History of Services 151 - 160

Service 151

Operator	Service Gen	Year	Date	Service changes
UBC	1st Gen (1971 - 1989)	1971	11 April	Introduced between Kim Keat Ave Ter and South Canal Ter under 1971 Bus Reorganisation.
			2 August	Amended to Toa Payoh Town Ctr Ter.
		1972	11 June	Amended to ply Upp Cross St with the partial conversion of Havelock Rd to one-way traffic, skipping Upp Hokien St.
		1974	3 February	Integrated with Service 159 and extended to Outram Park Ter under 1974 Bus Rationalisation.
		1975	2 February	Amended to ply Tiong Bahru Rd and the extended Zion Rd towards Toa Payoh Town Ctr Ter with the partial conversion of Kim Seng Rd and Outram Rd to one-way traffic.
		1976	TBC	Extended to loop at New Bridge Rd.
		1983	26 December	Amended to Toa Payoh Int.
		1986	16 November	Serves new staggered bus stop outside Thong Teck Bldg along Scotts Rd, skipping the bus stop outside Metro Orchard.
		1987	6 April	Skips abolished bus stop before College Rd along Outram Rd.
			1 November	Amended to ply Eu Tong Sen St towards Toa Payoh Int to facilitate the second stage of road expansion along New Bridge Rd.
		1989	28 May	Withdrawn.
	2nd Gen (Since 1993)	1993	4 April	Re-introduced between Hougang Int and Kent Ridge Ter under TransitLink Network Integration Exercise Phase 12.
		1994	11 September	Amended to ply Kent Ridge Cres.
Template:SBS Transit (Current)		2004	15 February	Extended to Hougang Central Int with the closure of Hougang South Int.
		2007	TBC	Skips abolished bus stop before Paya Lebar Rd along Airport Rd to facilitate the construction of KPE.
		2010	2 December	Designated wheelchair-accessible bus service (WAB).
		2011	4 September	Amended to skip Bendemeer Rd, Whampoa North and Serangoon Rd towards Kent Ridge Ter with the permanent closure of Whampoa North.
				Serves new bus stop outside Botanic Gdns Stn along Bt Timah Rd.

Service 151A

Operator	Year	Date	Service changes
Template:SBS Transit	2000	TBC	Introduced as a short-trip service from Kent Ridge Ter to Dunearn Rd (Opp Natl Inst of Education) during evening peak hours on weekdays.
	2010	2 December	Designated wheelchair-accessible bus service (WAB).
	2012	TBC	Withdrawn.

Service 152

Operator	Year	Date	Service changes
ABS	1971	11 April	Introduced between Lor 1 Toa Payoh Ter and Telok Kurau Rd Ter under 1971 Bus Reorganisation.
		2 August	Amended to Toa Payoh Town Ctr Ter.
	1973	1 July	Extended to Chai Chee Ter.
	1976	30 December	Amended to ply Sims Ave/Geylang Rd and the extended Tg Katong Rd, skipping Guillemard Rd.
	1977	15 August	Extended to Bedok South Rd Ter and amended to ply Sims Ave/Geylang Rd and Changi Rd, skipping Tg Katong Rd, Mountbatten Rd, East Coast Rd and Telok Kurau Rd.
	1979	8 April	Amended to Bedok Int.
		14 October	Amended to ply Sims Ave East towards Bedok Int with the conversion of Changi Rd to one-way traffic.
	1983	26 December	Amended to Toa Payoh Int.
	1998	31 May	Amended to Toa Payoh Temp Int.
			Serves new pair of bus stops outside and opposite Toa Payoh Swim Cplx along Lor 6 Toa Payoh.
	2000	29 October	Integrated with Service 28 and withdrawn.

Service 153

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between Lor 1 Toa Payoh Ter and Jln Bt Merah Ter under 1971 Bus Reorganisation.
		2 August	Amended to Toa Payoh Town Ctr Ter.
	1979	23 December	Amended to Bt Merah Central Ter.
	1980	28 September	Amended to Bt Merah Int.
	1983	26 December	Integrated with Service 156 and extended to Upp Serangoon Ter.
	1992	29 March	Amended to ply Bt Merah Central.
	1994	17 December	Amended to Hougang Central Int.
	1998	24 May	Amended to Hougang Central Temp Int.
	2001	20 May	Amended back to Hougang Central Int.
Template:SBS Transit (Current)	2002	TBC	Serves new pair of bus stops after Sommerville Rd and after Sunshine Lodge along Upp Serangoon Rd.
	2004	TBC	Skips abolished bus stop outside Nanyang Pr Sch along Farrer Rd.
	2011	4 September	Serves new bus stop outside Botanic Gdns Stn along Bt Timah Rd.
	2015	28 September	Designated wheelchair-accessible bus service (WAB).

Service 153A

Operator	Service Gen	Year	Date	Service changes
UBC	1st Gen (1971 - 1974)	1971	19 July	Introduced between Lor 1 Toa Payoh Ter and Jln Bt Merah Ter.
			2 August	Amended to Toa Payoh Town Ctr Ter.
		1974	3 February	Integrated with Service 95 and withdrawn under 1974 Bus Rationalisation.
Template:SBS Transit	2nd Gen (2002 - 2006)	2002	TBC	Re-introduced as a short-trip service from Hougang Central Int to Lor 2 Toa Payoh (Toa Payoh Stn) during morning peak hours on weekdays.
		2006	TBC	Withdrawn.

Service 154

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between MacPherson Ter and International Rd Ter under 1971 Bus Reorganisation.
	1978	1 June	Amended to Jurong Int and amended to ply MacPherson Rd, Serangoon Rd and Jln Toa Payoh, skipping Upp Aljunied Rd, Upp Serangoon Rd, Braddell Rd, Lor 5 Toa Payoh, Lor 4 Toa Payoh, Toa Payoh Central and Lor 2 Toa Payoh.
	1981	TBC	Amended to ply Clementi Rd, skipping Old Clementi Rd.
	1986	1 June	Skips abolished bus stop before Ayer Rajah Rd along Clementi Rd.
	1988	23 October	Amended to ply Commonwealth Ave West and Clementi Ave 6.
	1990	1 July	Extended to Eunos Int and amended to Boon Lay Int.
	1996	TBC	Skips a pair of abolished bus stops outside and opposite MOE Water Works along Jln Ahmad Ibrahim.
Template:SBS Transit (Current)	2003	16 March	Amended to ply Eunos Rd 5 and Eunos Rd 8 with the partial closure of Paya Lebar Rd to facilitate the construction of Paya Lebar MRT station on the Circle MRT Line.
	2006	18 June	Amended to Boon Lay Temp Int.
	2008	26 October	Serves new bus stop outside Kg Ubi CC along Jln Ubi.
	2009	23 August	Amended to ply the reinstated Paya Lebar Rd, skipping Eunos Rd 5 and Eunos Rd 8.
		22 November	Serves new bus stop opposite MacPherson Stn along Circuit Link.
		27 December	Amended to Boon Lay Integrated Transport Hub.
	2011	26 June	Amended to ply Lor Bengkok with the closure of Circuit Link to facilitate the construction of MacPherson MRT station on the Downtown MRT Line.
		26 September	Designated wheelchair-accessible bus service (WAB).
		4 September	Amended to skip Bendemeer Rd, Whampoa North and Serangoon Rd towards Boon Lay Integrated Transport Hub with the permanent closure of Whampoa North.
			Serves new bus stop outside Botanic Gdns Stn along Bt Timah Rd.
	2016	16 October	Amended to ply the reinstated Circuit Link, skipping Lor Bengkok.

Service 154A

Operator	Service Gen	Year	Date	Service changes
UBC	1st Gen (1971 - 1974)	1971	11 April	Introduced between New Bridge Rd Ter and Jln Besi Ter under 1971 Bus Reorganisation.
			1 September	Extended to Crawford St Ter.
			TBC	Extended to Benoi Rd Ter.
		1974	3 February	Re-numbered Service 209 under 1974 Bus Rationalisation.
	2nd Gen (2000 - 2011)	2000	TBC	Re-introduced as a short-trip service from Commonwealth Ave West (Clementi Stn) to Clementi Rd (Ngee Ann Poly) during morning peak hours on weekdays.
Template:SBS Transit (Current)		2001	TBC	Extended to start from Boon Lay Int.
		2006	18 June	Amended to Boon Lay Temp Int.
		2009	27 December	Amended to Boon Lay Integrated Transport Hub.
		2011	TBC	Withdrawn.
	3rd Gen (Since 2012)	2012	19 November	Re-introduced as a short-trip service from Yung Ho Rd (Blk 151) to Boon Lay Way (Lakeside Stn) during morning peak hours on weekdays. Wheelchair-accessible at launch.

Service 154B

Operator	Year	Date	Service changes
Template:SBS Transit (Current)	2014	6 January	Introduced as a short-trip service from Commonwealth Ave West (Clementi Stn) to Clementi Rd (Ngee Ann Poly) during morning peak hours on weekdays. Wheelchair-accessible at launch.
	2018	15 October	Extended to start from Boon Lay Integrated Transport Hub.

Service 155

Operator	Year	Date	Service changes
ABS	1971	11 April	Introduced between Kim Keat Ave Ter and Bedok Rd Ter under 1971 Bus Reorganisation.
		2 August	Amended to Toa Payoh Town Ctr Ter.
	1974	3 February	Amended to Chai Chee Ter under 1974 Bus Rationalisation.
		1 December	Amended to Upp Changi Rd 13.3 km Ter.
	1975	2 March	Amended to ply Sims Ave towards Upp Changi Rd 13.3 km Ter with the conversion of Geylang Rd to one-way traffic.
	1979	TBC	Relocated to Upp Changi Rd 15.5km Ter.
		14 October	Amended to ply Still Rd and Joo Chiat Pl towards Upp Changi Rd 15.5 km Ter with the conversion of Changi Rd to one-way traffic.
	1980	15 June	Amended to Somapah Int.
		28 December	Amended to ply Upp Changi Rd East, skipping Upp Changi Rd.
	1983	26 December	Amended to Toa Payoh Int.
	1986	7 December	Serves new bus stop before Bedok South Ave 3 along Upp East Coast Rd.
	1989	5 November	Shortened to Marine Parade Ter.
	1992	3 May	Amended to ply Geylang East Central and Paya Lebar Rd under TransitLink Network Integration Exercise Phase 7.
	1993	TBC	Serves bus stop outside Eunos Stn along Sims Ave with the abolition of the bus stop after Eunos Cres.
	1998	31 May	Amended to Toa Payoh Temp Int.
			Serves new pair of bus stops outside and opposite Toa Payoh Swim Cplx along Lor 6 Toa Payoh.
	2001	16 September	Amended to loop at Siglap Rd from Toa Payoh Int with the closure of Marine Parade Ter.
Template:SBS Transit (Current)	2002	19 May	Amended to Toa Payoh Integrated Transport Hub.
	2003	16 March	Amended to ply Eunos Rd 5 and Eunos Rd 8 with the partial closure of Paya Lebar Rd to facilitate the construction of Paya Lebar MRT station on the Circle MRT Line.
		TBC	Serves new bus stop outside Victoria Sch along Marine Parade Rd.
	2009	23 August	Amended to ply the reinstated Paya Lebar Rd, skipping Eunos Rd 5 and Eunos Rd 8.
	2011	26 June	Serves new staggered bus stop outside Kong Hwa Sch along Circuit Rd, skipping the bus stop outside MacPherson Sec Sch.
	2014	29 June	Designated wheelchair-accessible bus service (WAB).
	2016	16 October	Serves the bus stop outside MacPherson Sec Sch along Circuit Rd with the abolition of the bus stop outside Kong Hwa Sch.
	2017	12 March	Amended to ply Upp Serangoon Rd and the diverted Upp Aljunied Rd.
		9 April	Extended to Bedok Integrated Transport Hub.
	2019	14 April	Serves a new pair of bus stops outside and opposite Blk 3 along Bedok South Ave 1.

Service 155A

Operator	Service Gen	Year	Date	Service changes
ABS	1st Gen (1971 - 1974)	1971	11 April	Introduced between Lor 1 Toa Payoh Ter and Bedok Rd Ter.
			2 August	Amended to Toa Payoh Town Ctr Ter.
		1974	3 February	Re-numbered Service 135 under 1974 Bus Rationalization.
	2nd Gen (2001 - 2017)	2001	16 September	Re-introduced as a short-trip service from Toa Payoh Int to Siglap Rd (Opp Mandarin Gdns), operating after the last bus of Service 155 daily.
Template:SBS Transit		2002	19 May	Amended to Toa Payoh Integrated Transport Hub.
		2003	16 March	Amended to ply Eunos Rd 5 and Eunos Rd 8 with the partial closure of Paya Lebar Rd to facilitate the construction of Paya Lebar MRT station on the Circle MRT Line.
		2005	TBC	Extended to terminate at Marine Parade Rd (Victoria Sch).
		2009	23 August	Amended to ply the reinstated Paya Lebar Rd, skipping Eunos Rd 5 and Eunos Rd 8.
		2011	26 June	Serves new staggered bus stop outside Kong Hwa Sch along Circuit Rd, skipping the bus stop outside MacPherson Sec Sch.
		2014	29 June	Designated wheelchair-accessible bus service (WAB).
		2016	16 October	Serves the bus stop outside MacPherson Sec Sch along Circuit Rd with the abolition of the bus stop outside Kong Hwa Sch.
		2017	12 March	Amended to ply Upp Serangoon Rd and the diverted Upp Aljunied Rd.
			9 April	Withdrawn with the route extension of Service 155 to Bedok Integrated Transport Hub.

Service 156

Operator	Service Gen	Year	Date	Service changes
ABS	1st Gen (1971 - 1983)	1971	11 April	Introduced between Lor 1 Toa Payoh Ter and Upp Serangoon Ter under 1971 Bus Reorganisation.
			2 August	Amended to Toa Payoh Town Ctr Ter.
		1983	26 December	Integrated with Service 153 and withdrawn.
	2nd Gen (Since 1993)	1993	5 December	Re-introduced between Serangoon Int and Clementi Int under TransitLink Network Integration Exercise Phase 14.
		2001	29 July	Extended to Sengkang Int.
Template:SBS Transit (Current)		2003	18 January	Amended to Sengkang Integrated Transport Hub.
		2006	29 October	Amended to Clementi Temp Int.
		2011	4 September	Serves new bus stop outside Botanic Gdns Stn along Bt Timah Rd.
			26 September	Designated wheelchair-accessible bus service (WAB).
			26 November	Amended to Clementi Integrated Transport Hub.
		2015	27 December	Serves additional bus stop opposite Sixth Ave Stn along Dunearn Rd.

Service 156A

Operator	Service Gen	Year	Date	Service changes
	1st Gen (2000 - 2001)	2000	TBC	Introduced as a short-trip service from Serangoon Int to Bishan Rd (Bishan Stn) during morning peak hours on weekdays.
		2001	29 July	Withdrawn with the route extension of Service 156 to Sengkang Int.
Template:SBS Transit	2nd Gen (2006 - 2008)	2006	TBC	Re-introduced as a short-trip service from Boundary Rd (Blk 257A) to Bishan Rd (Bishan Stn) during morning peak hours on weekdays.
		2008	TBC	Withdrawn.
	3rd Gen (2009 - 2013)	2009	2 January	Re-introduced as a short-trip service from Sengkang Integrated Transport Hub to Thomson Rd (Opp Old Police Academy) during morning peak hours on weekdays.
		2011	26 September	Designated wheelchair-accessible bus service (WAB).
		2013	TBC	Withdrawn.

Service 157

Operator	Year	Date	Service changes
UBC	1971	22 June	Introduced between Lor 1 Toa Payoh Ter and Jln Samulun Ter.
		2 August	Amended to Toa Payoh Town Ctr Ter.
	1978	1 June	Amended to Jurong Int.
	1979	30 December	Amended to ply Jln Anak Bt towards Toa Payoh Town Ctr Ter with the partial conversion of Upp Bt Timah Rd to one-way traffic.
	1983	26 December	Amended to Toa Payoh Int.
	1985	17 March	Amended to ply Bt Batok Rd, Bt Batok West Ave 3, Bt Batok Central and Bt Batok East Ave 3 with the partial closure of Jurong Rd.
	1987	12 August	Skips abolished bus stop after Joan Rd along Lornie Rd.
	1989	27 August	Amended to ply Jurong East Ave 1, Jurong West Ave 1 and Corporation Rd, skipping Jln Ahmad Ibrahim.
	1990	1 July	Amended to Boon Lay Int.
	1996	TBC	Serves new bus stop outside Blk 220 along Boon Lay Ave.
	1998	31 May	Amended to Toa Payoh Temp Int.
			Serves new pair of bus stops outside and opposite Toa Payoh Swim Cplx along Lor 6 Toa Payoh.
Template:SBS Transit (Current)	2001	23 December	Amended to ply Corporation Rd, Jurong West Ave 2 and Jln Boon Lay, skipping Boon Lay Ave.
	2002	TBC	Serves new bus stop outside Goh & Goh Bldg along Jln Jurong Kechil.
		19 May	Amended to Toa Payoh Integrated Transport Hub.
	2005	TBC	Skips abolished bus stop outside Muhajirin Mosque along Braddell Rd.
	2006	18 June	Amended to Boon Lay Temp Int.
	2009	27 December	Amended to Boon Lay Integrated Transport Hub.
	2012	9 December	Amended to ply Upp Bt Timah Rd and Bt Timah Link with the partial closure of Jln Jurong Kechil to facilitate the construction of Beauty World MRT station on the Downtown MRT Line.
	2013	30 September	Designated wheelchair-accessible bus service (WAB).
	2014	26 January	Amended to ply the reinstated Jln Jurong Kechil, skipping Upp Bt Timah Rd and Bt Timah Link.
	2017	23 April	Serves relocated bus stop before PIE along Bt Batok Rd.
	2018	28 October	Amended to ply southbound Lornie Highway with the partial closure of Adam Rd.

Service 157A

Operator	Year	Date	Service changes
Template:SBS Transit	2010	18 September	Introduced as a temporary short-trip service from Boon Lay Integrated Transport Hub to Bt Batok Central (Opp Blk 628) during the closure of MRT stations for the Jurong East Modification Project (JEMP).
		20 September	Withdrawn.

Service 158

Operator	Year	Date	Service changes
ABS	1971	8 August	Introduced between Toa Payoh Town Ctr Ter and Fidelio St Ter.
	1973	1 July	Extended to Chai Chee Ter.
	1974	3 February	Amended to skip Fidelio St under 1974 Bus Rationalisation.
	1983	26 December	Amended to Toa Payoh Int.
	1985	8 September	Extended to Bedok Int with the closure of Chai Chee Ter.
	1990	4 February	Amended to Serangoon Int.
	1992	3 May	Shortened to loop at Tg Rhu Rd under TransitLink Network Integration Exercise Phase 7.
	1998	TBC	Serves new bus stop opposite Costa Rhu Condo along Rhu Cross, skipping a pair of bus stops outside and opposite AMCOL along Tg Rhu Rd.
Template:SBS Transit (Current)	2003	20 June	Calls at a new pair of bus stops outside Serangoon Stn along Serangoon Central.
	TBC	Skips a pair of abolished bus stops outside and opposite Camelot Condo along Tg Rhu Rd to facilitate the construction of KPE.
	2004	27 April	Amended to ply Geylang Rd, Kallang Rd and Sims Ave towards Serangoon Int with the temporary conversion of Lor 1 Geylang to one-way traffic.
		6 December	Amended to ply the reinstated Lor 1 Geylang towards Serangoon Int, skipping Geylang Rd, Kallang Rd and Sims Ave.
	2005	5 June	Amended to ply Sims Way with the partial closure of southbound Mountbatten Rd.
		2 July	Amended to ply Sims Way with the partial closure of northbound Mountbatten Rd.
	2009	8 March	Skips a pair of bus stops outside and opposite Bartley Sec Sch with the realignment of the junction of Upp Paya Lebar Rd and Bartley Rd.
		22 November	Serves new pair of bus stops outside and opposite MacPherson Stn along Circuit Link.
	2011	26 Jun	Amended to ply Lor Bengkok with the closure of Circuit Link to facilitate the construction of MacPherson MRT station on the Downtown MRT Line.
		3 September	Amended to Serangoon Integrated Transport Hub.
	2013	31 March	Designated wheelchair-accessible bus service (WAB).
	2014	10 August	Serves new bus stop opposite Blk 2 along Mountbatten Rd.
	2016	16 October	Amended to ply the reinstated Circuit Link, skipping Lor Bengkok.

Service 158A

Operator	Service Gen	Year	Date	Service changes
	1st Gen (2000 - 2006)	2000	TBC	Introduced as a short-trip service from Geylang Rd (Gay World Pk) to Tg Rhu Rd (Opp Dunman High Sch) during morning peak hours on weekdays.
Template:SBS Transit (Current)		2005	5 June	Amended to start from Aljunied Rd (Aljunied Stn) with the partial closure of Mountbatten Rd.
		2006	20 November	Withdrawn with the temporary relocation of Dunman High Sch for renovation.
	2nd Gen (Since 2009)	2009	2 January	Re-introduced as a short-trip service from Aljunied Rd (Aljunied Stn) to Tg Rhu Rd (Opp Dunman High Sch) during morning peak hours on weekdays.
		2011	1 August	Integrated with Service 158B and amended to loop at Rhu Cross.
		2013	31 March	Designated wheelchair-accessible bus service (WAB).
		2014	10 August	Serves new bus stop opposite Blk 2 along Mountbatten Rd.

Service 158B

Operator	Service Gen	Year	Date	Service changes
	1st Gen (2000 - 2006)	2000	TBC	Introduced as a short-trip service from Tg Rhu Rd (Dunman High Sch) to Sims Ave (Aft Lor 1 Geylang) during evening peak hours on weekdays.
Template:SBS Transit (Current)		2004	27 April	Amended to ply Geylang Rd, Kallang Rd and Sims Ave towards Serangoon Int with the temporary conversion of Lor 1 Geylang to one-way traffic.
			6 December	Amended to ply the reinstated Lor 1 Geylang towards Serangoon Int, skipping Geylang Rd, Kallang Rd and Sims Ave.
		2005	2 July	Amended to terminate at Aljunied Rd (Opp Aljunied Stn) with the partial closure of Mountbatten Rd.
		2006	20 November	Withdrawn with the temporary relocation of Dunman High Sch for renovation.
	2nd Gen (2009 - 2011)	2009	2 January	Re-introduced as a short-trip service from Tg Rhu Rd (Dunman High Sch) to Aljunied Rd (Opp Aljunied Stn) during evening peak hours on weekdays.
		2011	1 August	Integrated with Service 158A and withdrawn.

Service 159

Operator	Service Gen	Year	Date	Service changes
UBC	1st Gen (1971 - 1974)	1971	10 August	Introduced between Toa Payoh Town Ctr Ter and Outram Park Ter.
		1973	11 March	Amended to ply Zion Rd and Hoot Kiam Rd towards Toa Payoh Town Ctr Ter with the partial conversion of Kim Seng Rd and Irwell Bank Rd to one-way traffic.
		1974	3 February	Integrated with Service 151 and withdrawn under 1974 Bus Rationalisation.
	2nd Gen (Since 1977)	1977	25 April	Re-introduced between Toa Payoh Town Ctr Ter and Ang Mo Kio Ave 6 (Loop).
		1983	10 April	Amended to loop at Ang Mo Kio Int.
			26 December	Amended to Toa Payoh Int.
		1984	3 June	Amended to ply CTE towards Ang Mo Kio Int with the partial closure of Lor Chuan to facilitate the construction of Braddell Viaduct.
		1989	5 March	Amended to ply Lor Chuan towards Ang Mo Kio Int, skipping express sectors along CTE.
		1998	31 May	Amended to Toa Payoh Temp Int.
				Serves new pair of bus stops outside and opposite Toa Payoh Swim Cplx along Lor 6 Toa Payoh.
		2001	18 February	Extended to Sengkang Ter.
			28 April	Amended to Sengkang Temp Int.
Template:SBS Transit (Current)		2002	19 May	Amended to Toa Payoh Integrated Transport Hub.
		2003	18 January	Amended to loop at Sengkang Integrated Transport Hub from Toa Payoh Integrated Transport Hub.
		2005	TBC	Amended to terminate at Sengkang Integrated Transport Hub.
		2015	30 March	Designated wheelchair-accessible bus service (WAB).

Service 159A

Operator	Service Gen	Year	Date	Service changes
	1st Gen (2001 - 2005)	2001	TBC	Introduced as a short-trip service from Sengkang Temp Int to Ang Mo Kio Ave 8 (Opp Blk 710) during morning peak hours on weekdays.
Template:SBS Transit (Current)		2003	18 January	Amended to Sengkang Integrated Transport Hub.
		2005	TBC	Withdrawn.
	2nd Gen (Since 2009)	2009	6 April	Re-introduced as a short-trip service from Sengkang Integrated Transport Hub to Ang Mo Kio Ave 8 (Opp Blk 710) during morning peak hours on weekdays.
		2015	30 March	Designated wheelchair-accessible bus service (WAB).

Service 159B

Operator	Year	Date	Service changes
Template:SBS Transit (Current)	2013	7 January	Introduced as a short-trip service from Ang Mo Kio Ave 8 (Jubilee) to Ang Mo Kio Ave 5 (ITE College Ctrl) during morning peak hours on weekdays.
	2015	30 March	Designated wheelchair-accessible bus service (WAB).

Service 160

Operator	Service Gen	Year	Date	Service changes
UBC	1st Gen (1971 - 1998)	1971	11 April	Introduced between Crawford St Ter and Rotherham Gate Ter under 1971 Bus Reorganisation.
			6 November	Amended to ply Canberra Rd, skipping Admiralty Rd East.
		1974	3 February	Amended to ply Old Upp Thomson Rd under 1974 Bus Rationalisation.
		1976	22 August	Amended to Admiralty Rd West Ter.
		1978	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 Admiralty Rd West 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	16 March	Amended to ply Upp Thomson Rd, skipping Old Upp Thomson Rd.
		1983	3 April	Operations transferred to TIBS.
		1990	21 February	Skips abolished bus stop opposite Jasmine Rd along Upp Thomson Rd.
		1996	10 February	Amended to ply Middle Rd towards Crawford St Ter and Jln Sultan, Beach Rd, Middle Rd, Victoria St, Rochor Rd and Rochor Canal Rd towards Admiralty Rd West Ter.
		1998	27 December	Extended to Lor 1 Geylang Ter and re-numbered Service 980.
Template:SBS Transit (Current)	2nd Gen (Since 2004)	2004	5 September	Re-introduced between Jurong East Int and Kotaraya II Ter (Johor Bahru) as a cross border service.
		2008	16 December	Serves additional bus stop outside JB Sentral along Jln Tun Abdul Razak towards Kotaraya II Ter.
		2009	5 July	Amended to ply Boon Lay Way with the closure of Jurong East St 12 to facilitate the Jurong East Modification Project (JEMP).
		2011	17 December	Amended to Jurong East Temp Int.
		2014	1 November	Amended to loop at Jln Tun Abdul Razak with the permanent closure of Kotaraya II Ter.
		2015	1 March	Amended to loop at JB Sentral Ter, skipping Jln Tun Abdul Razak.
		2016	11 December	Serves new bus stop opposite Blk 635A along Woodlands Rd.
		2017	23 April	Serves relocated bus stop before PIE along Bt Batok Rd.
			28 May	Skips abolished bus stop opposite Mandai Rd along Woodlands Rd.
			21 August	Designated wheelchair-accessible bus service (WAB).
		2018	25 March	Amended to ply Woodlands Ave 3 and Woodlands Centre Rd towards JB Sentral Ter.
			10 June	Serves new bus stop before Yew Tee Flyover along Woodlands Rd.
		2020	18 March	Temporarily shortened to loop at Woodlands Centre Rd due to Movement Control Order in Malaysia until 31 March 2020, skipping Woodlands Crossing, Johor Bahru and JB Sentral Ter.
			1 April	Temporary amendment to loop at Woodlands Centre Rd due to Movement Control Order in Malaysia extended until 14 April 2020.
			15 April	Temporary amendment to loop at Woodlands Centre Rd due to Movement Control Order in Malaysia extended until 28 April 2020.
			29 April	Temporary amendment to loop at Woodlands Centre Rd due to Movement Control Order in Malaysia extended until 12 May 2020.
			13 May	To be reinstated back to loop at JB Sentral Ter.

Service 160A

Operator	Service Gen	Year	Date	Service changes
UBC	1st Gen (1971 - 1974)	1971	3 May	Introduced between Rotherham Gate Ter and New Bridge Rd Ter.
			10 August	Amended to ply Dunearn Rd, Bt Timah Rd, Newton Circus and Balmoral Rd.
		1974	3 February	Re-numbered Service 167 under 1974 Bus Rationalisation.
Template:SBS Transit (Current)	2nd Gen (Since 2018)	2018	19 November	Re-introduced as a short-trip service from Jurong East Temp Int to Bt Batok Rd (Opp Dunearn Sec Sch) during peak hours on weekdays. Wheelchair-accessible at launch.