History of Express Services

SBS/SBS Transit

Service 501

Year	Date	Service changes
1997	5 May	Introduced between Hougang Central Int and Penang Rd (AM Peak) and between Anson Rd and Hougang Central Int (PM Peak) as a peak hour one-directional service.
	22 December	Amended to loop at Penang Rd and enhanced to operate an alternate route between Hougang Central Int and Temasek Ave (loop) during evening off peak hours on weekdays and Saturdays and throughout the day on Sundays and Public Holidays.
1998	24 May	Amended to Hougang Central Temp Ter.
2000	3 September	Extended to Sengkang Ter.
2001	28 April	Amended to Sengkang Temp Int.
2003	18 January	Amended to Sengkang Integrated Transport Hub.
	28 July	Withdrawn under North East MRT Line Rationalisation Phase 2.

Service 502

Year	Date	Service changes
1997	5 May	Introduced between Hougang Central Int and Boon Lay Int.
1998	24 May	Amended to Hougang Central Temp Ter.
2000	3 September	Extended to Sengkang Ter.
2001	28 April	Amended to Sengkang Temp Int.
2003	18 January	Amended to Sengkang Integrated Transport Hub.
	27 July	Shortened to loop at Temasek Ave from Boon Lay Int under North East MRT Line Rationalisation Phase 2.
2005	2 July	Amended to ply Grange Rd with the partial closure of Somerset Rd.
	26 December	Extended to Pioneer Rd North and amended to ply Toh Guan Rd, express sectors along Commonwealth Ave West, express sectors along Clementi Ave 2 and express sectors along Tanglin Rd and ply Orchard Turn, Scotts Rd, express sectors along Stevens Rd, express sectors along Whitley Rd, express sectors along Pan-Island Expressway (PIE) and express sectors along Toh Tuck Ave towards Pioneer Rd North.
2006	29 October	Amended to ply the extended Orchard Turn, skipping Orchard Blvd.
2009	23 February	Extended to Soon Lee Bus Park.
2010	26 April	Amended to ply Bayfront Ave, Marina Station Rd, express sectors along East Coast Parkway (ECP), express sectors along Ayer Rajah Expressway (AYE), express sectors along Clementi Ave 6 and express sectors along Commonwealth Ave West, skipping Raffles Ave, Stamford Rd, Orchard Rd, Penang Rd, Somerset Rd, Orchard Turn, Scotts Rd, express sectors along Stevens Rd, express sectors along PIE and express sectors along Toh Tuck Ave.
2013	29 December	Amended to ply Central Blvd, Shenton Way and express sectors along Keppel Rd with the opening of the Marina Coastal Expressway (MCE), skipping Marina Station Rd and express sectors along ECP.

Service 502A

Year	Date	Service changes
2005	26 December	Introduced between Pioneer Rd North and Temasek Ave (loop) as a peak hour variant of Service 502, skipping Jurong West Ave 1, Jurong East Ave 1 and Toh Guan Rd.
2006	29 October	Amended to ply the extended Orchard Turn, skipping Orchard Blvd.
2009	23 February	Extended to Soon Lee Bus Park.
2010	26 April	Shortened to terminate at Marina Station Rd and revised to operate during weekday morning peak hours only.
2013	29 December	Amended to terminate at Central Blvd with the opening of the Marina Coastal Expressway (MCE).

Service 502B

Year	Date	Service changes
2005	26 December	Introduced between Jurong West Ave 1 and Temasek Ave (loop) as a peak hour variant of Service 502, skipping Pioneer Rd North, Jurong West Ave 5, Jurong West St 75, Jurong West St 64, Jurong West Central 1 and Boon Lay Ave.
2006	29 October	Amended to ply the extended Orchard Turn, skipping Orchard Blvd.
2010	26 April	Withdrawn.

Service 503

Year	Date	Service changes
1997	5 May	Introduced between Tampines Int and Temasek Ave (AM Peak) and between Anson Rd and Tampines Int (PM Peak) as a peak hour one-directional service.
1999	TBC	Extended to start from Pasir Ris Int, extended to loop at Telok Blangah Rd, converted to full day service and re-numbered Service 505. (Related change)

Service 505

Year	Date	Service changes
1999	TBC	Re-numbered from Service 503 as a service between Pasir Ris Int and Telok Blangah Rd (loop). (Related change)
2000	3 September	Shortened to loop at Temasek Ave and re-numbered Service 518. (Related change)

Service 506

Year	Date	Service changes
1998	TBC	Introduced between Jurong East Int and Bedok Int.
2000	3 September	Extended to Changi Airport.
2002	15 September	Shortened back to Bedok Int.
2006	12 November	Extended to Upp East Coast Ter.
2011	17 December	Amended to Jurong East Temp Int.

Service 507

Year	Date	Service changes
1998	TBC	Introduced between Boon Lay Int and Shenton Way (AM Peak) and between Anson Rd and Boon Lay Int (PM Peak) as a peak hour one-directional service.
2004	23 August	Withdrawn.

Service 508

Date	Service changes
1999	Introduced as a peak-hour one-directional express service between Sengkang and Penang Rd (AM Peak) and between Outram Rd and Sengkang (PM Peak).
3 September 2000	Shortened to Hougang Central Temp Ter with the extension of Express Service 501. At the same time, re-numbered to Express Service 511. (Related change)

Service 511

Date	Service changes
3 September 2000	Re-numbered from Express Service 508 as a peak-hour one-directional express service between Hougang Ctrl and Penang Rd (AM Peak) and between Outram Rd and Hougang Ctrl (PM Peak). (Related change)
20 May 2001	Amended back to Hougang Ctrl Int.
28 July 2003	Withdrawn under NEL Rationalisation Phase 2.

Service 512

Date	Service changes
3 September 2000	Introduced as a peak-hour one-directional express service between Hougang Ctrl and Orchard Rd (AM Peak) and between Moulmein Rd and Hougang Ctrl (PM Peak).
20 May 2001	Amended back to Hougang Ctrl Int.
28 July 2003	Withdrawn under NEL Rationalisation Phase 2.

Service 513

Date	Service changes
17 December 2012	Introduced as a peak-hour one-directional express service between Tampines Ave 5 and Shenton Way (AM Peak) and between Anson Rd and Tampines Ave 5 (PM Peak) under the LTA's Bus Service Enhancement Programme (BSEP).
29 December 2013	Amended to ply Sheares Ave for AM peak trips with the partial closure of ECP.
12 January 2015	An additional trip at 0738 hours was introduced.

Service 518

Date	Service changes
3 September 2000	Re-numbered from Express Service 505 between Pasir Ris and Orchard Rd/Temasek Ave (loop). (Related change)
26 December 2005	Amended to ply Pasir Ris Dr 12, skipping Elias Rd.
26 April 2010	Amended to ply Bayfront Ave, skipping Raffles Blvd & Republic Blvd.

Service 518A

Date	Service changes
26 December 2005	Introduced as a peak hour variant of Express Service 518 between Pasir Ris and Temasek Ave, skipping Tampines Ave 7, Tampines Ave 2, Tampines Ave 1 & Bedok North Rd.
26 April 2010	Shortened to terminate at Bayfront Ave and revised to operate during weekday morning peak hours only.

Service 518B

Date	Service changes
26 December 2005	Introduced as a peak hour variant of Express Service 518 between Tampines Ave 7 and Temasek Ave (loop), skipping Pasir Ris Int, Pasir Ris Dr 3, Pasir Ris Dr 12 & Pasir Ris Dr 1.
26 April 2010	Withdrawn.

TIBS/SMRT

Service 188E

Date	Service changes
25 June 2007	Introduced as a one-directional weekday morning peak-hour express service from Choa Chu Kang to HarbourFront.

Service 188R

Date	Service changes
1 May 2010	Introduced as an express service between Choa Chu Kang to Resorts World Sentosa, operating on weekends & public holidays only.

Service 520

Date	Service changes
5 May 1997	Introduced as a peak-hour one-directional express service between Yishun and Outram Rd (AM Peak) and between New Bridge Rd and Yishun (PM Peak).
2002	Amended to ply the reinstated New Bridge Rd, skipping Upp Pickering St, South Bridge Rd, Neil Rd and Cantonment Rd.
25 August 2003	Withdrawn.

Service 521

Date	Service changes
1 September 1999	Introduced between Bt Panjang and World Trade Ctr.
26 December 1999	Amended to Bt Panjang Int.
29 September 2002	Extended to Woodlands Reg Int and amended to ply Bt Batok East Ave 4, skipping Bt Batok East Ave 2. At the same time, converted to trunk service and re-numbered Service 963. (Related change)

Service 850E

Date	Service changes
18 February 2013	Introduced as an one-directional weekday peak-hour express service between Yishun Ave 11 and Shenton Way (AM Peak) and between Anson Rd and Yishun Ave 11 (PM Peak) under the LTA's Bus Service Enhancement Programme (BSEP).
June 2013	An additional AM peak trip was implemented at 0715 hours.
15 July 2013	An additional AM peak trip was implemented at 0740 hours. At the same time, the first and last AM peak trips were revised to depart 5 minutes later at 0720 & 0750 hours respectively.
14 October 2013	An additional AM peak trip was implemented at 0728 hours. At the same time, the 3rd and 4th AM peak trips were revised to depart at 0735 & 0743 hours respectively.
17 March 2014	An additional AM peak trip was implemented at 0740 hours. At the same time, the 5th AM peak trip was revised to depart 2 minutes later at 0745 hours.
28 September 2015	Amended to start/end at Yishun St 41. At the same time, amended to Yishun Ave 1 & Yishun Ave 11, skipping Yishun Ave 6, Yishun St 31 & Yishun Ring Rd.

Service 854E

Date	Service changes
9 April 2007	Introduced as a one-directional weekday morning peak-hour express service from Yishun to Bedok.
19 November 2011	Amended to terminate at Bedok Temp Int.
30 November 2014	Amended to terminate at Bedok Integrated Transport Hub.
14 March 2015	Amended to start from Yishun Temp Int.

Service 868

Date	Service changes
28 September 2010	Introduced as a one-directional weekday morning peak hour express service between Bt Batok West Ave 5 and Temasek Ave.

Service 951E

Date	Service changes
17 June 2013	Introduced as an one-directional weekday peak-hour express service between Woodlands St 82 and Shenton Way (AM Peak) and between Anson Rd and Woodlands St 82 (PM Peak) under the LTA's Bus Service Enhancement Programme (BSEP).
12 August 2013	An additional morning peak trip was implemented at 0725 hours. At the same time, the 2nd AM peak trip was revised to depart 5 minutes later at 0735 hours.
14 October 2013	An additional morning peak trip was implemented at 0715 hours.
13 January 2014	An additional morning peak trip was implemented at 0742 hours. At the same time, the last AM peak trip was revised to depart 5 minutes later at 0750 hours.
14 April 2014	An additional morning peak trip was implemented at 0730 hours. At the same time, the 2nd, 4th and 5th AM peak trips were revised to depart at 0723, 0736 & 0743 hours respectively.
12 October 2015	Amended to ply Woodlands Ave 5, skipping Woodlands Ave 1 & Woodlands Ave 4.

Service 963E

Date	Service changes
20 February 2006	Introduced as an one-directional weekday morning peak-hour express service from Woodlands to HarbourFront.
11 May 2009	Evening peak trips from HarbourFront to Woodlands were introduced.
12 March 2016	Amended to Woodlands Temp Int.

Service 963R

Date	Service changes
30 January 2010	Introduced as an express service between Woodlands to Resorts World Sentosa, operating on weekends & public holidays only.
12 March 2016	Amended to Woodlands Temp Int.

Service 971E

Date	Service changes
14 March 2011	Introduced as a one-directional weekday morning peak-hour express service from Bukit Panjang to Cecil St.
29 August 2011	Evening peak trips from Anson Rd to Bukit Panjang were introduced.
16 December 2012	Amended to start and terminate at Jelebu Rd with the closure of Bt Panjang Int.

Service 982E

Date	Service changes
18 March 2013	Introduced as an one-directional weekday peak-hour express service between Choa Chu Kang Ave 5 and Marina Blvd (AM Peak) and between Central Blvd and Choa Chu Kang Ave 5 (PM Peak) under the LTA's Bus Service Enhancement Programme (BSEP).

Tower Transit

Service 97e

Date	Service changes
12 June 2016	Handed over to Tower Transit between Jurong East and Marina Centre (AM Peak) and between Marina Centre and Jurong East (PM Peak). (Related change)