History of Services 121 - 130

Service 121 (1971 - 1974)

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between Jln Aman Ter and Prince Edward Ter under 1971 Bus Reorganisation.
ABC		6 December	Operations transferred to ABC.
	1974	3 February	Discontinued under 1974 Bus Rationalisation.

Service 121 (since 2014)

Refer to Bus Service 121 for more information.

Service 122 (1971 - 1993)

Operator	Route	Year	Date	Service changes
ABC	St. Michael's ↔ Commonwealth Ave (1971 - 1982)	1971	11 April	Introduced between Jln Aman Ter and Commonwealth Ave Ter under 1971 Bus Reorganisation.
		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.
	St. Michael's ↔ Buona Vista (1982 - 1985)	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.
	St. Michael's ↔ Bukit Batok (1985 - 1991)	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.
	St. Michael's ↔ Buona Vista (1991 - 1993)	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.

Service 122 (since 2015)

Operator	Route	Year	Date	Service changes
(Current)	New Bridge Rd ↺ Commonwealth Dr (2015 - 2018)	2015	15 March	Introduced between New Bridge Rd Ter and Commonwealth Dr (Loop) under the LTA's Bus Service Enhancement Programme (BSEP), operating between 0600 hrs and 2330 hrs daily.
			22 June	Designated wheelchair-accessible bus service (WAB).
	Kampong Bahru ↺ Commonwealth Dr (since 2018)	2018	10 March	Extended to Kg Bahru Ter with the closure of New Bridge Rd Ter.
				First bus brought forward to 0555 hrs daily.
		2021	22 August	Serves merged bus stop outside Blk 30 along Margaret Dr, skipping the bus stop opposite Queenstown Lib and outside The Fisherman Ch.

Service 123 / Short Trip 123A (2005 - 2014) / Short Trip 123B (2005 - 2008)

Refer to Bus Service 123 for more information.

Service 123M

Refer to Bus Service 123M for more information.

Service 124

Operator	Route	Year	Date	Service changes
STC	St. Michael's ↔ Kg Bahru Rd (1971 - 1976)	1971	11 April	Introduced between Jln Aman Ter and Kg Bahru Rd Ter under 1971 Bus Reorganisation.
ABC			6 December	Operations transferred to ABC.
		1974	24 February	Amended to ply Grange Rd, Orchard Blvd and Paterson Rd towards Jln Aman Ter with the conversion of Orchard Rd to one-way traffic.
	St. Michael's ↺ Telok Blangah Rise (1976 - 1993)	1976	18 July	Extended to loop at Telok Blangah Rise 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.
		1984	27 May	Amended to ply Whampoa Dr when entering St. Michael's Est with the closure of Jln Kebun Limau to facilitate the construction of the Central Expressway (CTE).
		1986	16 November	Serves new staggered bus stop outside Thong Teck Bldg along Scotts Rd, skipping the bus stop outside Metro Orchard.
		1987	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.
			13 December	Serves new staggered bus stop outside Orchard Stn along Orchard Blvd, skipping the bus stop opposite Orchard Stn.
		1988	20 March	Amended to ply Upp Cross St and New Bridge Rd, skipping Neil Rd.
		1992	19 July	Amended to ply Orchard Lk due to the closure of Grange Rd to facilitate road expansion works.
	St. Michael's ↔ Bukit Merah (1993 - 2003)	1993	4 April	Amended to ply Balestier Rd, Moulmein Rd, Newton Rd and Scotts Rd and extended to Bt Merah Int under TransitLink Network Integration Exercise Phase 12.
		1994	TBC	Serves additional bus stop outside Balestier Twrs along Balestier Rd.
		1995	7 May	Amended to ply Orchard Turn.
		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 Chinatown MRT station on the North East MRT Line.
(Current)		2002	20 April	Amended to ply Upp Cross St and the reinstated New Bridge Rd, skipping Sth Bridge Rd, Neil Rd and Cantonment Rd.
			7 July	Skips the bus stop outside Orchard Emerald along Orchard Rd.
	St. Michael's ↺ Telok Blangah Dr (2003 - 2013)	2003	23 November	Amended to loop at Telok Blangah Dr from St. Michael's Ter.
		2005	2 July	Amended to ply Grange Rd and Orchard Lk with the partial closure of Somerset Rd.
			9 October	Serves additional bus stop outside Clarke Quay Stn along Eu Tong Sen St.
		2006	29 October	Serves relocated bus stop outside Orchard Stn along Orchard Turn.
		2012	25 June	Designated wheelchair-accessible bus service (WAB).
	St. Michael's ↔ HarbourFront (since 2013)	2013	21 April	Extended to HarbourFront Int and amended to ply Telok Blangah Hts, Telok Blangah St 31 and Telok Blangah Dr, skipping Telok Blangah St 32.
			29 December	Serves new bus stop outside Outram Pk Stn along New Bridge Rd.
		2017	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.
			10 December	Serves new pair of bus stops outside Blk 92B and opposite Blk 91A along Telok Blangah St 31.
		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.

Short Trip 124A (2003 - 2013)

Operator	Year	Date	Service changes
	2003	23 November	Introduced from St. Michael's Ter to Telok Blangah Dr (Blk 50), operating after the last bus of Service 124 daily.
	2012	25 June	Designated wheelchair-accessible bus service (WAB).
	2013	21 April	Discontinued with the route extension of Service 124 to HarbourFront Int.

Service 125

Operator	Route	Year	Date	Service changes
STC	St. Michael's ↔ Labrador (April - May 1971)	1971	11 April	Introduced between Jln Aman Ter and Labrador Ter under 1971 Bus Reorganisation.
	St. Michael's ↔ Delta Circus (May 1971 - 1974)		2 May	Extended to Delta Circus Ter.
UBC			6 December	Operations transferred to UBC.
	St. Michael's ↔ Jln Bt Merah (1974 - 1975)	1974	3 February	Amended to Jln Bt Merah Ter under 1974 Bus Rationalisation.
			8 December	Amended to ply Cecil St, skipping Robinson Rd.
	St. Michael's ↔ Telok Blangah Way (1975 - 1980)	1975	21 July	Amended to Telok Blangah Way Ter.
				Amended to ply St. Andrew's Rd and Stamford Rd, skipping Coleman St and Hill St.
			14 December	Amended to ply Kg Java Rd, skipping Thomson Rd and Newton Rd.
		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	11 February	Amended to ply the extended Shenton Way towards Telok Blangah Way Ter, skipping Parsi Rd and Anson Rd.
			28 October	Amended to ply Sungei Rd (towards Telok Blangah Way Ter) and Bt Timah Rd (towards Jln Aman 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.
	St. Michael's ↔ Lower Delta (1980 - 1981)	1980	28 September	Amended to Lower Delta Ter.
	St. Michael's ↔ Bukit Merah (1981 - 1993)	1981	15 February	Amended to Bt Merah Int and amended to skip Telok Blangah Cres.
		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.
		1984	1 April	Amended to ply Moulmein Rd, skipping Norfolk Rd.
			27 May	Amended to ply Whampoa Dr when entering St. Michael's Est with the closure of Jln Kebun Limau to facilitate the construction of the Central Expressway (CTE).
		1988	3 January	Serves new staggered bus stop opposite Treasury Bldg along Shenton Way, skipping the bus stop opposite Marina Hse.
	St. Michael's ↺ Shenton Way (1993 - 2000)	1993	4 April	Shortened to loop at Shenton Way, amended to ply Lavender St, Serangoon Rd/Jln Besar, Rochor Canal Rd, Ophir Rd/Rochor Rd and Beach Rd and converted to a day service on weekdays and Saturdays under TransitLink Network Integration Exercise Phase 12, skipping Moulmein Rd, Thomson Rd, Keng Lee Rd, Kg Java Rd, Bt Timah Rd, Sungei Rd, Selegie Rd/Bencoolen St, Victoria St, Middle Rd and Bras Basah Rd/Stamford Rd.
		1994	TBC	Serves additional bus stop outside Balestier Twrs along Balestier Rd.
	St. Michael's ↺ Sims Dr (since 2000)	2000	27 November	Integrated with Service 20 and amended to loop at Sims Dr from St. Michael's Ter.
(Current)		2003	21 June	Amended to ply Bendemeer Rd, Jln Besar, Kitchener Rd and Serangoon Rd under North East MRT Line Rationalisation Phase 1.
		2011	29 May	Extended to operate on Sundays and Public Holidays.
		2012	25 June	Designated wheelchair-accessible bus service (WAB).

Short Trip 125A (2001 - 2005)

Operator	Year	Date	Service changes
	2001	TBC	Introduced from Sims Dr (Opp Blk 59) to Bendemeer Rd (Blk 54) during morning peak hours on weekdays.
	2005	TBC	Discontinued.

Short Trip 125A (since 2010)

Operator	Route	Year	Date	Service changes
(Current)	Aljunied Rd → MacPherson Rd (since 2010)	2010	TBC	Introduced from Aljunied Rd (Opp Aljunied Stn) to MacPherson Rd (POSBank) during morning peak hours on weekdays.
		2012	25 June	Designated wheelchair-accessible bus service (WAB).

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

Operator	Route	Year	Date	Service changes
(Current)	Tampines ↺ Tampines Ind Ave 5 (since 2016)	2016	18 December	Introduced between Tampines Int and Tampines Ind Ave 5 (Loop) under the LTA's Bus Service Enhancement Programme (BSEP), operating between 0530 hrs and 2330 hrs daily. Wheelchair-accessible at launch.
		2020	11 October	Amended to ply Tampines Nth Dr 1 and Tampines Ave 11, skipping Tampines Ave 9 and Tampines Ave 10.

Short Trip 127A

Operator	Route	Year	Date	Service changes
(Current)	Tampines → Tampines Ave 9 (2016 - 2020)	2016	18 December	Introduced from Tampines Int to Tampines Ave 9 (Blk 742A) under LTA's Bus Service Enhancement Programme (BSEP), operating after the last bus of Service 127 daily. Wheelchair-accessible at launch.
	Tampines → Tampines North Dr 1 (since 2020)	2020	11 October	Amended to terminate at the bus stop opposite Blk 610C along Tampines Nth Dr 1, with the amendment of Service 127 to ply Tampines Nth Dr 1 and Tampines Ave 11.
				Last bus extended to 0050 hrs daily.

Service 128 (2008 - 2020)

Operator	Year	Date	Service changes
	2008	7 July	Introduced between Ang Mo Kio Ave 6 and Shenton Way (AM Peak) and between Anson Rd and Ang Mo Kio Ave 6 (PM Peak) as a peak hour one-directional service on weekdays for a trial period of 6 months.
	2009	2 February	Amended to ply Braddell Rd and Thomson Rd, skipping Lor 6 Toa Payoh, Lor 1 Toa Payoh, Lor 2 Toa Payoh and Jln Toa Payoh.
	2012	30 September	Designated wheelchair-accessible bus service (WAB).
	2016	27 June	2 AM peak and 2 PM peak trips removed.
	2017	25 June	Amended to the relocated Shenton Way Ter.
	2020	8 April	Temporarily suspended due to COVID-19 Circuit Breaker measures in Singapore until 4 May 2020.
		5 May	Temporary suspension of service due to COVID-19 Circuit Breaker measures in Singapore extended until 1 June 2020.
		2 June	Discontinued.

Service 129

Operator	Route	Year	Date	Service changes
(Current)	Tampines Concourse ↔ St. Michael's (2016 - 2022)	2016	18 December	Introduced between Tampines Concourse Int and St. Michael's Ter under the LTA's Bus Service Enhancement Programme (BSEP), operating between 0545 hrs and 2330 hrs daily from Tampines Concourse Int and St. Michael's Ter. Wheelchair-accessible at launch.
		2017	28 May	Serves additional pair of bus stops outside and opposite Gambir Ridge along Bartley Rd.
	Tampines North ↔ St. Michael's (since 2022)	2022	27 November	Extended to Tampines Nth Int.

Short Trip 129A

Operator	Route	Year	Date	Service changes
(Current)	Tampines Ave 1 → Bartley Rd (since 2024)	2024	26 August	Introduced from Tampines Ave 1 (Temasek Poly East G) to Bartley Rd (Bartley Stn Exit A) during peak hours on weekdays. Wheelchair-accessible at launch.

Short Trip 129B

Operator	Route	Year	Date	Service changes
(Current)	Bartley Rd → Tampines Ave 1 (since 2024)	2024	26 August	Introduced from Bartley Rd (Gambir Ridge) to Tampines Ave 1 (Opp Temasek Poly East G) during peak hours on weekdays. Wheelchair-accessible at launch.

Service 130 / Short Trip 130A (2000 - 2023)

Refer to Bus Service 130 for more information.