History of Services 400 - 450
Service 400
| Year | Date | Service changes |
|---|---|---|
| 1989 | 30 July | Introduced between Shenton Way Ter and Marina Mall (loop). |
| 2005 | 14 November | Re-classified as a Parks service. (Related change) |
| 2009 | 15 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 | 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. |
Service 401
| Year | Date | Service changes |
|---|---|---|
| 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. |
| 2003 | 7 June | Extended to loop at Tomlinson Rd on a trial basis and enhanced to operate on Saturdays. |
| 2004 | 20 April | Amended to ply Mountbatten Rd, Kallang Rd, Victoria St, Jln Sultan and Beach Rd with the temporary closure of Nicoll Highway. |
| 4 December | Shortened to loop at Fort Rd. | |
| 2005 | 14 November | Re-classified as a Parks service. (Related change) |
| 2009 | 15 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
| Service Gen | Year | Date | Service changes |
|---|---|---|---|
| 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| 1982 | 28 February | Withdrawn. | |
| 2nd Gen (1994 - 1995) |
1994 | 3 September | Re-introduced between Bedok Int and Changi Coast Walk (loop) on a 3-month trial, operating on Saturdays, Sundays and Public Holidays only. |
| 1995 | TBC | Withdrawn. | |
| 3rd Gen (2006 - present) |
2006 | 1 April | Re-introduced between Marina South Pier Ter and Anson Rd (loop). |
| 2011 | 28 November | Amended to start from Shenton Way Ter and loop at Marina Coastal Dr. | |
| 2012 | 13 May | Extended to serve the International Cruise Ter along Marina Coastal Dr, making 2 loops inside Marina South Pier. | |
| 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. |
Service 403
| Year | Date | Service changes |
|---|---|---|
| 1977 | 3 April | Introduced between Pasir Ris Rd 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 under Bus-MRT Rationalisation. |
| 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 under Bus-MRT Rationalization. |
| 2005 | 14 November | Re-classified as a Parks service. (Related change) |
| 2009 | 15 March | Reverted back to trunk service. |
| 2016 | 18 September | To be handed over to Go-Ahead. (Related change) |
Service 404
| Year | Date | Service changes |
|---|---|---|
| 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
| Service Gen | Year | Date | Service changes |
|---|---|---|---|
| 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 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. |
| 1997 | 5 April | Enhanced to ply Lim Chu Kang Rd. | |
| 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. |
Service 406
| Year | Date | Service changes |
|---|---|---|
| 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 under Bus-MRT Rationalization. |
Service 450
| Year | Date | Service changes |
|---|---|---|
| 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. |