History of Services 181 - 190

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Service 181 (1971 - 1998)

Operator Year Date Service changes
UBC 1971 11 April Introduced between Bt Timah Ter and Commonwealth Ave Ter under 1971 Bus Reorganisation.
28 September Amended to ply the extended Ganges Ave towards Bt Timah Ter.
8 November Extended to Upp Bt Timah Rd 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.
SBS 1974 3 February Extended to Crawford St Ter under 1974 Bus Rationalisation.
1979 30 December Amended to ply Jln Anak Bt towards Crawford St Ter with the partial conversion of Upp Bt Timah Rd to one-way traffic.
1980 14 December Extended to Woodlands Town Ter.
1981 29 November Amended to Woodlands Int.
Trans Island 1983 4 September Operations transferred to TIBS.
1987 27 September Amended to ply the extended Eu Tong Sen St towards Crawford St Ter to facilitate the first stage of road expansion along New Bridge Rd.
1 November Amended to ply Eu Tong Sen St towards Crawford St Ter to facilitate the second stage of road expansion along New Bridge Rd.
13 December Serves new staggered bus stop opposite Peninsula Plaza along North Bridge Rd, skipping the bus stop outside St Andrew's Cathedral.
1988 28 February Revised to operate on weekdays and Saturdays only with the introduction of Service 181#.
20 March Amended to ply Upp Cross St and New Bridge Rd, skipping Neil Rd.
1990 22 July Serves additional bus stop outside Ellenborough Market along Eu Tong Sen St.
1996 4 February Amended to Woodlands Reg Int.
1997 7 December Amended to ply South 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.
1998 27 December Extended to Lor 1 Geylang Ter and re-numbered Service 961.

Service 181 (since 2005) Handicapped/disabled access

Operator Year Date Service changes
SBS Transit
(Current)
2005 9 January Introduced between Boon Lay Int and Jurong West Ave 3 (Loop).
2006 18 June Amended to Boon Lay Temp Int.
2008 15 June Serves new pair of bus stops outside Blk 670A and outside Blk 678D along Jurong West St 64.
2009 27 December Amended to Boon Lay Integrated Transport Hub.
2010 18 October Designated wheelchair-accessible bus service (WAB).

Service 181#

Operator Year Date Service changes
Trans Island 1988 28 February Introduced between Woodlands Int and Crawford St Ter as an alternate route of Service 181 via Marina Centre, operating on Sundays and Public Holidays.
20 March Amended to ply Upp Cross St and New Bridge Rd, skipping Neil Rd.
1990 22 July Serves additional bus stop outside Ellenborough Market along Eu Tong Sen St.
1996 4 February Amended to Woodlands Reg Int.
1997 7 December Amended to ply South 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.
1998 27 December Extended to Lor 1 Geylang Ter and re-numbered Service 961#.

Service 181M Handicapped/disabled access

Operator Year Date Service changes
SBS Transit
(Current)
2016 21 March Introduced between Boon Lay Integrated Transport Hub and Jurong West St 23 (Loop) as a morning peak hour service on weekdays (except school holidays).

Service 182 (1971 - 1996)

Operator Year Date Service changes
UBC 1971 11 April Introduced between Bt Timah Ter and Jln Besi Ter under 1971 Bus Reorganisation.
TBC Extended to Benoi Rd Ter.
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.
SBS 1974 3 February Amended to loop at Shenton Way from Bt Timah Ter under 1974 Bus Rationalisation.
24 February Amended to ply Grange Rd, Orchard Blvd and Paterson Rd towards Bt Timah Ter with the conversion of Orchard Rd to one-way traffic.
8 December Amended to ply Cecil St, skipping Robinson Rd.
1976 6 June Extended to Admiralty Rd Ter and amended to New Bridge Rd Ter.
1979 30 December Amended to ply Jln Anak Bt towards New Bridge Rd Ter with the partial conversion of Upp Bt Timah Rd to one-way traffic.
Trans Island 1983 7 August Operations transferred to TIBS.
1987 6 June Amended to the relocated New Bridge Rd Ter.
27 September Amended to ply the extended Eu Tong Sen St towards Marsiling Ter to facilitate the first stage of road expansion along New Bridge Rd.
1 November Amended to ply Eu Tong Sen St towards Marsiling 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.
1988 20 March Amended to ply Upp Cross St and New Bridge Rd, skipping Neil Rd.
1992 3 May Amended to Shenton Way Ter under TransitLink Network Integration Exercise Phase 7.
TBC Amended to ply Orchard Link, skipping Grange Rd.
1995 TBC Amended to ply Orchard Turn.
1996 4 February Amended to Woodlands Reg Int.
10 March Withdrawn under Woodlands MRT Rationalisation.

Service 182 (since 1998) Handicapped/disabled access

Operator Year Date Service changes
SBS 1998 5 July Introduced between Jurong East Int and Tuas Ter, calling at Tuas Checkpoint at selected timings only.
2001 25 February Shortened to Boon Lay Int.
SBS Transit
(Current)
2002 26 May Integrated with Service 183, extended to loop at Tuas South Ave 9 and amended to ply Jurong West St 64, Boon Lay Way, Upp Jurong Rd and PIE, skipping Jln Boon Lay.
2004 19 January Serves all bus stops along Upp Jurong Rd.
2005 7 August Serves new pair of bus stops outside and opposite Sin Lian Heng Construction along Tuas South Ave 3.
2006 18 June Amended to Boon Lay Temp Int.
2007 25 November Serves 2 new pairs of bus stops before Tuas South Ave 2, outside LTH Distripark, before and after Tuas South Ave 2 along Tuas South Ave 3.
2009 27 December Amended to Boon Lay Integrated Transport Hub.
2013 30 September Designated wheelchair-accessible bus service (WAB).
2015 28 November Shortened to Joo Koon Integrated Transport Hub.
2016 4 January First bus brought forward to 0545 hrs daily.

Service 182X/182M Handicapped/disabled access

Operator Year Date Service changes
SBS 1998 5 July Introduced between Jurong East Int and Tuas Ter as an alternate route of Service 182 during off peak periods, skipping Tuas Checkpoint in both directions.
2001 25 February Shortened to Boon Lay Int.
SBS Transit
(Current)
2002 26 May Integrated with Service 183, extended to loop at Tuas South Ave 9 and amended to ply Jurong West St 64, Boon Lay Way, Upp Jurong Rd and PIE, skipping Jln Boon Lay.
2004 19 January Serves all bus stops along Upp Jurong Rd.
2005 7 August Serves new pair of bus stops outside and opposite Sin Lian Heng Construction along Tuas South Ave 3.
2006 18 June Amended to Boon Lay Temp Int.
2008 28 January Re-numbered Service 182M.
11 February Serves 2 new pairs of bus stops before Tuas South Ave 2, outside LTH Distripark, before and after Tuas South Ave 2 along Tuas South Ave 3.
2009 27 December Amended to Boon Lay Integrated Transport Hub.
2013 26 August Amended to call at Tuas Checkpoint towards Boon Lay Integrated Transport Hub only.
30 September Designated wheelchair-accessible bus service (WAB).
2015 28 November Shortened to Joo Koon Integrated Transport Hub.

Service 183 (1974 - 1988)

Operator Year Date Service changes
SBS 1974 3 February Introduced between Benoi Rd Ter and South Canal Ter under 1974 Bus Rationalisation.
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.
1978 1 June Amended to Jurong Int and amended to New Bridge Rd Ter.
1987 6 April Skips abolished bus stop before College Rd along Outram Rd.
6 June Amended to the relocated New Bridge Rd Ter.
1 November Amended to ply Eu Tong Sen St towards Jurong Int to facilitate the second stage of road expansion along New Bridge Rd.
1988 11 January Serves merged bus stop along Ayer Rajah Rd.
18 December Withdrawn.

Service 183 (1998 - 2002)

Operator Year Date Service changes
SBS 1998 5 July Introduced between Tuas Ter and Tuas South Ave 6 (Loop).
2001 11 February Extended to loop at Tuas South Ave 9, skipping Tuas South Ave 6.
SBS Transit 2002 26 May Integrated with Service 182 and withdrawn.

Service 183 (since 2004) Handicapped/disabled access

Operator Year Date Service changes
SBS Transit 2004 22 August Introduced between Jurong East Int and Clementi Rd (Loop).
2005 3 October Extended to loop at Science Park Rd.
2008 2 December Designated wheelchair-accessible bus service (WAB).
2011 17 December Amended to Jurong East Temp Int.
Template:Tower Transit Singapore
(Current)
2016 26 June Operations transferred to Tower Transit Singapore.
2020 6 December Amended to relocated Jurong East Temp Int and serve new bus stop before Jurong East Stn along Jurong Gateway Rd.

Short Trip 183A Handicapped/disabled access

Operator Year Date Service changes
SBS Transit 2005 12 December Introduced between Commonwealth Ave West (Clementi Stn) and Science Pk Rd (Loop) during morning peak hours on weekdays.
2008 2 December Designated wheelchair-accessible bus service (WAB).
2009 TBC Extended to start from Jurong East Int.
2011 17 December Amended to Jurong East Temp Int.
2012 TBC Withdrawn.

Short Trip 183B Handicapped/disabled access

Operator Year Date Service changes
SBS Transit 2010 16 August Introduced between Jurong East Int and Toh Tuck Ave (Ulu Pandan R.I. Plant) during morning peak hours on weekdays. Wheelchair-accessible at launch.
2011 17 December Amended to Jurong East Temp Int.
Template:Tower Transit Singapore
(Current)
2016 26 June Operations transferred to Tower Transit Singapore.
2020 6 December Amended to relocated Jurong East Temp Int.

Service 184 (1978 - 1990)

Operator Year Date Service changes
SBS 1978 TBC Introduced between Telok Blangah Way Ter and Boon Lay Gardens Ter.
1 June Amended to Jurong Int.
1980 28 September Amended to Bt Merah Int.
1981 15 February Amended to skip Telok Blangah Way and Telok Blangah Cres in both directions.
1987 2 August Amended to ply West Coast Highway, skipping Upp Ayer Rajah Rd and Clementi Rd.
1990 1 July Integrated with Service 176 and withdrawn with the opening of Boon Lay Int.

Service 184 (since 1994) Handicapped/disabled access

Operator Year Date Service changes
SBS 1994 3 July Introduced between Bt Panjang Ter and Commonwealth Ave West (Loop).
Trans Island 1995 2 July Operations transferred to TIBS.
1999 26 December Amended to Bt Panjang Int.
2003 12 October Serves the bus stop opposite Bt Timah Plaza along Jln Anak Bt with the abolition of the bus stop under the PIE Flyover.
SMRT Buses
(Current)
2010 23 May Skips temporarily abolished bus stop outside Assumption Voc Inst along Upp Bt Timah Rd to facilitate the construction of Cashew MRT station along the Downtown MRT Line.
2011 3 July Serves additional pair of bus stops opposite Ministry of Defence and before Cashew Rd along Upp Bt Timah Rd.
2012 16 December Amended to start from and terminate at Bt Panjang Rd with the opening of Bt Panjang Temp Bus Pk and the closure of Bt Panjang Int.
2015 1 March Serves reinstated bus stop outside Assumption Pathway Sch along Upp Bt Timah Rd, skipping a pair of bus stops opposite Ministry of Defence and before Cashew Rd.
2017 4 September Serves additional pair of bus stops outside and opposite Ten Mile Junction Stn along Woodlands Rd.
17 December Designated wheelchair-accessible bus service (WAB).
2021 23 January Extended to Gali Batu Ter, serving 2 additional pairs of bus stops after KJE Slip Rd, Blk 632 CP, opposite Blk 632 CP and opposite Blk 635A along Woodlands Rd.

Service 185 (1979 - 1985)

Operator Year Date Service changes
SBS 1979 16 July Introduced between Clementi Ave 3 Ter and North Buona Vista Rd (Loop).
1980 28 September Extended to loop at Bt Merah Int.
16 November Amended to Clementi Int.
1985 28 April Integrated with Service 92 and withdrawn.

Service 185 (1988 - 2003)

Operator Year Date Service changes
SBS 1988 31 July Introduced between Choa Chu Kang Ter and Shenton Way Ter.
25 August Amended to ply Choa Chu Kang Ave 1 with the completion of the road junction between Teck Whye Ave and Choa Chu Kang Ave 1.
1989 28 May Amended to ply Commonwealth Ave.
1990 10 March Extended to interim terminal along Choa Chu Kang Ave 4.
8 April Amended to Choa Chu Kang Int.
1991 28 April Amended to ply Bt Batok East Ave 2 under TransitLink Network Integration Exercise Phase 4, skipping Bt Batok East Ave 3.
1993 3 January Shortened to loop at Jln Anak Bt from Choa Chu Kang Int with the introduction of Service 186 under TransitLink Network Integration Exercise Phase 11.
1997 TBC Serves new bus stop outside Lot 1 Shoppers' Mall along Choa Chu Kang Ave 4.
Trans Island 1999 29 August Operations transferred to TIBS.
2003 TBC Serves new bus stop outside Goh & Goh Bldg along Jln Jurong Kechil.
27 July Integrated with Service 989 to form Service 985 and withdrawn.

Service 185 (since 2006) Handicapped/disabled access

Operator Year Date Service changes
SBS Transit
(Current)
2006 26 December Introduced between Soon Lee Bus Park and Buona Vista Ter.
2007 5 August Serves new pair of bus stops outside and opposite Soon Lee Depot along Soon Lee Rd.
2008 14 July Designated wheelchair-accessible bus service (WAB).
29 December Last bus from Soon Lee Bus Park extended to 2315 hrs daily.
2009 18 May First bus from Soon Lee Bus Park brought forward to 0545 hrs daily.

Service 186 (1977 - 1989)

Operator Year Date Service changes
SBS 1977 7 November Introduced between Clementi Ave 3 Ter and Tg Pagar Ter.
1978 5 June Amended to ply Commonwealth Ave West with the relocation of Clementi Ave 3 Ter, skipping Clementi Ave 2.
1979 1 August Amended to Anson Rd Ter.
1980 16 November Amended to Clementi Int.
1985 27 January Amended to Prince Edward Ter with the closure of Anson Rd Ter.
1987 28 June Amended to Shenton Way Ter.
1988 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 145 and withdrawn.

Service 186 (since 1993) Handicapped/disabled access

Operator Year Date Service changes
SBS 1993 3 January Introduced between Shenton Way Ter and Farrer Rd (Loop) under TransitLink Network Integration Exercise Phase 11.
4 April Extended to St. Michael's Ter under TransitLink Network Integration Exercise Phase 12.
2000 TBC Serves new bus stop after Shenton Way along Palmer Rd.
SBS Transit
(Current)
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.
2012 30 September Designated wheelchair-accessible bus service (WAB).
2014 27 April Serves new bus stop outside Queens Condo along Commonwealth Ave.
2017 25 June Amended to the relocated Shenton Way Ter.

Service 187 (1981 - 1983)

Operator Year Date Service changes
SBS 1981 16 February Introduced between Bt Merah Int and Empress Pl (Loop), operating on weekdays and Saturdays only.
19 May Converted to peak hour service.
1983 14 November Withdrawn.

Service 187 (since 1988) Handicapped/disabled access

Operator Year Date Service changes
SBS 1988 10 July Introduced between Bt Panjang Ter and Jurong Int.
1990 7 January Serves new pair of bus stops outside and opposite Bt Batok Driving Ctr along Bt Batok West Ave 5.
1 July Amended to Boon Lay Int.
Trans Island 1995 17 September Operations transferred to TIBS.
1996 10 March Extended to Woodlands Reg Int under Woodlands MRT Rationalisation.
SMRT Buses
(Current)
2006 30 April Serves new pair of bus stops outside Blk 336 and opposite Blk 334 along Bt Batok West Ave 7.
18 June Amended to Boon Lay Temp Int.
2009 27 December Amended to Boon Lay Integrated Transport Hub.
2012 29 April Designated wheelchair-accessible bus service (WAB).
2016 12 March Amended to Woodlands Temp Int.
2021 13 June Amended to Woodlands Integrated Transport Hub.

Service 188 (1977 - 1987)

Operator Year Date Service changes
SBS 1977 17 October Introduced between Ulu Pandan Ter and Shenton Way (Loop).
1979 11 February Amended to ply the extended Shenton Way towards Ulu Pandan Ter, skipping Parsi Rd and Anson Rd.
1980 20 January Amended to ply Spottiswoode Park Rd with the partial conversion of Cantonment Rd to one-way traffic.
1981 11 October Serves new staggered bus stop outside Tunas Bldg along Anson Rd, skipping the bus stop outside Intl Plaza.
1987 6 April Skips abolished bus stop before College Rd along Outram Rd.
5 July Withdrawn.

Service 188 (1988 - 1991)

Operator Year Date Service changes
SBS 1988 10 July Introduced between Jurong Int and Jurong West St 91 (Loop).
1989 17 December Amended to ply Jurong West St 72 and Jurong West Ave 5, skipping Pioneer Rd North.
1990 1 July Amended to Jurong Bus Park with the opening of Boon Lay Int.
1991 20 January Withdrawn under TransitLink Network Integration Exercise Phase 2.

Service 188 (since 1999) Handicapped/disabled access

Operator Year Date Service changes
SBS 1999 7 March Introduced between Choa Chu Kang Int and World Trade Ctr Ter.
TBC Skips abolished pair of bus stops outside and opposite Wishart Rd along Telok Blangah Rd.
Trans Island 26 December Operations transferred to TIBS.
2002 TBC Skips abolished bus stop opposite ITE Pasir Panjang along Telok Blangah Rd.
SMRT Buses
(Current)
2006 30 April Serves new pair of bus stops outside Blk 336 and opposite Blk 334 along Bt Batok West Ave 7.
2015 22 March Designated wheelchair-accessible bus service (WAB).
2018 16 December Amended to new Choa Chu Kang Int.

Short Trip 188A

Operator Year Date Service changes
SMRT Buses 2010 5 July Introduced from Choa Chu Kang Int to Choa Chu Kang Gr (ITE College West) during morning peak hours on weekdays.
13 September Withdrawn.

Service 189 Handicapped/disabled access

Operator Year Date Service changes
SBS 1974 3 February Re-numbered from Service 193A as a service between Commonwealth Ave Ter and South Canal Rd Ter under 1974 Bus Rationalisation.
8 December Amended to ply Cecil St, skipping Robinson Rd.
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.
1977 29 August Amended to ply Holland Ave, Holland Dr and North Buona Vista Rd towards Commonwealth Ave Ter.
1978 22 January Amended to ply Commonwealth Ave, Queensway, Commonwealth Dr, Commonwealth Ave and Queen's Circus with the conversion of Farrer Circus into a traffic-signal controlled junction.
1979 15 January Amended to loop at Empress Pl and amended to ply Jln Bt Merah, Kg Bahru Rd and New Bridge Rd/Neil Rd, skipping Commonwealth Dr, Tiong Bahru Rd, Outram Rd, Cross St, Upp Cross St, New Bridge Rd and North Canal Rd.
11 February Amended to ply the extended Shenton Way towards Commonwealth Ave Ter, skipping Parsi Rd and Anson Rd.
1980 20 January Amended to ply Spottiswoode Park Rd with the partial conversion of Cantonment Rd to one-way traffic.
1982 27 May Amended to Buona Vista Ter.
1985 24 November Extended to Bt Batok Ter and Marina Ctr Ter.
1986 30 November Amended to the relocated Marina Ctr Ter along Raffles Blvd.
1987 27 September Amended to Bt Batok Int.
1 November Amended to ply Eu Tong Sen St towards Marina Ctr Ter to facilitate the second stage of road expansion along New Bridge Rd.
1991 28 April Shortened to loop at Clementi West St 2, integrated with Service 366 and amended to ply Bt Batok Central, Bt Batok Ave 1, Bt Batok East Ave 6 and Bt Batok St 23 under TransitLink Network Integration Exercise Phase 4.
1995 6 May Extended to loop at West Coast Ferry Ter, skipping Clementi West St 2.
1996 TBC Amended to ply PIE and Clementi Ave 6, skipping Toh Tuck Ave.
1999 TBC Serves new pair of bus stops outside and opposite West Bay Resort Condo along West Coast Rd.
Trans Island 2000 18 June Operations transferred to TIBS.
2001 15 April Shortened to loop at Kent Ridge Ter.
SMRT Buses 2009 1 June Designated wheelchair-accessible bus service (WAB).
2014 23 November Amended to loop at Clementi Ave 1 with the introduction of Service 201, skipping West Coast Rd and Kent Ridge Ter.
Template:Tower Transit Singapore
(Current)
2016 29 May Operations transferred to Tower Transit Singapore.

Service 189A (2001 - 2003)

Operator Year Date Service changes
Trans Island 2001 15 April Introduced between Bt Batok Int and Harbour Dr (Loop), operating at selected timings only.
2003 4 May Withdrawn.

Short Trip 189A (since 2009) Handicapped/disabled access

Operator Year Date Service changes
SMRT Buses 2009 5 January Introduced from Bt Batok Int to Bt Batok St 23 (Opp Midview Bldg) during morning peak hours on weekdays.
1 June Designated wheelchair-accessible bus service (WAB).
2011 12 June Extended to operate after the last bus of Service 189 daily.
Template:Tower Transit Singapore
(Current)
2016 29 May Operations transferred to Tower Transit Singapore.
2019 5 October Last bus extended to 0110 hrs daily.

Service 190 (April - May 1971)

Operator Year Date Service changes
ABC 1971 11 April Introduced between Delta Circus Ter and South Canal Ter under 1971 Bus Reorganisation.
25 April Integrated with Service 193/193A and withdrawn.

Service 190 (1974 - 1979)

Operator Year Date Service changes
SBS 1974 3 February Re-numbered from Service 191A between Jln Bt Merah Ter and Prince Edward Rd Ter under 1974 Bus Rationalisation.
24 February Amended to ply Grange Rd, Orchard Blvd and Paterson Rd towards Jln Bt Merah Ter with the conversion of Orchard Rd to one-way traffic.
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.
1977 19 June Amended to ply Orchard Blvd and Grange Rd towards Jln Bt Merah Ter with the full conversion of Orchard Rd to one-way traffic.
1979 11 February Amended to ply the extended Shenton Way, Palmer Rd and Anson Rd, skipping Parsi Rd.
25 November Withdrawn.

Service 190 (since 1988) Handicapped/disabled access

Operator Year Date Service changes
SBS 1988 10 July Introduced between Bt Panjang Ter and New Bridge Rd Ter.
1990 16 December Integrated with Service 179 and extended to Choa Chu Kang Int.
1992 TBC Amended to ply Orchard Link, skipping Grange Rd.
1993 3 January Amended to ply PIE and Whitley Rd under TransitLink Network Integration Exercise Phase 11, skipping Jln Anak Bt/Upp Bt Timah Rd and Dunearn Rd/Bt Timah Rd.
11 April Amended to ply Victoria St, Hill St and New Bridge Rd, skipping North Bridge Rd, South Bridge Rd and Upp Cross St.
1995 TBC Amended to ply Orchard Turn.
1997 7 December Amended to ply Upp Pickering St, South Bridge Rd and Kreta Ayer Rd with the partial closure of New Bridge Rd to facilitate the construction of Chinatown MRT station on the North East MRT Line.
Trans Island 1999 25 July Operations transferred to TIBS.
26 December Amended to ply Choa Chu Kang Ave 4, Choa Chu Kang Dr and Teck Whye Ave under Bukit Panjang LRT Rationalisation, skipping Choa Chu Kang Way.
2000 TBC Serves additional bus stop opposite Blk 333 along Kreta Ayer Rd.
2002 20 April Amended to ply the reinstated New Bridge Rd, skipping Upp Pickering St, South Bridge Rd and Kreta Ayer Rd.
7 July Skips the bus stop outside Orchard Emerald along Orchard Rd.
SMRT Buses
(Current)
2005 TBC Serves additional bus stop outside Clarke Quay Stn along Eu Tong Sen St.
2 July Amended to ply Grange Rd and Orchard Link with the partial closure of Somerset Rd.
2006 29 October Serves relocated bus stop outside Orchard Stn along Orchard Turn.
2015 14 June Designated wheelchair-accessible bus service (WAB).
2018 10 March Extended to Kg Bahru Ter with the closure of New Bridge Rd Ter.
16 December Amended to new Choa Chu Kang Int.
2021 15 February First bus from Choa Chu Kang Int brought forward to 0530 hrs on weekdays.

Short Trip 190A Handicapped/disabled access

Operator Year Date Service changes
Trans Island 2000 TBC Introduced from Choa Chu Kang Int to Orchard Rd (Dhoby Ghaut Stn) during morning peak hours on weekdays.
2002 7 July Skips the bus stop outside Orchard Emerald along Orchard Rd.
SMRT Buses
(Current)
2015 14 June Designated wheelchair-accessible bus service (WAB).
2018 16 December Amended to new Choa Chu Kang Int.