (1971 - 1993)

Operator	Route	Year	Date	Service changes
United Bus Company	Serangoon Garden ↺ Upp Cross St	1971	23 April	Introduced between Serangoon Gdn Ter and Upp Cross St (Loop).
			5 July	Amended to ply Chartwell Dr, Burghley Dr, Berwick Dr and Serangoon Gdn Way towards Upp Cross St.
		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 Serangoon Gdn Ter with the conversion of Irwell Bank Rd to one-way traffic.
			1 July	Operations transferred to Singapore Bus Services.
		1977	31 October	Amended to skip Chartwell Dr, Burghley Dr and Berwick Dr with the introduction of Service 217.
		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.
		1986	28 September	Amended to ply Keng Lee Rd, Kg Java Rd and Bt Timah Rd, skipping Cavenagh Rd.
		1987	13 December	Serves new bus stop outside Newton Stn along Scotts Rd.
	Serangoon ↺ Upp Cross St	1988	13 March	Amended to Serangoon Int.
	Serangoon ↔ New Bridge Rd	1992	3 May	Extended to New Bridge Rd Ter and amended to ply Ang Mo Kio Ave 1 and Bishan Rd under TransitLink Network Integration Exercise Phase 7, skipping Lor Chuan.
		1993	5 December	Integrated with Service 134 to form Service 54 and discontinued under TransitLink Network Integration Exercise Phase 14.

Service 105

1st Generation (1974 - 1977)

Operator	Route	Year	Date	Service changes
	Serangoon Garden ↔ Prince Edward	1974	3 February	Re-numbered from Service 102A as a service between Serangoon Gdn Ter and Prince Edward Ter.
			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 (Current)

Bus Service 105

Service 106 (Current)

Bus Service 106

Service 107 (Current)

Bus Service 107

Service 107X/107M (Current)

Bus Service 107M

Service 109 (Current)

Bus Service 109

Service 110

1st Generation (1971 - 1977)

Operator	Route	Year	Date	Service changes
Singapore Traction Company	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.
			9 May	Amended to ply Mountbatten Rd, Kallang Rd, Crawford St, Nth Bridge Rd and Bras Basah Rd, skipping Nicoll Highway.
Associated Bus Services			6 December	Operations transferred to Associated Bus Services.
		1973	1 July	Operations transferred to Singapore Bus Services.
		1974	8 December	Amended to ply the extended Robinson Rd, skipping Market St.
		1975	2 March	Amended to ply Sims Ave and Lor 1 Geylang towards Upp Serangoon Rd 10.5 km 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.
		1977	16 May	Integrated with Service 70 and discontinued.

2nd Generation (Current)

Bus Service 110

Service 111 (Current)

Bus Service 111

Service 112

1st Generation (1971 - 1985)

Operator	Route	Year	Date	Service changes
Singapore Traction Company	Upp Serangoon Rd (10.5 km) ↔ Commonwealth Ave	1971	11 April	Introduced between Upp Serangoon Rd 10.5 km Ter and Commonwealth Ave 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 Commonwealth Ave Ter with the conversion of Serangoon Rd to one-way traffic.
		1973	11 March	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.
			1 July	Operations transferred to Singapore Bus Services.
		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	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		21 September	Extended to loop at Empress Pl.
	Buona Vista ↺ Empress Pl	1982	27 May	Amended to Buona Vista Ter.
		1984	10 June	Converted to peak hour service on weekdays and Saturdays.
		1985	24 November	Discontinued.

2nd Generation (Current)

Bus Service 112

Service 113 (Current)

Bus Service 113

Service 114 (Current)

Bus Service 114

Service 115 (Current)

Bus Service 115

Service 116

1st Generation (April - August 2006)

Operator	Route	Year	Date	Service changes
	Hougang Ctrl ↺ Buangkok View	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.

2nd Generation (Current)

Bus Service 116

Service 117/117M (Current)

Bus Service 117/117M

Service 118

1st Generation (1988 - 1990)

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

2nd Generation (Current)

Bus Service 118

Service 119 (Current)

Bus Service 119

Service 120

1st Generation (April - May 1971)

Operator	Route	Year	Date	Service changes
Singapore Traction Company	Jln Aman ↔ Prince Edward	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.

2nd Generation (1974 - 1989)

Operator	Route	Year	Date	Service changes
	St. Michael's ↔ Prince Edward	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 staggred 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	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.

3rd Generation (Current)

Bus Service 120

Service 120/120A (1971 - 1974)

Operator	Route	Year	Date	Service changes
Singapore Traction Company	Jln Aman ↔ Prince Edward	1971	9 May	Re-numbered from Service 120 between Jln Aman Ter and Prince Edward Ter.
Associated Bus Services			6 December	Operations transferred to Associated Bus Services.
		1973	1 July	Operations transferred to Singapore Bus Services.
		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	Route	Year	Date	Service changes
Singapore Traction Company	Jln Aman ↺ Stamford Rd	1971	11 April	Introduced between Jln Aman Ter and Stamford Rd (Loop).
			9 May	Integrated with Service 120 and discontinued.

Service 121

1st Generation (1971 - 1974)

Operator	Route	Year	Date	Service changes
Singapore Traction Company	Jln Aman ↔ Prince Edward	1971	11 April	Introduced between Jln Aman Ter and Prince Edward Ter under 1971 Bus Reorganisation.
Amalgamated Bus Company			6 December	Operations transferred to Amalgamated Bus Company.
		1973	1 July	Operations transferred to Singapore Bus Services.
		1974	3 February	Discontinued under 1974 Bus Rationalisation.

2nd Generation (Current)

Bus Service 121

Service 122

1st Generation (1971 - 1993)

Operator	Route	Year	Date	Service changes
Amalgamated Bus Company	Saint Michael's ↔ Commonwealth Ave	1971	11 April	Introduced between Jln Aman Ter and Commonwealth Ave Ter under 1971 Bus Reorganisation.
		1973	1 July	Operations transferred to Singapore Bus Services.
		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.
	Saint Michael's ↔ Buona Vista	1982	27 May	Amended to Buona Vista 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.
	Saint Michael's ↔ Bukit Batok	1985	6 January	Extended to Bt Batok Ter.
		1987	19 April	Serves new staggered bus stop under the PIE Flyover along Jln Anak Bt, skipping the bus stop opposite Bt Timah Plaza.
				Amended to use new access road from Upp Bt Timah Rd to Jln Anak Bt, skipping BKE.
			14 June	Amended to ply Victoria St, Kallang Rd and Lavender St, skipping Arab St, Rochor Canal Rd, Kitchener Rd and Tyrwhitt Rd.
			27 September	Amended to Bt Batok Int.
				Amended to ply Sth Bridge Rd and Eu Tong Sen St, skipping Upp Circular 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	10 June	Amended to ply Nth Boat Quay, skipping Sth Bridge Rd, Nth Canal Rd and Eu Tong Sen St.
	Saint Michael's ↔ Buona Vista	1991	28 April	Shortened to Buona Vista Ter under TransitLink Network Integration Exercise Phase 4.
		1993	4 April	Discontinued under TransitLink Network Integration Exercise Phase 12.

2nd Generation (Current)

Bus Service 122

Service 123 (Current)

Bus Service 123

Service 123M (Current)

Bus Service 123M

Service 124 (Current)

Bus Service 124

Service 125 (Current)

Bus Service 125

Service 126 (1971 - 1990)

Operator	Year	Date	Service changes
UBC	1971	25 October	Introduced between Jln Aman Ter and New Bridge Rd (Loop).
	1974	1 October	Serves merged bus stop outside Sri Srinivasa Perumal Tp along Serangoon Rd.
	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.
	1987	27 April	Converted to peak hour service on weekdays and Saturdays only.
		27 September	Amended to ply the extended Eu Tong Sen St towards St. Michael's Ter to facilitate the first stage of road expansion along New Bridge Rd.
		1 November	Amended to ply Eu Tong Sen St towards St. Michael's 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.
	1990	16 April	Discontinued.

Service 127 / Short-Trip 127A

Bus Service 127

Service 128 (2008 - 2020)

Bus Service 128

Service 129 / Short-Trip 129A / Short-Trip 129B

Bus Service 129

Service 150 (1971 - 1990)

Operator	Route	Year	Date	Service changes
UBC	Lor 1 Toa Payoh ↔ Crawford St (Apr - Aug 1971)	1971	11 April	Introduced between Lor 1 Toa Payoh Ter and Crawford St Ter under 1971 Bus Reorganisation.
	Toa Payoh ↔ Crawford St (Aug 1971 - 1990)		2 August	Amended to Toa Payoh Town Ctr Ter.
		1978	5 March	Amended to ply Keng Lee Rd with the partial conversion of Kg Java Rd to one-way traffic.
			3 December	Amended to ply Mayne Rd and Bt Timah Rd with the partial conversion of Mackenzie Rd to two-way traffic.
		1979	28 October	Amended to ply Sungei Rd (towards Crawford St Ter) and Weld Rd, Jln Besar and Bt Timah Rd (towards Toa Payoh Town Ctr Ter) with the partial conversion of Bt Timah Rd to two-way traffic and Rochor Canal Rd to one-way traffic, skipping Mackenzie Rd and Mayne Rd.
		1980	3 February	Integrated with Service 149 and amended to ply Jln Sultan, Beach Rd, Middle Rd and Selegie Rd towards Toa Payoh Town Ctr Ter, skipping Arab St, Rochor Canal Rd, Weld Rd, Jln Besar and Rochor Canal Rd.
		1983	26 December	Amended to Toa Payoh Int.
		1990	2 September	Integrated with Service 56 and discontinued.

Service 150 (since 2016)

Bus Service 150