History of Services 400 - 450

Service 400

Date	Service changes
30 July 1989	Introduced between Shenton Way and Marina Mall (loop).
14 November 2005	Classified as a Parks service.
19 October 2008	Amended to loop at Marina Mall, skipping Marina Way and Marina Grove.
15 March 2009	Reverted back to trunk service.
19 July 2009	Extended to loop at Marina Gdns Dr.
24 June 2012	Amended to ply the extended Marina Gdns Dr with the permanent closure of Marina Mall.
29 December 2013	Amended to ply Central Blvd, Marina Way & Marina Blvd towards Marina Gardens Dr and Central Blvd, Marina St, Marina Station Rd, Central Blvd and Shenton Way towards Shenton Way Ter with the opening of MCE.
28 September 2014	Amended to ply Cecil St and Marina Blvd with the road changes in Marina South area, skipping Maxwell Rd.

Date	Service changes
24 October 1976	Introduced between Chai Chee and East Coast Park/Big Splash (loop), operating on Sundays & Public Holidays only.
26 July 1980	Amended to ply Bedok South Rd, skipping Bedok South Ave 1.
8 September 1985	Amended to Bedok Int with the closure of Chai Chee Ter.
3 September 1989	Extended to loop at Fort Rd and ply East Coast Park Service Rd in both directions.
21 September 1997	Extended to Lor 1 Geylang Ter.
7 June 2003	Extended to ply Orchard Rd and loop at Tomlinson Rd on a trial basis. At the same time, enhanced to operate on Saturdays, in addition to Sundays and public holidays.
4 December 2004	Shortened to loop at Fort Rd via Marine Parade Rd, Amber Rd, Tg Katong Rd, Old Airport Rd & Mountbatten Rd.
14 November 2005	Classified as a Parks service.
19 March 2006	Amended to ply Cassia Link, Cassia Cres, Guillemard Rd and Guillemard Camp Rd with the partial closure of Old Airport Rd and Dunman Rd to facilitate the construction works for the Circle MRT Line.
29 December 2008	Amended to ply the re-instated Old Airport Rd and Dunman Rd, skipping Cassia Link, Guillemard Rd and Guillemard Camp Rd.
15 March 2009	Reverted back to trunk service.
19 November 2011	Amended to Bedok Temp Int.
30 November 2014	Amended to air-conditioned Bedok Int.

Service Gen	Date	Service changes
1st Gen (1975 - 1982)	11 May 1975	Introduced between Stamford Rd (Capitol Theatre) and Bukit Timah Race Course (loop).
1st Gen (1975 - 1982)	28 February 1982	Withdrawn.
2nd Gen (1994 - 1995)	3 September 1994	Re-introduced between Bedok and SAFRA Resort & Country Club (loop) on a 3-month trial.
2nd Gen (1994 - 1995)	1995	Withdrawn.
3rd Gen (2006 - present)	1 April 2006	Re-introduced between Marina South Pier and Shenton Way/Anson Rd (loop).
	28 November 2011	Re-routed to start from Shenton Way and loop at Marina South Pier with the shifting of the bus stop outside Marina South Pier.
	13 May 2012	Extended to serve the International Cruise Ter along Marina Coastal Dr, making 2 loops inside Marina South Pier. Dual Red/White plates were introduced, indicating 'Cruise Ter' (Red) & 'Shenton Way' (White).
	29 December 2013	Amended to ply Central Blvd, Marina Way & Marina Blvd towards Marina Coastal Dr and Central Blvd, Marina St, Marina Station Rd, Central Blvd and Shenton Way towards Shenton Way Ter with the opening of MCE.
	28 September 2014	Amended to ply Cecil St and Marina Blvd with the road changes in Marina South area, skipping Maxwell Rd.

Date	Service changes
3 April 1977	Introduced between Pasir Ris Rd and Tampines Rd (loop).
22 October 1989	Amended to loop at Pasir Ris Dr 1.
10 December 1989	Amended to loop at Pasir Ris Town Centre Rd.
18 May 1990	Re-routed to start from Pasir Ris Int and loop at Pasir Ris Rd under Bus-MRT Rationalization. At the same time, converted to full-day service.
14 November 2005	Classified as a Parks service.
15 March 2009	Reverted back to trunk service.

Date	Service changes
4 June 1978	Introduced between Jurong and Singapore Science Centre (loop), operating on Saturdays, Sundays & Public Holidays only.
13 June 1980	Withdrawn.

Service Gen	Date	Service changes
1st Gen (1978 - 1982)	4 June 1978	Introduced between Jurong and Jurong Bird Park (loop), operating on Saturdays, Sundays & Public Holidays only.
1st Gen (1978 - 1982)	22 November 1982	Withdrawn.
2nd Gen (1993 - present)	18 July 1993	Re-introduced between Boon Lay and Choa Chu Kang Rd End (loop), operating on 2 weekends before, the actual day of and 2 weekends after Qing Ming, Good Friday, the weekend before Ramadan fasting month, Hari Raya Puasa, Hari Raya Haji, the weekend before and actual day of Deepavali and All Souls' Day.
	5 April 1997	Amended to ply Lim Chu Kang Rd.
	18 June 2006	Amended to Boon Lay Temp Int.
	27 December 2009	Amended to air-conditioned Boon Lay Int and ply Jurong West Ctrl 1.

Date	Service changes
4 June 1978	Introduced between Jurong and Chinese/Japanese Gardens (loop), operating on Saturdays, Sundays & Public Holidays only.
22 October 1989	Withdrawn.

Date	Service changes
3 June 1978	Introduced between Jurong and Pasir Laba Camp (SAFTI) (loop), operating between 1230 and 1430 hours on Saturdays & between 2000 and 2300 hours on Sundays & Public Holidays.
1 July 1990	Withdrawn.