View source for History of Services 141 - 150

==Service 141 (1971 - 1988)==
{| class="toccolours bushist" border="1" cellpadding="3"
|-class="PAST"
!Operator
!Route
!Year
!Date
!Service changes
|-
!rowspan="2"|STC
!Kim Keat Ave ↔ Prince Edward (Apr - Aug 1971)
|rowspan="3"|1971
|11 April
|Introduced between Kim Keat Ave Ter and Prince Edward Ter under 1971 Bus Reorganisation.
|-
!rowspan="7"|Toa Payoh ↔ Prince Edward (Aug 1971 - 1983)
|2 August
|Amended to Toa Payoh Town Ctr Ter.
|-
!UBC
|6 December
|Operations transferred to UBC.
|-
!rowspan="8"|{{SBS}}
|1974
|8 December
|Amended to ply Cecil St, skipping Robinson Rd.
|-
|1975
|21 July
|Amended to ply St. Andrew's Rd and Stamford Rd, skipping Coleman St and Hill St.
|-
|1976
|14 March
|Serves new staggered 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.
|-
|rowspan="2"|1983
|2 January
|Amended to serve Balestier Rd, Lavender St and Serangoon Rd/Jln Besar, skipping Rangoon Rd and Kitchener Rd.
|-
!Toa Payoh ↺ Robinson Rd (1983 - 1985)
|26 December
|Amended to Toa Payoh Int, amended to loop at Robinson Rd and converted to a semi-express service on weekdays and Saturdays only.
|-
!rowspan="2"|Toa Payoh ↺ Cecil St (1985 - 1988)
|1985
|15 April
|Serves all bus stops along Connaught Dr, Collyer Quay, Raffles Quay and Shenton Way and amended to ply Cecil St, Dhoby Ghaut, Selegie Rd, Bt Timah Rd and Kg Java Rd towards Toa Payoh Int.
|-
|1988
|24 January
|Discontinued.
|}

==Service 141 (since 2013) {{WAB}}==
{| class="toccolours bushist" border="1" cellpadding="3"
|-class="BUS"
!Operator
!Route
!Year
!Date
!Service changes
|-
!rowspan="4"|{{SBST}}<br>(Current)
!rowspan="4"|Lor 1 Geylang ↔ Toa Payoh (since 2013)
|rowspan="2"|2013
|9 June
|Introduced between Lor 1 Geylang Ter and Toa Payoh Int under the LTA's Bus Service Enhancement Programme (BSEP), operating between 0600 hrs and 2330 hrs daily from Lor 1 Geylang Ter and between 0600 hrs and 2345 hrs daily from Toa Payoh Int.
|-
|30 September
|{{DWAB}}
|-
|2020
|8 November
|Skips the bus stop opposite SLF Cplx along Thomson Rd to facilitate the construction of the North-South Corridor (NSC).
|-
|2024
|24 March
|Serves new bus stop outside Blk 131B along Toa Payoh Rise.
|}

==Service 141A (1971 - 1974)==
{| class="toccolours bushist" border="1" cellpadding="3"
|-class="PAST"
!Operator
!Route
!Year
!Date
!Service changes
|-
!rowspan="2"|STC
!Lor 6 Toa Payoh ↺ Finlayson Green (Apr - Aug 1971)
|rowspan="3"|1971
|11 April
|Introduced between Lor 6 Toa Payoh Ter and Finlayson Green (Loop) under 1971 Bus Reorganisation.
|-
!rowspan="3"|Toa Payoh ↺ Finlayson Green (Aug 1971 - 1974)
|2 August
|Amended to Toa Payoh Town Ctr Ter.
|-
!UBC
|6 December
|Operations transferred to UBC.
|-
!{{SBS}}
|1974
|3 February
|Integrated with Service 141 and discontinued under 1974 Bus Rationalisation.
|}

==Service 142 (1971 - 1976)==
{| class="toccolours bushist" border="1" cellpadding="3"
|-class="PAST"
!Operator
!Route
!Year
!Date
!Service changes
|-
!rowspan="2"|STC
!Lor 1 Toa Payoh ↔ South Canal (Apr - Aug 1971)
|rowspan="3"|1971
|11 April
|Introduced between Lor 1 Toa Payoh Ter and Sth Canal Ter under 1971 Bus Reorganisation.
|-
!rowspan="5"|Toa Payoh ↔ South Canal (Aug 1971 - 1976)
|2 August
|Amended to Toa Payoh Town Ctr Ter.
|-
!rowspan="2"|ABC
|6 December
|Operations transferred to ABC.
|-
|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.
|-
!rowspan="2"|{{SBS}}
|1974
|24 February
|Amended to ply Grange Rd and Orchard Blvd with the conversion of Orchard Rd to one-way traffic, skipping Orchard Rd.
|-
|1976
|{{TBC}}
|Discontinued.
|}

==Service 142 (since 1984) {{WAB}}==
{| class="toccolours bushist" border="1" cellpadding="3"
|-class="BUS"
!Operator
!Route
!Year
!Date
!Service changes
|-
!rowspan="8"|{{SBS}}
!rowspan="4"|Potong Pasir ↺ Toa Payoh (1984 - 1989)
|1984
|25 November
|Introduced between Potong Pasir Ter and Toa Payoh Int (Loop).
|-
|rowspan="2"|1985
|5 May
|Enhanced to ply Potong Pasir Ave 2 and Potong Pasir Ave 3 before terminating at Potong Pasir Ter.
|-
|15 December
|Amended to ply Jln Toa Payoh and Lor 2 Toa Payoh towards Toa Payoh Int with the partial closure of Kim Keat Ave.
|-
|1987
|6 July
|Last bus from Potong Pasir Ter extended to 2330 hrs daily.
|-
!rowspan="10"|Toa Payoh ↺ Potong Pasir Ave 1 (since 1989)
|1989
|{{TBC}}
|Amended to start from Toa Payoh Int and loop at Potong Pasir Ave 1.
|-
|1994
|5 March
|Amended to ply Kim Keat Lk and Lor 6 Toa Payoh towards Toa Payoh Int.
|-
|rowspan="2"|1998
|rowspan="2"|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.
|-
!rowspan="6"|{{SBST}}<br>(Current)
|2002
|19 May
|Amended to Toa Payoh Integrated Transport Hub.
|-
|2003
|20 June
|Serves new pair of bus stops outside Potong Pasir Stn along Upp Serangoon Rd.
|-
|2006
|16 April
|Serves new bus stop outside Blk 120 along Potong Pasir Ave 1.
|-
|2008
|{{TBC}}
|Last bus extended to 0005 hrs daily.
|-
|2009
|26 October
|{{DWAB}}
|-
|2011
|4 September
|Amended to skip Bendemeer Rd, Whampoa Nth and Serangoon Rd towards Toa Payoh Int with the permanent closure of Whampoa Nth.
|}

==Short Trip 142A {{WAB}}==
{| class="toccolours bushist" border="1" cellpadding="3"
|-class="BUS"
!Operator
!Route
!Year
!Date
!Service changes
|-
!{{SBST}}<br>(Current)
!Toa Payoh → Potong Pasir Ave 1 → Upp Serangoon Rd (since 2018)
|2018
|24 December
|Introduced from Toa Payoh Int to Upp Serangoon Rd (Sant Ritz) during morning peak hours on weekdays. Wheelchair-accessible at launch.
|}

==Service 143 {{WAB}}==
{| class="toccolours bushist" border="1" cellpadding="3"
|-class="BUS"
!Operator
!Route
!Year
!Date
!Service changes
|-
!rowspan="2"|STC
!Lor 6 Toa Payoh ↔ Jurong Rd 16.2 km Mkt (Apr - Aug 1971)
|rowspan="3"|1971
|11 April
|Introduced between Lor 6 Toa Payoh Ter and Jurong Rd 16.2 km Mkt Ter under 1971 Bus Reroganisation.
|-
!rowspan="4"|Toa Payoh ↔ Jurong Rd 16.2 km Mkt (Aug 1971 - 1981)
|2 August
|Amended to Toa Payoh Town Ctr Ter.
|-
!rowspan="2"|ABS
|6 December
|Operations transferred to ABS.
|-
|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.
|-
!rowspan="18"|{{SBS}}
|1974
|24 February
|Amended to ply Grange Rd, Orchard Blvd and Paterson Rd towards Toa Payoh Town Ctr Ter with the conversion of Orchard Rd to one-way traffic.
|-
!rowspan="18"|Toa Payoh ↔ Teban Gardens (1981 - 2002)
|rowspan="2"|1981
|1 February
|Amended to Jurong Depot.
|-
|19 April
|Amended to ply Pandan Gardens and Teban Gdns Rd.
|-
|1982
|24 May
|Amended to ply West Coast Highway.
|-
|1983
|26 December
|Amended to Toa Payoh Int.
|-
|rowspan="3"|1987
|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.
|-
|rowspan="2"|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.
|-
|1988
|20 March
|Amended to ply New Bridge Rd, skipping Upp Pickering St, Sth Bridge Rd and Neil Rd.
|-
|rowspan="2"|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 Toa Payoh Int, skipping Tank Rd.
|-
|1995
|7 May
|Amended to ply Orchard Turn.
|-
|1997
|7 December
|Amended to ply Upp Pickering St, Sth Bridge Rd and Neil Rd with the partial closure of New Bridge Rd to facilitate the construction of Chinatown MRT station on the North East MRT Line.
|-
|1998
|31 May
|Amended to Toa Payoh Temp Int.
|-
|rowspan="2"|1999
|20 September
|Serves new pair of bus stops outside and opposite West Bay Resort Condo along West Coast Rd.
|-
|{{TBC}}
|Skips a pair of removed bus stops outside and opposite Wishart Rd along Telok Blangah Rd.
|-
|2000
|{{TBC}}
|Last bus from Teban Gdns Ter extended to 2400 hrs on Saturdays.
|-
|2001
|{{TBC}}
|Amended to ply West Coast Rd and Penjuru Rd with the partial closure of Teban Gardens Rd.
|-
!rowspan="14"|{{SBST}}
|rowspan="6"|2002
|20 April
|Amended to ply the reinstated New Bridge Rd, skipping Upp Pickering St, Sth Bridge Rd and Neil Rd.
|-
!rowspan="19"|Toa Payoh ↔ Jurong East (since 2002)
|12 May
|Integrated with Service 331 and extended to Jurong East Int.
|-
|19 May
|Amended to Toa Payoh Integrated Transport Hub.
|-
|7 July
|Skips the bus stop outside Orchard Emerald along Orchard Rd.
|-
|{{TBC}}
|Skips removed bus stop opposite ITE Pasir Panjang along Telok Blangah Rd.
|-
|17 November
|Amended to ply Pandan Gdns.
|-
|2004
|{{TBC}}
|First bus from Jurong East Int brought forward to 0525 hrs on weekdays and Saturdays.
|-
|rowspan="2"|2005
|3 April
|Serves 2 new bus stops opposite Blks 34/35 and opposite Blk 47 along West Coast Rd.
|-
|2 July
|Amended to ply Grange Rd and Orchard Lk with the partial closure of Somerset Rd.
|-
|2006
|29 October
|Serves new bus stop outside VivoCity along Telok Blangah Rd and a relocated bus stop outside Orchard Stn along Orchard Turn.
|-
|2007
|17 December
|{{DWAB}}
|-
|2008
|7 December
|Skips removed bus stop opposite Temenggong D Mque along Telok Blangah Rd.
|-
|2011
|17 December
|Amended to Jurong East Temp Int.
|-
|2013
|29 December
|Serves new bus stop outside Outram Pk Stn along New Bridge Rd.
|-
!rowspan="6"|{{TTS}}<br>(Current)
|2016
|12 June
|Operations transferred to Tower Transit Singapore.
|-
|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.
|-
|2020
|6 December
|Amended to relocated Jurong East Temp Int and serve new bus stop before Jurong East Stn along Jurong Gateway Rd.
|-
|rowspan="3"|2023
|rowspan="2"|8 January
|Amended to ply realigned Teban Gdns Rd with the permanent partial closure of Teban Gdns Rd to facilitate the construction of Pandan Reservoir MRT station on the Jurong Region MRT Line, skipping the bus stop before Pandan Gdns along Jurong Town Hall Rd.
|-
|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 143A (2002 - 2014) {{WAB}}==
{| class="toccolours bushist" border="1" cellpadding="3"
|-class="PAST"
!Operator
!Year
!Date
!Service changes
|-
!rowspan="4"|{{SBST}}
|2002
|12 May
|Introduced from Jurong East Int to Teban Gdns Rd (Bef Hasanah Mque), operating after the last bus of Service 143 from Jurong East Int daily.
|-
|2007
|17 December
|{{DWAB}}
|-
|2011
|17 December
|Amended to Jurong East Temp Int.
|-
|2014
|18 May
|Discontinued with the introduction of Service 143M.
|}

==Service 143M {{WAB}}==
{| class="toccolours bushist" border="1" cellpadding="3"
|-class="BUS"
!Operator
!Route
!Year
!Date
!Service changes
|-
!rowspan="2"|{{SBST}}
!rowspan="7"|Jurong East ↺ Pandan Gardens (since 2014)
|rowspan="2"|2014
|18 May
|{{Intro BSEP|Introduced|Jurong East Temp Int|Pandan Gdns (Loop)}}
|-
|24 August
|Serves additional bus stop outside Blk 411 along West Coast Rd.
|-
!rowspan="5"|{{TTS}}<br>(Current)
|rowspan="2"|2016
|rowspan="2"|12 June
|Operations transferred to Tower Transit Singapore.
|-
|First bus revised to 0525 hrs on Saturdays. Last bus extended to 0105 hrs daily.
|-
|2019
|5 October
|Last bus extended to 0115 hrs daily.
|-
|2020
|6 December
|Amended to relocated Jurong East Temp Int and serve new bus stop before Jurong East Stn along Jurong Gateway Rd.
|-
|2023
|8 January
|Amended to ply realigned Teban Gdns Rd with the permanent partial closure of Teban Gdns Rd to facilitate the construction of Pandan Reservoir MRT station on the Jurong Region MRT Line, skipping the bus stop before Pandan Gdns along Jurong Town Hall Rd.
|}

==Service 144 (1971 - 1982)==
{| class="toccolours bushist" border="1" cellpadding="3"
|-class="PAST"
!Operator
!Route
!Year
!Date
!Service changes
|-
!rowspan="2"|ABS
!Kim Keat Ave ↔ Commonwealth Ave (Apr - Aug 1971)
|rowspan="2"|1971
|11 April
|Introduced between Kim Keat Ave Ter and Commonwealth Ave Ter under 1971 Bus Reorganisation.
|-
!rowspan="7"|Toa Payoh ↔ Commonwealth Ave (Aug 1971 - 1982)
|2 August
|Amended to Toa Payoh Town Ctr Ter.
|-
!rowspan="6"|{{SBS}}
|1974
|24 February
|Amended to ply Grange Rd, Orchard Blvd and Paterson Rd towards Toa Payoh Town Ctr Ter with the conversion of Orchard Rd to one-way traffic.
|-
|1975
|2 February
|Amended to ply new slip road from Tiong Bahru Rd to Outram Rd with the conversion of Seng Poh Rd to one-way traffic.
|-
|rowspan="2"|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.
|-
|1981
|5 July
|Amended to ply Cantonment Rd towards Commonwealth Ave Ter, skipping a portion of Neil Rd and New Bridge Rd.
|-
|1982
|11 April
|Discontinued.
|}

==Service 145 {{WAB}}==
{| class="toccolours bushist" border="1" cellpadding="3"
|-class="BUS"
!Operator
!Route
!Year
!Date
!Service changes
|-
!rowspan="3"|STC
!Lor 1 Toa Payoh ↔ Keppel Harbour (Apr - May 1971)
|rowspan="4"|1971
|11 April
|Introduced between Lor 1 Toa Payoh Ter and Keppel Harbour Ter under 1971 Bus Reorganisation.
|-
!Lor 1 Toa Payoh ↔ Pasir Panjang Rd (May - Aug 1971)
|2 May
|Extended to Pasir Panjang Rd Ter.
|-
!rowspan="5"|Toa Payoh ↔ Pasir Panjang Rd (Aug 1971 - 1981)
|2 August
|Amended to Toa Payoh Town Ctr Ter.
|-
!UBC
|6 December
|Operations transferred to UBC.
|-
!rowspan="13"|{{SBS}}
|1979
|1 August
|Amended to ply Lim Teck Kim Rd and Cantonment Rd with the closure of Tg Pagar Ter.
|-
|1980
|20 January
|Amended to ply Hoe Chiang Rd towards Pasir Panjang Rd Ter, skipping Lim Teck Kim Rd.
|-
|rowspan="2"|1981
|17 May
|Amended to skip Moulmein Green.
|-
!rowspan="5"|Toa Payoh ↔ Kent Ridge (1981 - 1989)
|5 July
|Extended to Kent Ridge Ter.
|-
|1983
|26 December
|Amended to Toa Payoh Int.
|-
|rowspan="3"|1987
|16 February
|First bus from Toa Payoh Int brought forward to 0530 hrs on weekdays and Saturdays.
|-
|27 September
|Amended to ply the extended Eu Tong Sen St towards Toa Payoh Int to facilitate the first stage of road expansion along New Bridge 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.
|-
!rowspan="14"|Toa Payoh ↔ Buona Vista (since 1989)
|1989
|27 August
|Integrated with Service 186 and extended to Buona Vista Ter.
|-
|1998
|31 May
|Amended to Toa Payoh Temp Int.
|-
|1999
|{{TBC}}
|Skips a pair of removed bus stops outside and opposite Wishart Rd along Telok Blangah Rd.
|-
|2000
|{{TBC}}
|Last bus from Buona Vista Ter extended to 2400 hrs on Saturdays.
|-
|2001
|{{TBC}}
|First bus from Toa Payoh Temp Int brought forward to 0530 hrs daily.
|-
!rowspan="9"|{{SBST}}<br>(Current)
|2002
|19 May
|Amended to Toa Payoh Integrated Transport Hub.
|-
|2004
|{{TBC}}
|First bus from Buona Vista Ter brought forward to 0530 hrs on weekdays and Saturdays.
|-
|2005
|{{TBC}}
|Serves additional bus stop outside Clarke Quay Stn along Eu Tong Sen St.
|-
|2006
|29 October
|Serves new bus stop outside VivoCity along Telok Blangah Rd.
|-
|2008
|7 December
|Skips removed bus stop opposite Temenggong D Mque along Telok Blangah Rd.
|-
|2013
|9 June
|{{DWAB}}
|-
|2014
|27 April
|Serves new bus stop outside Queens Condo along Commonwealth Ave.
|-
|2019
|23 June
|Serves new bus stop outside Tower 15 along Hoe Chiang Rd.
|-
|2024
|15 September
|Serves new bus stop along Alexandra Rd opposite Cycle & Carriage.
|}

==Short Trip 145A {{WAB}}==
{| class="toccolours bushist" border="1" cellpadding="3"
|-class="BUS"
!Operator
!Route
!Year
!Date
!Service changes
|-
!rowspan="2"|{{SBST}}<br>(Current)
!rowspan="2"|Tiong Bahru Rd → Henderson Rd (since 2010)
|2010
|28 June
|Introduced from Tiong Bahru Rd (Redhill Stn) to Henderson Rd (Blk 1) during morning peak hours on weekdays.
|-
|2013
|9 June
|{{DWAB}}
|}

==Service 146 (1971 - 1989)==
{| class="toccolours bushist" border="1" cellpadding="3"
|-class="PAST"
!Operator
!Route
!Year
!Date
!Service changes
|-
!rowspan="3"|STC
!Lor 1 Toa Payoh ↔ Keppel Harbour (Apr - May 1971)
|rowspan="4"|1971
|11 April
|Introduced between Lor 1 Toa Payoh Ter and Keppel Harbour Ter under 1971 Bus Reorganisation.
|-
!Lor 1 Toa Payoh ↔ Pasir Panjang Rd (May - Aug 1971)
|2 May
|Extended to Pasir Panjang Rd Ter.
|-
!rowspan="6"|Toa Payoh ↔ Pasir Panjang Rd (Aug 1971 - 1981)
|2 August
|Amended to Toa Payoh Town Ctr Ter.
|-
!rowspan="2"|UBC
|6 December
|Operations transferred to UBC.
|-
|1972
|18 June
|Amended to ply Bendemeer Rd towards Pasir Panjang Rd Ter with the conversion of Serangoon Rd to one-way traffic.
|-
!rowspan="11"|{{SBS}}
|rowspan="2"|1974
|1 October
|Serves merged bus stop outside Sri Srinivasa Perumal Tp along Serangoon Rd.
|-
|8 December
|Amended to ply Cecil St, skipping Robinson Rd.
|-
|1979
|11 February
|Amended to ply the extended Shenton Way towards Pasir Panjang Rd Ter, skipping Parsi Rd and Anson Rd.
|-
!Toa Payoh ↔ Kent Ridge (1981 - 1983)
|1981
|5 July
|Amended to Kent Ridge Ter.
|-
!rowspan="7"|Toa Payoh ↔ Clementi (1983 - 1989)
|rowspan="2"|1983
|rowspan="2"|26 December
|Amended to Toa Payoh Int.
|-
|Integrated with Service 176 and extended to Clementi Int.
|-
|1985
|15 December
|Amended to ply Jln Toa Payoh and Lor 2 Toa Payoh towards Toa Payoh Int with the partial closure of Kim Keat Ave.
|-
|rowspan="3"|1988
|3 January
|Serves new staggered bus stop opposite Treasury Bldg along Shenton Way, skipping the bus stop opposite Marina Hse.
|-
|11 January
|Serves merged bus stop along Ayer Rajah Rd.
|-
|8 March
|Amended to ply Clementi Ave 3 with the abolition of right turning from Clementi Ave 3 to Commonwealth Ave West.
|-
|1989
|27 August
|Integrated with Service 166 and discontinued.
|}

==Service 146 (since 2024) {{WAB}}==
{| class="toccolours bushist" border="1" cellpadding="3"
|-class="BUS"
!Operator
!Route
!Year
!Date
!Service changes
|-
!{{SBST}}<br>(Current)
!Bartley Rd ↺ Bidadari Park Dr (since 2024)
|2024
|25 February
|Introduced between Bartley Rd and Bidadari Pk Dr (Loop). Wheelchair-accessible at launch.
|}

==Service 147 {{WAB}}==
{| class="toccolours bushist" border="1" cellpadding="3"
|-class="BUS"
!Operator
!Route
!Year
!Date
!Service changes
|-
!rowspan="3"|ABS
!Lor 6 Toa Payoh ↔ Commonwealth Ave (Apr - Aug 1971)
|rowspan="2"|1971
|11 April
|Introduced between Lor 6 Toa Payoh Ter and Commonwealth Ave Ter under 1971 Bus Reorganisation.
|-
!rowspan="7"|Toa Payoh ↔ Commonwealth Ave (Aug 1971 - 1982)
|2 August
|Amended to Toa Payoh Town Ctr Ter.
|-
|1972
|18 June
|Amended to ply Bendemeer Rd towards Commonwealth Ave Ter with the conversion of Serangoon Rd to one-way traffic.
|-
!rowspan="27"|{{SBS}}
|1975
|2 February
|Amended to ply new slip road from Tiong Bahru Rd to Outram Rd with the conversion of Seng Poh Rd to one-way traffic.
|-
|1976
|13 June
|Amended to ply Lower Delta Rd, skipping Henderson Rd.
|-
|rowspan="2"|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.
|-
|1980
|13 July
|Amended to ply Commonwealth Ave with the conversion of Queens Circus to a signalised junction, skipping Queensway and Commonwealth Dr.
|-
!Toa Payoh ↔ Buona Vista (1982 - 1983)
|1982
|27 May
|Amended to Buona Vista Ter.
|-
!Buona Vista ↺ Potong Pasir Ave 1 (1983 - 1984)
|1983
|26 December
|Amended to loop at Potong Pasir Ave 1 from Buona Vista Ter.
|-
!rowspan="9"|Jurong East ↔ Potong Pasir (1984 - 1992)
|rowspan="2"|1984
|rowspan="2"|1 July
|Integrated with Service 79, extended to Jurong East Ter and amended to ply Kg Bahru Rd and Jln Bt Merah, skipping Outram Rd, Tiong Bahru Rd and Lower Delta Rd.
|-
|Amended to Potong Pasir Ter.
|-
|rowspan="2"|1985
|5 May
|Enhanced to ply Potong Pasir Ave 2 and Potong Pasir Ave 3 before terminating at Potong Pasir Ter.
|-
|30 June
|Amended to Jurong East Int.
|-
|rowspan="3"|1987
|27 September
|Amended to ply the extended Eu Tong Sen St towards Potong Pasir Ter to facilitate the first stage of road expansion along New Bridge Rd.
|-
|1 November
|Amended to ply Eu Tong Sen St towards Potong Pasir Ter to facilitate the second stage of road expansion along New Bridge Rd.
|-
|13 December
|Serves new staggered bus stop opposite Peninsula Plaza along Nth Bridge Rd, skipping the bus stop outside St Andrew's Cath.
|-
|1988
|20 March
|Amended to ply Upp Cross St and New Bridge Rd, skipping Neil Rd.
|-
|1989
|19 February
|Serves new bus stop outside Blk 135 along Jurong East St 13.
|-
!rowspan="3"|Jurong East ↔ Upp Serangoon (1992 - 1993)
|rowspan="2"|1992
|29 March
|Integrated with Service 83, extended to Upp Serangoon Ter and amended to ply Waterloo St/Bras Basah Rd, Middle Rd, Selegie Rd/Bencoolen St and Serangoon Rd/Jln Besar under TransitLink Network Integration Exercise Phase 6, skipping Lavender St, Crawford St/Kallang Rd and Nth Bridge Rd/Victoria St.
|-
|29 November
|Alternate trips were introduced between Upp Serangoon Ter and Commonwealth Ave West (Clementi Stn) under TransitLink Network Integration Exercise Phase 10.
|-
|rowspan="2"|1993
|11 April
|Amended to ply Victoria St, Hill St and New Bridge Rd, skipping Nth Bridge Rd, Sth Bridge Rd and Upp Cross St.
|-
!Clementi ↔ Upp Serangoon (1993 - 1994)
|5 December
|Shortened to Clementi Int with alternate trips withdrawn under TransitLink Network Integration Exercise Phase 14.
|-
!rowspan="18"|Clementi ↔ Hougang Ctrl (since 1994)
|1994
|17 December
|Amended to Hougang Ctrl Int.
|-
|1997
|7 December
|Amended to ply Upp Pickering St, Sth Bridge Rd and Neil Rd with the partial closure of New Bridge Rd to facilitate the construction of Chinatown MRT station on the North East MRT Line.
|-
|rowspan="3"|1999
|{{TBC}}
|Skips temporarily closed bus stops outside and opposite Sch of Mechanical & Mfg along Commonwealth Ave West.
|-
|rowspan="2"|10 July
|Skips the bus stop outside Plaza By The Pk along Bras Basah Rd.
|-
|Amended to ply Prinsep St, skipping Waterloo St and Middle Rd.
|-
|2000
|{{TBC}}
|Serves additional bus stop after Jln Bt Merah along Kg Bahru Rd.
|-
|2001
|18 October
|Serves reinstated bus stops outside Dover Stn along Commonwealth Ave West.
|-
!rowspan="11"|{{SBST}}<br>(Current)
|rowspan="2"|2002
|20 April
|Amended to ply the reinstated New Bridge Rd, skipping Upp Pickering St, Sth Bridge Rd and Neil Rd.
|-
|{{TBC}}
|Serves new pair of bus stops after Sommerville Rd and after Sunshine Lodge along Upp Serangoon Rd.
|-
|2003
|20 June
|Serves new pair of bus stops outside Potong Pasir Stn along Upp Serangoon Rd.
|-
|2005
|{{TBC}}
|Serves additional bus stop outside Clarke Quay Stn along Eu Tong Sen St.
|-
|rowspan="2"|2006
|29 October
|Amended to Clementi Temp Int.
|-
|30 October
|{{DWAB}}
|-
|rowspan="2"|2011
|16 October
|Amended to ply Middle Rd, Selegie Rd, Prinsep St and Bras Basah Rd with the partial closure of Bencoolen St to facilitate the construction of Bencoolen MRT station on the Downtown MRT Line.
|-
|26 November
|Amended to Clementi Integrated Transport Hub.
|-
|2013
|29 December
|Serves new bus stop outside Outram Pk Stn along New Bridge Rd.
|-
|2016
|11 December
|Amended to ply the reinstated Bencoolen St, skipping Middle Rd, Selegie Rd, Prinsep St and Bras Basah 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.
|}

==Short Trip 147A {{WAB}}==
{| class="toccolours bushist" border="1" cellpadding="3"
|-class="BUS"
!Operator
!Route
!Year
!Date
!Service changes
|-
!{{SBS}}
!Hougang Ctrl → Serangoon Central (2000 - 2003)
|2000
|{{TBC}}
|Introduced from Hougang Ctrl Temp Ter to Serangoon Ctrl (Blk 206) during morning peak hours daily.
|-
!rowspan="6"|{{SBST}}<br>(Current)
!Hougang Ctrl → Bencoolen St (2003 - 2004)
|2003
|{{TBC}}
|Extended to terminate at Bencoolen St (Plaza By The Pk).
|-
!rowspan="5"|Hougang Ctrl → New Bridge Rd (since 2004)
|2004
|{{TBC}}
|Extended to terminate at New Bridge Rd (Opp Pearl's Ctr).
|-
|2006
|30 October
|{{DWAB}}
|-
|2011
|16 October
|Amended to ply Middle Rd, Selegie Rd, Prinsep St and Bras Basah Rd with the partial closure of Bencoolen St to facilitate the construction of Bencoolen MRT station on the Downtown MRT Line.
|-
|2015
|{{TBC}}
|Revised to operate during morning peak hours on weekdays only.
|-
|2016
|11 December
|Amended to ply the reinstated Bencoolen St, skipping Middle Rd, Selegie Rd, Prinsep St and Bras Basah Rd.
|}

==Service 148 (1971 - 1989)==
{| class="toccolours bushist" border="1" cellpadding="3"
|-class="PAST"
!Operator
!Route
!Year
!Date
!Service changes
|-
!rowspan="3"|ABC
!Kim Keat Ave ↔ Commonwealth Ave (Apr - Aug 1971)
|rowspan="2"|1971
|11 April
|Introduced between Kim Keat Ave Ter and Commonwealth Ave Ter under 1971 Bus Reorganisation.
|-
!rowspan="5"|Toa Payoh ↔ Commonwealth Ave (Aug 1971 - 1982)
|2 August
|Amended to Toa Payoh Town Ctr Ter.
|-
|1972
|18 June
|Amended to ply Bendemeer Rd towards Commonwealth Ave Ter with the conversion of Serangoon Rd to one-way traffic.
|-
!rowspan="10"|{{SBS}}
|1975
|6 July
|Amended to ply Jln Kolam Ayer, Kallang Bahru, Boon Keng Rd, Lor 1 Geylang and Sims Ave/Geylang Rd, skipping Lavender St.
|-
|rowspan="2"|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.
|-
!rowspan="7"|Toa Payoh ↔ Buona Vista (1982 - 1989)
|rowspan="2"|1982
|27 May
|Amended to Buona Vista Ter.
|-
|11 June
|Amended to ply Bendemeer Rd and Geylang Bahru, skipping Jln Kolam Ayer.
|-
|rowspan="2"|1983
|1 January
|Amended to ply Woodsville Flyover, skipping Bendemeer Rd, Whampoa Nth and Serangoon Rd.
|-
|26 December
|Amended to Toa Payoh Int.
|-
|1985
|15 December
|Amended to ply Jln Toa Payoh and Lor 2 Toa Payoh towards Toa Payoh Int with the partial closure of Kim Keat Ave.
|-
|1987
|27 September
|Amended to ply Sth Bridge Rd, Nth Canal Rd and Eu Tong Sen St, skipping Upp Circular Rd.
|-
|1989
|27 August
|Integrated with Service 26 and discontinued.
|}

==Service 148 (March - November 1992)==
{| class="toccolours bushist" border="1" cellpadding="3"
|-class="PAST"
!Operator
!Year
!Date
!Service changes
|-
!rowspan="2"|{{SBS}}
|rowspan="2"|1992
|29 March
|Introduced between Clementi Int and Lor 1 Geylang Ter under TransitLink Network Integration Exercise Phase 6.
|-
|29 November
|Discontinued under TransitLink Network Integration Exercise Phase 10.
|}

==Service 149 (1971 - 1980)==
{| class="toccolours bushist" border="1" cellpadding="3"
|-class="PAST"
!Operator
!Route
!Year
!Date
!Service changes
|-
!rowspan="2"|UBC
!Kim Keat Ave ↔ Prince Edward (Apr - Aug 1971)
|rowspan="2"|1971
|11 April
|Introduced between Kim Keat Ave Ter and Prince Edward Ter under 1971 Bus Reorganisation.
|-
!rowspan="10"|Toa Payoh ↔ Prince Edward (Aug 1971 - 1980)
|2 August
|Amended to Toa Payoh Town Ctr Ter.
|-
!rowspan="9"|{{SBS}}
|rowspan="2"|1974
|3 February
|Integrated with Service 149A and amended to ply Lor 6 Toa Payoh, Lor 2 Toa Payoh, Lor 1A Toa Payoh, Lor 1 Toa Payoh, Lor 2 Toa Payoh, Lor 3 Toa Payoh, Lor 4 Toa Payoh, Lor 5 Toa Payoh, Lor 4 Toa Payoh and Lor 1 Toa Payoh under 1974 Bus Rationalisation.
|-
|8 December
|Amended to ply Cecil St, skipping Robinson Rd.
|-
|1975
|21 July
|Amended to ply Stamford Rd, skipping Coleman St and Armenian St.
|-
|1976
|14 March
|Serves new staggered bus stop outside The Cenotaph along Connaught Dr, skipping the bus stop opposite Singapore Cricket Club.
|-
|rowspan="2"|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.
|-
|rowspan="2"|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 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 150 and discontinued.
|}

==Service 149 (1983 - 1993)==
{| class="toccolours bushist" border="1" cellpadding="3"
|-class="PAST"
!Operator
!Year
!Date
!Service changes
|-
!rowspan="8"|{{SBS}}
|rowspan="2"|1983
|25 June
|Introduced between Toa Payoh Town Ctr Ter and Changi Airport PTB (Loop) under Changi Airport Bus Plan 1983.
|-
|26 December
|Amended to Toa Payoh Int.
|-
|1984
|14 September
|Amended to ply Siglap Rd and Siglap Lk towards Changi Airport with the opening of ECP.
|-
|1985
|15 December
|Amended to ply Jln Toa Payoh and Lor 2 Toa Payoh towards Toa Payoh Int with the partial closure of Kim Keat Ave.
|-
|1989
|19 November
|Serves new bus stop outside Kallang Stn along Sims Ave.
|-
|1990
|13 October
|Amended to serve Changi Airport PTB 2.
|-
|1991
|7 July
|Serves new bus stop outside PA Sea Sports Ctr along ECP.
|-
|1993
|5 December
|Integrated with Services 16 and 31 and discontinued under TransitLink Network Integration Exercise Phase 14.
|}

==Service 149A (1971 - 1974)==
{| class="toccolours bushist" border="1" cellpadding="3"
|-class="PAST"
!Operator
!Route
!Year
!Date
!Service changes
|-
!rowspan="2"|UBC
!Lor 1 Toa Payoh ↺ Finlayson Green (Apr - Aug 1971)
|rowspan="2"|1971
|11 April
|Introduced between Lor 1 Toa Payoh Ter and Finlayson Green (Loop) under 1971 Bus Reorganisation.
|-
!rowspan="2"|Toa Payoh ↺ Finlayson Green (Aug 1971 - 1974)
|2 August
|Amended to Toa Payoh Town Ctr Ter.
|-
!{{SBS}}
|1974
|3 February
|Integrated with Service 149 and discontinued under 1974 Bus Rationalisation.
|}

==Service 150 (1971 - 1990)==
{| class="toccolours bushist" border="1" cellpadding="3"
|-class="PAST"
!Operator
!Route
!Year
!Date
!Service changes
|-
!rowspan="2"|UBC
!Lor 1 Toa Payoh ↔ Crawford St (Apr - Aug 1971)
|rowspan="2"|1971
|11 April
|Introduced between Lor 1 Toa Payoh Ter and Crawford St Ter under 1971 Bus Reorganisation.
|-
!rowspan="7"|Toa Payoh ↔ Crawford St (Aug 1971 - 1990)
|2 August
|Amended to Toa Payoh Town Ctr Ter.
|-
!rowspan="6"|{{SBS}}
|rowspan="2"|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) {{WAB}}==
{| class="toccolours bushist" border="1" cellpadding="3"
|-class="BUS"
!Operator
!Route
!Year
!Date
!Service changes
|-
!{{SBST}}<br>(Current)
!Eunos ↺ Marine Terrace (since 2016)
|2016
|20 March
|Introduced between Eunos Int and Marine Terr (Loop) under the LTA's Bus Service Enhancement Programme (BSEP), operating between 0600 hrs and 2330 hrs daily. Wheelchair-accessible at launch.
|}

[[Category: Buses]]