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)

Operator	Year	Date	Service changes
(Current)	2014	16 March	Introduced between New Bridge Rd Ter and Telok Blangah Cres (Loop) under the LTA's Bus Service Enhancement Programme (BSEP), operating between 0600 hrs and 2330 hrs daily.
		29 June	Designated wheelchair-accessible bus service (WAB).
	2018	10 March	Extended to Kg Bahru Ter with the closure of New Bridge Rd Ter.
			First bus brought forward to 0555 hrs daily.
	2023	17 December	Extended to start from Shenton Way Ter under Thomson-East Coast Line Bus Rationalisation.

Service 122 (1971 - 1993)

Operator	Year	Date	Service changes
ABC	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.
	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.
	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.
	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	Year	Date	Service changes
(Current)	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).
	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

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between Jln Aman Ter and Sth Canal Ter under 1971 Bus Reorganisation.
		9 May	Amended to Kg Bahru Rd Ter.
UBC		6 December	Operations transferred to UBC.
	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.
	1975	2 February	Amended to ply Zion Rd and Ganges Ave towards Jln Aman Ter with the partial conversion of Outram Rd to one-way traffic.
	1976	8 August	Amended to loop at New Bridge Rd.
	1978	TBC	Amended to ply Moulmein Rd, skipping Norfolk 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.
	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).
	1987	6 April	Skips abolished bus stop before College Rd along Outram 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.
			Serves new bus stop outside Newton Stn along Scotts Rd.
	1992	19 July	Amended to ply Orchard Lk due to the closure of Grange Rd to facilitate road expansion works.
		TBC	Amended to ply Clemenceau Ave towards St. Michael's Ter, skipping Tank Rd.
	1993	4 April	Shortened to loop at Tomlinson Rd from New Bridge Rd Ter under TransitLink Network Integration Exercise Phase 12.
		23 May	Integrated with Service 14, extended to start from Bt Merah Int and amended to loop at Bt Purmei Ave under TransitLink Network Integration Exercise Phase 13.
	1999	TBC	First bus brought forward to 0545 hrs on weekdays and Saturdays.
(Current)	2002	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.
		30 October	Serves new bus stop outside Blk 94 along Zion Rd.
	2008	14 July	Designated wheelchair-accessible bus service (WAB).
	2014	24 August	Extended to HarbourFront Int.
	2017	30 July	Extended to Sentosa’s Beach Station Ter, skipping Telok Blangah Rd and HarbourFront Int.

Short Trip 123A (2005 - 2014)

Operator	Year	Date	Service changes
	2005	TBC	Introduced from Bt Purmei Ave (Opp Blk 109) to Tiong Bahru Rd (Tiong Bahru Plaza) during morning peak hours on weekdays.
	2008	14 July	Designated wheelchair-accessible bus service (WAB).
	2014	24 August	Discontinued with the conversion of Service 123M to a full day service.

Short Trip 123B (2005 - 2008)

Operator	Year	Date	Service changes
	2005	TBC	Introduced as a short-trip service from Tiong Bahru Rd (Opp Tiong Bahru Plaza) to Bt Purmei Ave (Blk 109) during evening peak hours on weekdays.
	2007	15 January	Extended to terminate at Tiong Bahru Rd (Opp Tiong Bahru Plaza) and converted to loop service.
	2008	28 January	Re-numbered Service 123M.

Service 123M

Operator	Year	Date	Service changes
(Current)	2008	28 January	Converted from Short Trip 123B as a route variant of Service 123 between Tiong Bahru Rd (Opp Tiong Bahru Plaza) and Bt Purmei Ave (Loop) during evening peak hours on weekdays.
		14 July	Designated wheelchair-accessible bus service (WAB).
	2014	24 August	Converted to a full day service, extended to start from HarbourFront Int and amended to loop at Tiong Bahru Rd under the LTA's Bus Service Enhancement Programme (BSEP).

Service 124

Operator	Year	Date	Service changes
STC	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.
	1976	18 July	Extended to loop at Telok Blangah Rise.
	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.
	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.
	2003	23 November	Amended to loop at Telok Blangah Dr.
	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).
	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 the bus stop after Hosp Dr along Eu Tong Sen St, skipping abolished 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	Year	Date	Service changes
STC	1971	11 April	Introduced between Jln Aman Ter and Alexandra Rd Ter under 1971 Bus Reorganisation.
		TBC	Extended to Delta Circus Ter.
UBC		6 December	Operations transferred to UBC.
	1974	3 February	Amended to Jln Bt Merah Ter under 1974 Bus Rationalisation.
		8 December	Amended to ply Cecil St, skipping Robinson Rd.
	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.
	1980	28 September	Amended to Lower Delta Ter.
	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.
	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.
	2000	27 November	Integrated with Service 20 and amended to loop at Sims Dr.
(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	Year	Date	Service changes
(Current)	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
United Bus Company	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 abolished bus stop opposite Jamae Mque.
	1990	16 April	Discontinued.

Service 127

Operator	Year	Date	Service changes
(Current)	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	Year	Date	Service changes
(Current)	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.
	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	Year	Date	Service changes
(Current)	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.
	2022	27 November	Extended to Tampines Nth Int.

Service 130

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between Balestier Rd Ter and Tg Pagar Ter under 1971 Bus Reorganisation.
UBC		6 December	Operations transferred to UBC.
	1974	3 February	Extended to Sin Ming Rd Ter under 1974 Bus Rationalisation.
		8 December	Amended to ply Cecil St, skipping Robinson Rd.
	1979	11 February	Amended to ply the extended Shenton Way, Rambau St and Trafalgar St towards Tg Pagar Ter, skipping Parsi Rd.
		1 August	Amended to Anson Rd Ter.
		28 October	Amended to ply Ophir Rd and Blanco Court towards Anson Rd Ter with the conversion of Rochor Rd to one-way traffic.
	1983	2 January	Amended to ply Balestier Rd, Lavender St and Serangoon Rd/Jln Besar, skipping Rangoon Rd, Kitchener Rd, Kg Kapor Rd and Upp Weld Rd.
		30 October	Extended to Ang Mo Kio Int.
			Amended to ply Robinson Rd, skipping Cecil St.
			Amended to ply Victoria St and Jln Sultan, skipping Arab St and Rochor Canal Rd.
	1985	27 January	Amended to Prince Edward Ter with the closure of Anson Rd Ter.
	1987	28 June	Amended to Shenton Way Ter.
	1993	11 April	Amended to ply Victoria St, skipping Nth Bridge Rd.
	1999	TBC	Serves the bus stop opposite Bugis Junction along Victoria St, skipping the bus stop outside Bugis Stn.
	2000	TBC	Serves new bus stop after Shenton Way along Palmer Rd.
(Current)	2002	24 March	Amended to Ang Mo Kio Temp Int.
	2003	21 June	Amended to ply Serangoon Rd, Boon Keng Rd and Bendemeer Rd under North East MRT Line Rationalisation Phase 1.
		TBC	Serves the bus stop outside Bugis Stn along Victoria St, skipping the bus stop opposite Bugis Junction.
	2007	28 April	Amended to Ang Mo Kio Integrated Transport Hub.
			Serves additional bus stop outside Victoria Concert Hall along Fullerton Rd.
	2008	2 December	Designated wheelchair-accessible bus service (WAB).
	2015	19 April	Amended to ply St. Andrew's Rd and Stamford Rd, skipping Coleman St and Hill St.
	2016	1 May	Amended to ply Esplanade Dr with the partial closure of Fullerton Rd.
	2017	25 June	Amended to the relocated Shenton Way Ter.
	2020	8 November	Skips the bus stop opposite SLF Cplx along Thomson Rd to facilitate the construction of the North-South Corridor (NSC).
	2021	26 December	Amended to ply Esplanade Dr towards Shenton Way Ter with the closure of Connaught Dr.

Short Trip 130A (2000 - 2023)

Operator	Year	Date	Service changes
	2000	TBC	Introduced from Ang Mo Kio Int to Sin Ming Dr (Blk 25), operating during morning peak hours on weekdays and on the 27th day of every lunar month.
	2002	24 March	Amended to Ang Mo Kio Temp Int.
	2006	TBC	Revised to operate during the Qing Ming period & Vesak Day only.
	2007	28 April	Amended to Ang Mo Kio Integrated Transport Hub.
	2008	2 December	Designated wheelchair-accessible bus service (WAB).
	2020	TBC	Revised to operate during the Qing Ming period only.
	2023	1 April	Discontinued. (last operations in 2021)