History of Express Services

SBS/SBS Transit

Service 501

Date	Service changes
5 May 1997	Introduced as a peak-hour one-directional express service between Hougang Central and Penang Rd (AM Peak) and between Anson Rd and Hougang Ctrl (PM Peak).
22 December 1997	Re-routed as a loop service between Hougang Central and Penang Rd, operating during the day on weekdays and on Saturday mornings only.
24 May 1998	Amended to Hougang Central Temp Ter.
3 September 2000	Extended to Sengkang Ter.
28 April 2001	Amended to Sengkang Temp Int.
18 January 2003	Amended to air-conditioned Sengkang Int.
27 July 2003	Withdrawn under NEL Rationalisation Phase 2.

Service 501X

Date	Service changes
22 December 1997	Introduced as an alternate route of Express 501 between Hougang Central and Temasek Ave (loop), operating on weeknights, Saturday afternoons and evenings and full day on Sundays and public holidays.
24 May 1998	Amended to Hougang Central Temp Ter.
3 September 2000	Extended to Sengkang Ter.
28 April 2001	Amended to Sengkang Temp Int.
18 January 2003	Amended to air-conditioned Sengkang Int.
27 July 2003	Withdrawn under NEL Rationalisation Phase 2.

Service 502

Date	Service changes
5 May 1997	Introduced between Hougang Ctrl and Boon Lay.
24 May 1998	Amended to Hougang Central Temp Ter.
3 September 2000	Extended to Sengkang Ter.
28 April 2001	Amended to Sengkang Temp Int.
18 January 2003	Amended to air-conditioned Sengkang Int.
27 July 2003	Shortened to loop at Temasek Ave from Boon Lay Int under NEL Rationalisation Phase 2.
2 July 2005	Amended to ply Grange Rd with the closure of Orchard Link.
26 December 2005	Extended to Pioneer Rd North via Jurong West Central 1, Jurong West St 64, Jurong West St 75 & Jurong West Ave 5. At the same time, amended to ply Toh Guan Rd, ply express sectors along Commonwealth Ave West, Clementi Ave 2 and Tanglin Rd and ply Orchard Turn, Scotts Rd, Stevens Rd, Whitley Rd, PIE and Toh Tuck Ave towards Pioneer Rd North.
23 February 2009	Extended to Soon Lee Bus Park.
26 April 2010	Amended to ply Bayfront Ave, Marina Station Rd, ECP, AYE, Clementi Ave 6 and Commonwealth Ave West, skipping Raffles Ave, Stamford Rd, Orchard Rd, Penang Rd, Somerset Rd, Orchard Turn, Scotts Rd, Stevens Rd, PIE & Toh Tuck Ave.
29 December 2013	Amended to loop at Shenton Way via Central Blvd with the opening of the MCE.

Service 502A

Date	Service changes
26 December 2005	Introduced as a peak-hour variant of Express Service 502 between Pioneer Rd North and Temasek Ave, skipping Jurong West Ave 1, Jurong East Ave 1 & Toh Guan Rd.
23 February 2009	Extended to Soon Lee Bus Park.
26 April 2010	Shortened to terminate at Marina Station Rd and revised to operate during weekday morning peak hours only.
29 December 2013	Amended to terminate at Central Blvd.

Service 502B

Date	Service changes
26 December 2005	Introduced as a peak-hour variant of Express Service 502 between Jurong West Ave 1 and Temasek Ave, skipping Pioneer Rd North, Jurong West Ave 5, Jurong West St 75, Jurong West St 64, Jurong West Ctrl 1 & Boon Lay Ave.
26 April 2010	Withdrawn.

Service 503

Date	Service changes
5 May 1997	Introduced as a peak-hour one-directional express service between Tampines and Temasek Ave (AM Peak) and between Anson Rd and Tampines (PM Peak).
Sep 1999	Re-routed as a full day loop service between Pasir Ris Int and Telok Blangah Rd and re-numbered Express Service 505. (Related change)

Service 505

Date	Service changes
Sep 1999	Re-numbered from Express Service 503 between Pasir Ris and Jln Bukit Merah/Telok Blangah Rd (loop). (Related change)
3 September 2000	Shortened to loop at Temasek Ave and re-numbered Express Service 518. (Related change)

Service 506

Date	Service changes
1998	Introduced between Jurong East and Bedok.
2000	Extended to Changi Airport.
15 September 2002	Shortened back to Bedok Int.
12 November 2006	Extended to Upp East Coast Ter via Bedok North Ave 3, New Upp Changi Rd, Bedok South Ave 3 & Upp East Coast Rd.
17 December 2011	Amended to Jurong East Temp Int.

Service 507

Date	Service changes
1998	Introduced as a peak-hour one-directional express service between Boon Lay and Shenton Way (AM Peak) and between Anson Rd and Boon Lay (PM Peak).
22 August 2004	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.
27 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.
27 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.
24 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. At the same time, converted to trunk service and re-numbered Service 963.

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.

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 air-conditioned Bedok Int.
16 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.

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.

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.

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 Central Blvd (AM Peak) and between Central Blvd and Choa Chu Kang Ave 5 (PM Peak) under the LTA's Bus Service Enhancement Programme (BSEP).