History of Services 150 - 159

Service 151

1st Generation (1971 - 1989)

Operator	Route	Year	Date	Service changes
United Bus Company	Kim Keat Ave ↔ South Canal	1971	11 April	Introduced between Kim Keat Ave Ter and Sth Canal Ter under 1971 Bus Reorganisation.
	Toa Payoh ↔ South Canal		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.
		1973	1 July	Operations transferred to Singapore Bus Services.
	Toa Payoh ↔ Outram Pk	1974	3 February	Integrated with Service 159 and extended to Outram Pk 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.
	Toa Payoh ↺ New Bridge Rd	1976	1 January	Extended to loop at New Bridge Rd from Toa Payoh Town Ctr Ter.
		1983	26 December	Amended to Toa Payoh Int and converted to day service on weekdays & Saturdays.
		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 removed 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	Discontinued.

2nd Generation (Current)

Bus Service 151

Service 152 (1971 - 2000)

Operator	Route	Year	Date	Service changes
Associated Bus Services	Lor 1 Toa Payoh ↔ Telok Kurau Rd	1971	11 April	Introduced between Lor 1 Toa Payoh Ter and Telok Kurau Rd Ter under 1971 Bus Reorganisation.
	Toa Payoh ↔ Telok Kurau Rd		2 August	Amended to Toa Payoh Town Ctr Ter.
	Toa Payoh ↔ Chai Chee	1973	1 July	Operations transferred to Singapore Bus Services.
				Extended to Chai Chee Ter.
		1976	30 December	Amended to ply Sims Ave/Geylang Rd and the extended Tg Katong Rd, skipping Guillemard Rd.
	Toa Payoh ↔ Bedok South Rd	1977	15 August	Extended to Bedok Sth 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.
	Toa Payoh ↔ Bedok	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 discontinued.

Service 153 (Current)

Bus Service 153

Service 153A (1971 - 1974)

Operator	Route	Year	Date	Service changes
United Bus Company	Lor 1 Toa Payoh ↔ Henderson Rd	1971	19 July	Introduced between Lor 1 Toa Payoh Ter and Jln Bt Merah Ter.
	Toa Payoh ↔ Henderson Rd		2 August	Amended to Toa Payoh Town Ctr Ter.
		1973	1 July	Operations transferred to Singapore Bus Services.
		1974	3 February	Integrated with Service 95 and discontinued under 1974 Bus Rationalisation.

Service 154 (Current)

Bus Service 154

Service 154A (1971 - 1974)

Operator	Route	Year	Date	Service changes
United Bus Company	New Bridge Rd ↔ Jln Besi	1971	11 April	Introduced between New Bridge Rd Ter and Jln Besi Ter under 1971 Bus Reorganisation.
	Crawford St ↔ Jln Besi		1 September	Extended to Crawford St Ter.
	Crawford St ↔ Benoi Rd		TBC	Extended to Benoi Rd Ter.
		1973	1 July	Operations transferred to Singapore Bus Services.
		1974	3 February	Re-numbered Service 209 under 1974 Bus Rationalisation.

Service 155 (Current)

Bus Service 155

Service 155A (1971 - 1974)

Operator	Route	Year	Date	Service changes
Associated Bus Services	Lor 1 Toa Payoh ↔ Bedok Rd	1971	11 April	Introduced between Lor 1 Toa Payoh Ter and Bedok Rd Ter.
	Toa Payoh ↔ Bedok Rd		2 August	Amended to Toa Payoh Town Ctr Ter.
		1973	1 July	Operations transferred to Singapore Bus Services.
		1974	3 February	Re-numbered Service 135 under 1974 Bus Rationalization.

Service 156

1st Generation (1971 - 1983)

Operator	Route	Year	Date	Service changes
Associated Bus Services	Lor 1 Toa Payoh ↔ Upp Serangoon	1971	11 April	Introduced between Lor 1 Toa Payoh Ter and Upp Serangoon Ter under 1971 Bus Reorganisation.
	Toa Payoh ↔ Upp Serangoon		2 August	Amended to Toa Payoh Town Ctr Ter.
		1973	1 July	Operations transferred to Singapore Bus Services.
		1983	6 February	Amended to ply CTE towards Upp Serangoon Ter with the closure of temporary slip road between Braddell Rd and Lor Chuan.
			20 June	Amended back to ply Lor Chuan towards Upp Serangoon Ter with the opening of new link road between Braddell Rd and Lor Chuan under Braddell Flyover.
			26 December	Integrated with Service 153 and discontinued.

2nd Generation (Current)

Bus Service 156

Service 157 (Current)

Bus Service 157

Service 158 (Current)

Bus Service 158

Service 159

1st Generation (1971 - 1974)

Operator	Route	Year	Date	Service changes
United Bus Company	Toa Payoh Town Ctr ↔ Outram Pk	1971	11 August	Introduced between Toa Payoh Town Ctr Ter and Outram Pk 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.
			1 July	Operations transferred to Singapore Bus Services.
		1974	3 February	Integrated with Service 151 and discontinued under 1974 Bus Rationalisation.

2nd Generation (Current)

Bus Service 159

Service 160

1st Generation (1971 - 1998)

Operator	Route	Year	Date	Service changes
United Bus Company	Crawford St ↔ Rotherham Gate	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.
		1973	1 July	Operations transferred to Singapore Bus Services.
		1974	3 February	Amended to ply Old Upp Thomson Rd under 1974 Bus Rationalisation.
	Crawford St ↔ Admiralty Rd West	1976	23 August	Amended to Admiralty Rd West 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 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.
			25 November	Amended to ply Upp Thomson Rd, skipping Old Upp Thomson Rd.
	Admiralty Rd West ↔ Crawford St	1983	3 April	Operations transferred to Trans Island Bus Services.
		1990	21 February	Skips removed 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.
		1997	TBC	First bus from Admiralty Rd West Ter brought forward to 0600 hrs on Sundays and Public Holidays.
			TBC	Last bus from Crawford St Ter extended to 2330 hrs on weekdays.
		1998	27 December	Extended to Lor 1 Geylang Ter and re-numbered Service 980.

2nd Generation (Current)

Bus Service 160

Service 160A (1971 - 1974)

Operator	Route	Year	Date	Service changes
United Bus Company	Rotherham Gate ↔ New Bridge Rd	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.
		1973	1 July	Operations transferred to Singapore Bus Services.
		1974	3 February	Re-numbered Service 167 under 1974 Bus Rationalisation.

Service 160M (2020 - 2023)

Bus Service 160M

Service 161

1st Generation (1971 - 1992)

Operator	Route	Year	Date	Service changes
United Bus Company	Sembawang Rd End ↔ Prince Edward	1971	11 April	Introduced between Sembawang Rd End Ter and Prince Edward Ter under 1971 Bus Reorganisation.
		1973	1 July	Operations transferred to Singapore Bus Services.
		1974	8 December	Amended to ply Cecil St, skipping Robinson Rd.
		1976	14 March	Serves new staggered bus stop outside The Cenotaph along Connaught Dr, skipping the bus stop opposite Singapore Cricket Club.
		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, Palmer Rd and Anson Rd, skipping Parsi Rd.
			28 October	Amended to ply Sungei Rd (towards Prince Edward Ter) and Bt Timah Rd (towards Sembawang Rd End 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.
		1983	8 May	Operations transferred to Trans Island Bus Services.
	Sembawang Rd End ↔ Shenton Way	1987	28 June	Amended to Shenton Way Ter.
		1990	21 February	Skips removed bus stop opposite Jasmine Rd along Upp Thomson Rd.
		1992	20 September	Integrated with Service 167 and discontinued under TransitLink Network Integration Exercise Phase 9.

2nd Generation (Current)

Bus Service 161

Service 162

1st Generation (1971 - 1974)

Operator	Route	Year	Date	Service changes
United Bus Company	Crawford St ↺ Nee Soon Transit Camp	1971	11 April	Introduced between Crawford St Ter and Nee Soon Transit Camp (Loop) under 1971 Bus Reorganisation.
			5 July	Amended to ply Old Upp Thomson Rd.
		1973	1 July	Operations transferred to Singapore Bus Services.
		1974	3 February	Discontinued under 1974 Bus Rationalisation.

2nd Generation (1977 - 1991)

Operator	Route	Year	Date	Service changes
	Ang Mo Kio Ave 6 ↺ Sims Ave	1977	21 November	Introduced between Ang Mo Kio Ave 6 Ter and Sims Ave (Loop).
		1978	29 December	Coverted to a semi-express service and amended to ply Lor Chuan and Upp Serangoon Rd.
		1979	10 September	Serves all bus stops along Lor Chuan and Upp Serangoon Rd.
	Ang Mo Kio ↺ Sims Ave	1980	6 January	Amended to Ang Mo Kio Ave 3 Ter.
		1981	10 May	Skips bus stop before Braddell Flyover along Braddell Rd.
			5 July	Amended to Ang Mo Kio Ctrl 2 Ter.
		1982	11 June	Amended to ply Bendemeer Rd and Geylang Bahru, skipping Jln Kolam Ayer.
		1983	6 February	Amended to ply CTE towards Ang Mo Kio Ctrl 2 Ter with the closure of temporary slip road between Braddell Rd and Lor Chuan.
			10 April	Amended to Ang Mo Kio Int.
			20 June	Amended to ply CTE towards Sims Ave.
		1986	16 March	Integrated with Service 77 and amended to ply Boundary Rd, Serangoon Ave 2 and Upp Serangoon Rd, skipping CTE and Braddell Rd.
		1991	6 January	Discontinued under TransitLink Network Integration Exercise Phase 1.

3rd Generation (Current)

Bus Service 162

Service 162X/162M (2001 - 2023)

Bus Service 162M

Service 163 / Short-Trip 163A / Short-Trip 163B

Bus Service 163

Service 163A (1971 - 1974)

Operator	Route	Year	Date	Service changes
UBC	Sembawang Hills Dr ↔ Prince Edward (Apr - Oct 1971)	1971	6 July	Introduced between Sembawang Hills Dr and Prince Edward Ter.
	Sembawang Hills Dr ↺ Tg Pagar Rd (Oct 1971 - 1974)		4 October	Extended to loop at Tg Pagar Rd.
		1974	3 February	Re-numbered Service 168 under 1974 Bus Rationalization.

Service 163M (2008 - 2019)

Bus Service 163M

Service 164 (1971 - 1989)

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between Sembawang Rd End Ter and New Bridge Rd Ter under 1971 Bus Reorganisation.
	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	1 November	Operations transferred to SBS.
	1983	8 May	Operations transferred to TIBS.
	1987	6 June	Amended to the relocated New Bridge Rd Ter.
		1 November	Amended to ply Eu Tong Sen St towards Sembawang Rd End Ter to facilitate the second stage of road expansion along New Bridge Rd.
	1988	20 March	Amended to ply New Bridge Rd, skipping Upp Pickering St, Sth Bridge Rd and Neil Rd.
	1989	29 January	Serves relocated bus stop opposite Sri Mariamman Tp along Sth Bridge Rd, skipping a removed bus stop opposite Jamae Mque.
		1 October	Discontinued.

Service 165

Bus Service 165

Service 166 (1971 - 1974)

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between Sembawang Rd End Ter and Nee Soon Rd (loop) under 1971 Bus Reorganisation.
	1974	3 February	Discontinued under 1974 Bus Rationalisation.

Service 166 (since 1976)

Bus Service 166

Service 167

Bus Service 167

Service 168 (1974 - 1989)

Operator	Route	Year	Date	Service changes
	Sembawang Hills Dr ↔ Tg Pagar Rd (1974 - 1976)	1974	3 February	Re-numbered from Service 163A as a service between Sembawang Hills Dr and Tg Pagar Rd Ter under 1974 Bus Rationalisation.
			24 February	Amended to ply Grange Rd, Orchard Blvd and Paterson Rd towards Sembawang Hills Dr with the conversion of Orchard Rd to one-way traffic.
	Ang Mo Kio Ave 6 ↺ South Canal (1976 - 1978)	1976	15 February	Extended to Ang Mo Kio Ave 6 Ter and amended to Sth Canal Ter.
	Ang Mo Kio Ave 6 ↺ Orchard Rd (1978 - 1979)	1978	29 December	Shortened to loop at Orchard Rd from Ang Mo Kio Ave 6 Ter and converted to semi-express service.
	Ang Mo Kio ↺ Orchard Rd (1979 - 1989)	1979	12 August	Amended to Ang Mo Kio Ave 3 Ter.
			15 October	Amended to ply Marymount Rd.
		1981	5 July	Amended to Ang Mo Kio Ctrl 2 Ter.
		1983	10 April	Amended to Ang Mo Kio Int.
		1987	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.
		1989	11 June	Discontinued.

Service 168 / Short-Trip 168A

Bus Service 168

Service 169 / Short-Trip 169A / Short-Trip 169B

Bus Service 169