History of Services 400 - 450

Service 400

Operator	Year	Date	Service changes
Singapore Bus Service	1989	30 July	Introduced between Shenton Way Ter and Marina Mall (loop).
Template:SBS Transit (Current)	2001	1 November	Operated by SBS Transit.
	2005	14 November	Re-classified as a Parks service.
	2008	7 January	Amended to skip the western loop of Marina Mall, Marina Way and Marina Grove.
		19 October	Amended to loop at Marina Mall, skipping the eastern loop of Marina Way and Marina Grove.
	2009	18 January	Calls at a relocated bus stop outside Marina Bay Stn along Marina Station Rd with the partial closure of Marina St to facilitate the construction of the Downtown MRT Line.
		16 March	Reverted back to trunk service.
		19 July	Extended to loop at Marina Gardens Dr.
	2010	26 April	Amended to the relocated Shenton Way Ter.
	2012	14 January	Calls at the reinstated bus stop outside Marina Bay Stn along Marina St.
		24 June	Amended to ply the extended Marina Gardens Dr with the permanent closure of Marina Mall.
	2013	29 December	Amended to ply Marina Blvd/Central Blvd, Marina St, Central Blvd and Shenton Way with the opening of the Marina Coastal Expressway (MCE).
	2014	28 September	Amended to ply Cecil St and Marina Blvd with the road changes in Marina South area, skipping express sectors along Maxwell Rd.
	2017	25 June	Amended to the relocated Shenton Way Ter.

Service 401

Operator	Year	Date	Service changes
Singapore Bus Service	1976	24 October	Introduced between Chai Chee Ter and East Coast Park Service Rd (loop), operating on Sundays and Public Holidays only.
	1980	27 July	Amended to ply Bedok South Rd, skipping Bedok South Ave 1.
	1985	8 September	Amended to Bedok Int with the closure of Chai Chee Ter.
	1989	3 September	Extended to loop at Fort Rd and ply East Coast Park Service Rd in both directions.
	1997	21 September	Extended to Lor 1 Geylang Ter and amended to ply New Upp Changi Rd, Siglap Rd and Marine Parade Rd, skipping Bedok South Rd and Bedok South Ave 1.
Template:SBS Transit (Current)	2001	1 November	Operated by SBS Transit.
	2003	7 June	Extended to loop at Tomlinson Rd on a trial basis and enhanced to operate on Saturdays.
	2004	4 December	Shortened to loop at Fort Rd.
	2005	14 November	Re-classified as a Parks service.
	2006	19 March	Amended to ply Guillemard Rd with the partial closure of Old Airport Rd and Dunman Rd to facilitate the construction of Dakota MRT station on the Circle MRT Line.
	2008	29 December	Amended to ply the reinstated Old Airport Rd and Dunman Rd, skipping Guillemard Rd.
	2009	16 March	Reverted back to trunk service.
	2011	19 November	Amended to Bedok Temp Int.
	2014	30 November	Amended to Bedok Integrated Transport Hub.

Service 402

Operator	Service Gen	Year	Date	Service changes
Singapore Bus Service	1st Gen (1975 - 1982)	1975	11 May	Introduced between Stamford Rd (Capitol Theatre) and Bukit Timah Race Course (loop), operating on racing days that fall on Sundays only.
		1982	28 February	Withdrawn.
Template:SBS Transit (Current)	2nd Gen (2006 - present)	2006	1 April	Re-introduced between Marina South Pier Ter and Anson Rd (loop).
		2009	18 January	Calls at a relocated bus stop outside Marina Bay Stn along Marina Station Rd with the partial closure of Marina St to facilitate the construction of the Downtown MRT Line.
		2011	28 November	Amended to start from Shenton Way Ter and loop at Marina Coastal Dr.
		2012	14 January	Calls at the reinstated bus stop outside Marina Bay Stn along Marina St.
		2013	29 December	Amended to ply Marina Blvd/Central Blvd, Marina St, Central Blvd and Shenton Way with the opening of the Marina Coastal Expressway (MCE).
		2014	28 September	Amended to ply Cecil St and Marina Blvd with the road changes in Marina South area, skipping express sectors along Maxwell Rd.
		2017	25 June	Amended to the relocated Shenton Way Ter.

Service 403

Operator	Year	Date	Service changes
Singapore Bus Service	1977	3 April	Introduced between Pasir Ris Rd Ter and Tampines Rd (loop), operating on Sundays and Public Holidays only.
	1989	22 October	Amended to loop at Pasir Ris Dr 1 and enhanced to operate on weekdays and Saturdays.
		10 December	Amended to loop at Pasir Ris Town Centre Rd.
	1990	18 May	Amended to start from Pasir Ris Int and loop at Pasir Ris Rd.
Template:SBS Transit	2001	1 November	Operated by SBS Transit.
	2005	14 November	Re-classified as a Parks service.
	2006	20 May	Calls at a new pair of bus stops outside Blk 638 and outside Blk 613 along Elias Rd.
	2009	16 March	Reverted back to trunk service.
	2012	29 April	Calls at a new bus stop outside Blk 612 along Pasir Ris Dr 1.
Template:Go-Ahead Singapore (Current)	2016	18 September	Operated by Go-Ahead Singapore.

Service 404

Operator	Year	Date	Service changes
Singapore Bus Service	1978	4 June	Introduced between Jurong Int and Science Centre Rd (loop), operating on Saturdays, Sundays and Public Holidays only.
	1980	15 June	Withdrawn.

Service 405

Operator	Service Gen	Year	Date	Service changes
Singapore Bus Service	1st Gen (1978 - 1979)	1978	4 June	Introduced between Jurong Int and Jln Ahmad Ibrahim (Jurong Bird Park) (loop), operating on Saturdays, Sundays and Public Holidays only.
		1979	23 December	Withdrawn.
	2nd Gen (1993 - present)	1993	18 July	Re-introduced between Boon Lay Int and Choa Chu Kang Rd End (loop), operating during Qing Ming period, Good Friday, Ramadan, Hari Raya Puasa, Hari Raya Haji, Deepavali and All Souls' Day only.
		1997	5 April	Enhanced to ply Lim Chu Kang Rd.
Template:SBS Transit (Current)		2001	1 November	Operated by SBS Transit.
		2006	18 June	Amended to Boon Lay Temp Int.
		2009	27 December	Amended to Boon Lay Integrated Transport Hub and amended to ply Jurong West Central 1, skipping Jurong West Central 3.
		2010	10 February	Calls at an additional bus stop outside Blk 263 along Jln Boon Lay.

Service 406

Operator	Year	Date	Service changes
Singapore Bus Service	1978	4 June	Introduced between Jurong Int and Chinese Garden Rd/Japanese Garden Rd (loop), operating on Saturdays, Sundays and Public Holidays only.
	1989	22 October	Integrated with Service 199 and withdrawn.

Service 450

Operator	Year	Date	Service changes
Singapore Bus Service	1978	3 June	Introduced between Jurong Int and Pasir Laba Rd (loop), operating during Saturday afternoons and during the night on Sundays and Public Holidays.
	1990	1 July	Withdrawn with the opening of Boon Lay Int.