History of Services 700 - 859

Service 700

Operator	Route	Year	Date	Service changes
Known as prior to 10 May 2004	Woodlands ↔ Shenton Way	1998	31 August	Introduced between Woodlands Reg Int and Shenton Way Ter as a RapidBus service on weekdays and Saturdays.
			9 November	Serves additional bus stop outside UIC Bldg along Shenton Way.
				Revised to operate between 0630 hrs and 2000 hrs on weekdays, and between 0630 hrs and 2100 hrs on Saturdays.
	Bukit Panjang ↔ Shenton Way	1999	26 December	Shortened to Bt Panjang Int under Bukit Panjang LRT Rationalisation.
		2000	TBC	Serves new bus stop before Goldhill Ave along Dunearn Rd.
			TBC	Serves new bus stop after Shenton Way along Palmer Rd.
		2002	7 July	Skips the bus stop outside Orchard Emerald along Orchard Rd.
			TBC	Converted to regular trunk service, serving all bus stops along Bt Timah Rd/Dunearn Rd and Scotts Rd.
		2005	2 July	Amended to ply Grange Rd and Orchard Lk with the partial closure of Somerset Rd.
		2006	18 June	Integrated with Service 921 and amended to ply Pending Rd, Petir Rd and Dairy Farm Rd.
			29 October	Serves relocated bus stop outside Orchard Stn along Orchard Turn.
		2009	18 January	Serves 2 new pairs of bus stops after and before Chestnut Ave and before and after Dairy Farm Rd along Petir Rd.
		2012	1 July	Designated wheelchair-accessible bus service (WAB).
			16 December	Amended to start from and terminate at Bt Panjang Rd with the opening of Bt Panjang Temp Bus Pk and closure of Bt Panjang Int.
		2017	25 June	Amended to the relocated Shenton Way Ter.
		2020	30 August	Discontinued under Downtown Line 2 Rationalisation.

Service 700A

Operator	Route	Year	Date	Service changes
Known as prior to 10 May 2004	Bukit Panjang ↺ Temasek Ave	1999	26 December	Introduced between Bt Panjang Int and Temasek Ave (Loop) as an alternate route of Service 700 under Bukit Panjang LRT Rationalisation, operating during evening off peak hours on weekdays and Saturdays and throughout the day on Sundays and Public Holidays.
		2000	TBC	Serves new bus stop before Goldhill Ave along Dunearn Rd.
		2002	7 July	Skips the bus stop outside Orchard Emerald along Orchard Rd.
			TBC	Converted to regular trunk service, serving all bus stops along Bt Timah Rd/Dunearn Rd and Scotts Rd.
		2005	2 July	Amended to ply Grange Rd and Orchard Lk with the partial closure of Somerset Rd.
		2006	18 June	Integrated with Service 921 and amended to ply Pending Rd, Petir Rd and Dairy Farm Rd.
			29 October	Serves relocated bus stop outside Orchard Stn along Orchard Turn.
		2009	18 January	Serves 2 new pairs of bus stops after and before Chestnut Ave and before and after Dairy Farm Rd along Petir Rd.
		2012	1 July	Designated wheelchair-accessible bus service (WAB).
			16 December	Amended to start from and terminate at Bt Panjang Rd with the opening of Bt Panjang Temp Bus Pk and closure of Bt Panjang Int.
		2020	30 August	Discontinued under Downtown Line 2 Rationalisation.

Service 825

Operator	Route	Year	Date	Service changes
Known as prior to 10 May 2004	AMYishun → Ang Mo Kio Ave 6 PMAng Mo Kio Ave 6 → Yishun	1988	17 August	Introduced between Yishun Int and Ang Mo Kio Ave 6 as a peak hour one-directional service during weekday and Saturday mornings.
	AMSpringleaf Rd → Yio Chu Kang PMYio Chu Kang → Springleaf Rd	1989	1 December	Amended to start from Yio Chu Kang Ter, shortened to start from Springleaf Rd and enhanced to operate during off peak hours on weekdays and Saturdays, operating between Springleaf Rd and Yio Chu Kang Ter during morning peak hours and between Yio Chu Kang Ter and Springleaf Ave during evening peak hours.
	Yio Chu Kang ↺ Springleaf Rd	1995	10 July	Amended to loop at Springleaf Rd from Yio Chu Kang Ter.
		1996	TBC	First bus brought forward to 0650 hrs.
	Yio Chu Kang ↺ Lentor Loop	1997	15 December	Shortened to loop at Lentor Loop and amended to ply Ang Mo Kio Ave 6 and Lentor Dr before plying Lentor Rd and Lentor Loop, skipping Ang Mo Kio Ave 9.
				First bus brought forward to 0630 hrs.
		1998	TBC	Serves new bus stop after Florissa Pk along Lentor Loop.
		2002	TBC	Last bus extended to 2045 hrs on weekdays.
		2007	12 March	Amended to ply the western loop of Lentor Loop, Lentor Way and Lentor Vale.
				Last bus revised to 1425 hrs on Saturdays.
		2008	9 June	Serves new bus stop before Bullion Pk along Lentor Loop.
		2019	17 October	Designated wheelchair-accessible bus service (WAB).
(Current)		2021	3 October	Operations transferred to Tower Transit Singapore.

Service 850

Operator	Route	Year	Date	Service changes
	Yishun ↔ Bukit Merah	1985	3 February	Introduced between Yishun Ctrl Ter and Bt Merah Int.
		1987	23 August	Amended to Yishun Int.
			13 December	Serves new staggered bus stop outside Orchard Stn along Orchard Blvd, skipping the bus stop opposite Orchard Stn.
				Serves new bus stop outside Newton Stn along Scotts Rd.
		1988	28 February	Revised to operate on weekdays and Saturdays only with the introduction of Service 850#.
		1991	3 November	Serves additional bus stop after Jln Bt Merah along Kg Bahru Rd.
		1992	20 September	Integrated with Service 167 and discontinued under TransitLink Network Integration Exercise Phase 9.

Service 850#

Operator	Route	Year	Date	Service changes
	Yishun ↔ Bukit Merah	1988	28 February	Introduced between Yishun Int and Bt Merah Int as an alternate route of Service 850 via Marina Ctr, operating on Sundays and Public Holidays only.
		1991	3 November	Serves additional bus stop after Jln Bt Merah along Kg Bahru Rd.
		1992	20 September	Integrated with Service 167 and discontinued under TransitLink Network Integration Exercise Phase 9.

Service 851

Operator	Route	Year	Date	Service changes
Known as prior to 10 May 2004	Yishun ↔ Bukit Merah	1985	16 February	Introduced between Yishun Ctrl Ter and Bt Merah Int.
		1987	6 April	Skips removed bus stop before College Rd along Outram Rd.
			23 August	Amended to Yishun Int.
			27 September	Amended to ply the extended Eu Tong Sen St towards Yishun Int to facilitate the first stage of road expansion along New Bridge Rd.
			1 November	Amended to ply Eu Tong Sen St to facilitate the second stage of road expansion along New Bridge Rd.
			13 December	Serves new staggered bus stop opposite Peninsula Plaza along Nth Bridge Rd, skipping the bus stop outside St Andrew's Cath.
		1988	20 March	Amended to ply Upp Cross St and New Bridge Rd, skipping Neil Rd.
		1990	22 July	Serves additional bus stop outside Ellenborough Mkt along Eu Tong Sen St.
		1997	7 December	Amended to ply Sth Bridge Rd, Neil Rd and Cantonment Rd with the partial closure of New Bridge Rd to facilitate the construction of Chinatown station on the North East Line.
		2001	18 February	Serves the bus stop outside Novena Stn along Thomson Rd, skipping the bus stop outside Novena Ch.
		2002	20 April	Amended to ply Upp Cross St and the reinstated New Bridge Rd, skipping Sth Bridge Rd, Neil Rd and Cantonment Rd.
		2003	TBC	Skips a pair of bus stops near LP 94 and opposite LP 91 along Lentor Ave.
		2009	1 June	Designated wheelchair-accessible bus service (WAB).
		2015	14 March	Amended to Yishun Temp Int.
(Current)		2018	25 March	Operations transferred to SBS Transit.
		2019	8 September	Amended to Yishun Integrated Transport Hub.
		2020	12 January	Skips a pair of removed bus stops under and after Lentor Flyover along Lentor Ave.
			8 November	Skips the bus stop opposite SLF Cplx along Thomson Rd to facilitate the construction of the North-South Corridor (NSC).

Service 852

Operator	Route	Year	Date	Service changes
Known as prior to 10 May 2004	Yishun ↔ Jurong	1985	8 December	Introduced between Yishun Ctrl Ter and Jurong Int.
		1986	6 July	Serves new pair of bus stops outside and opposite Bt Batok Sec Sch along Bt Batok East Ave 6.
		1987	12 August	Skips removed bus stop after Joan Rd along Lornie Rd.
			23 August	Amended to Yishun Int.
	Yishun ↔ Boon Lay	1990	1 July	Amended to Boon Lay Int.
	Yishun ↔ Bukit Batok	1996	10 March	Shortened to Bt Batok Int under Woodlands MRT Rationalisation.
				First bus from Yishun Int revised to 0530 hrs on Sundays & Public Holidays.
		2003	TBC	Skips a pair of bus stops near LP 94 and opposite LP 91 along Lentor Ave.
		2012	29 April	Designated wheelchair-accessible bus service (WAB).
		2015	14 March	Amended to Yishun Temp Int.
(Current)		2018	25 March	Operations transferred to SBS Transit.
			28 October	Amended to ply southbound Lornie Highway towards Bt Batok Int.
		2019	23 June	Amended to ply northbound Lornie Highway towards Yishun Temp Int.
			8 September	Amended to Yishun Integrated Transport Hub.
		2020	12 January	Skips a pair of removed bus stops under and after Lentor Flyover along Lentor Ave.

Service 853

Operator	Route	Year	Date	Service changes
Known as prior to 10 May 2004	Yishun ↔ Lor 1 Geylang	1987	20 January	Introduced between Yishun Ctrl Ter and Lor 1 Geylang Ter.
			21 June	Revised to operate on weekdays and Saturdays only with the introduction of Service 853#.
			23 August	Amended to Yishun Int.
		1989	TBC	Serves new pair of bus stops outside Blk 206 and outside Blk 261 along Serangoon Ctrl.
			TBC	Serves new staggered bus stop outside Blk 322 along Ang Mo Kio Ave 3.
			19 November	Serves new bus stop outside Kallang Stn along Sims Ave.
		1997	8 December	Skips the bus stop outside Kallang Stn along Sims Ave.
		2002	TBC	Serves new pair of bus stops after Sommerville Rd and after Sunshine Lodge along Upp Serangoon Rd.
		2003	4 May	Amended to ply Geylang Bahru, Bendemeer Rd, Whampoa East and Serangoon Rd, skipping Jln Kolam Ayer.
			TBC	Serves new pair of bus stops outside Potong Pasir Stn along Upp Serangoon Rd.
			TBC	Skips a pair of bus stops near LP 94 and opposite LP 91 along Lentor Ave.
		2004	27 April	Amended to ply Geylang Rd, Kallang Rd and Sims Ave towards Yishun Int with the temporary conversion of Lor 1 Geylang to one-way traffic.
			6 December	Amended to ply the reinstated Lor 1 Geylang towards Yishun Int, skipping Geylang Rd, Kallang Rd and Sims Ave.
		2011	13 February	Amended to ply Yishun Ctrl 2.
		2013	29 September	Designated wheelchair-accessible bus service (WAB).
		2014	10 August	Amended to ply Yishun Ctrl 1.
		2015	14 March	Amended to Yishun Temp Int.
		2019	8 September	Amended to Yishun Integrated Transport Hub.
		2020	12 January	Skips a pair of removed bus stops under and after Lentor Flyover along Lentor Ave.
(Current)		2021	5 September	Operations transferred to Tower Transit Singapore.

Service 853#/853M

Operator	Route	Year	Date	Service changes
Known as prior to 10 May 2004	853#Yishun ↔ Marine Parade	1987	21 June	853#Introduced between Yishun Ctrl Ter and Marine Parade Ter as an alternate route of Service 853, operating on Sundays and Public Holidays only.
			23 August	Amended to Yishun Int.
		1989	TBC	Serves new pair of bus stops outside Blk 206 and outside Blk 261 along Serangoon Ctrl.
			TBC	Serves new staggered bus stop outside Blk 322 along Ang Mo Kio Ave 3.
			19 November	Serves new bus stop outside Kallang Stn along Sims Ave.
		1997	8 December	Skips the bus stop outside Kallang Stn along Sims Ave.
	853#Yishun ↺ Siglap Rd	2001	16 September	Amended to loop at Siglap Rd from Yishun Int with the closure of Marine Parade Ter.
	853#Yishun ↔ Upp East Coast		9 December	Extended to Upp East Coast Ter.
		2002	TBC	Serves new pair of bus stops after Sommerville Rd and after Sunshine Lodge along Upp Serangoon Rd.
		2003	4 May	Amended to ply Geylang Bahru, Bendemeer Rd, Whampoa East and Serangoon Rd, skipping Jln Kolam Ayer.
			TBC	Serves new pair of bus stops outside Potong Pasir Stn along Upp Serangoon Rd.
			TBC	Serves new bus stop outside Shell Kiosk along Tg Katong Rd.
			TBC	Skips a pair of bus stops near LP 94 and opposite LP 91 along Lentor Ave.
		2004	27 April	Amended to ply Geylang Rd, Kallang Rd and Sims Ave towards Yishun Int with the temporary conversion of Lor 1 Geylang to one-way traffic.
			6 December	Amended to ply the reinstated Lor 1 Geylang towards Yishun Int, skipping Geylang Rd, Kallang Rd and Sims Ave.
		2006	TBC	Serves additional bus stop outside Victoria Sch along Marine Parade Rd.
		2011	13 February	Amended to ply Yishun Ctrl 2.
		2013	29 September	Designated wheelchair-accessible bus service (WAB).
		2014	10 August	Amended to ply Yishun Ctrl 1.
		2015	14 March	Amended to Yishun Temp Int.
	853MYishun ↔ Upp East Coast	2019	8 September	853# 853MAmended to Yishun Integrated Transport Hub and re-numbered as Service 853M.
		2020	12 January	Skips a pair of removed bus stops under and after Lentor Flyover along Lentor Ave.
(Current)		2021	5 September	Operations transferred to Tower Transit Singapore.
		2025	31 August	Skips bus stop outside Kew Green Condo along Upp East Coast Rd.

Service 854

Operator	Route	Year	Date	Service changes
Known as prior to 10 May 2004	Yishun ↔ Bedok	1987	18 January	Introduced between Yishun Ctrl Ter and Bedok Int.
			23 August	Amended to Yishun Int.
		1998	TBC	First bus from Bedok Int brought forward to 0535 hrs on weekdays.
		2003	TBC	Skips a pair of bus stops near LP 94 and opposite LP 91 along Lentor Ave.
		2011	19 November	Amended to Bedok Temp Int.
		2014	30 November	Amended to Bedok Integrated Transport Hub.
		2015	14 March	Amended to Yishun Temp Int.
			11 October	Designated wheelchair-accessible bus service (WAB).
		2019	8 September	Amended to Yishun Integrated Transport Hub.
		2020	12 January	Skips a pair of removed bus stops under and after Lentor Flyover along Lentor Ave.
(Current)		2021	5 September	Operations transferred to Tower Transit Singapore.

Service 855

Operator	Route	Year	Date	Service changes
Known as prior to 10 May 2004	Yishun ↔ HarbourFront	1989	1 October	Introduced between Yishun Int and World Trade Ctr Ter.
		1990	21 February	Skips removed bus stop opposite Jasmine Rd along Upp Thomson Rd.
		2003	TBC	Skips a pair of bus stops near LP 94 and opposite LP 91 along Lentor Ave.
		2004	TBC	Skips removed bus stop outside Nanyang Pr Sch along Farrer Rd.
		2006	29 October	Serves new bus stop outside VivoCity along Telok Blangah Rd.
		2008	7 December	Skips removed bus stop opposite Temenggong D Mque along Telok Blangah Rd.
		2010	28 June	First bus from HarbourFront Int brought forward to 0535 hrs daily.
		2011	3 December	Designated wheelchair-accessible bus service (WAB).
		2015	14 March	Amended to Yishun Temp Int and amended to ply Yishun Ctrl 1.
		2018	28 October	Amended to ply southbound Lornie Highway towards HarbourFront Int.
		2019	23 June	Amended to ply northbound Lornie Highway towards Yishun Temp Int.
			8 September	Amended to Yishun Integrated Transport Hub and amended to skip Yishun Ctrl 1.
			22 December	Serves new bus stop before Adana @ Thomson along Upp Thomson Rd.
		2020	12 January	Skips a pair of removed bus stops under and after Lentor Flyover along Lentor Ave.
(Current)		2021	5 September	Operations transferred to Tower Transit Singapore.

Service 856

Operator	Route	Year	Date	Service changes
Known as prior to 10 May 2004	Yishun ↔ Woodlands Ctr	1988	25 December	Introduced between Yishun Int and Woodlands Int.
	Yishun ↔ Woodlands	1996	4 February	Extended to Woodlands Reg Int.
			10 March	Amended to ply Canberra Rd under Woodlands MRT Rationalisation, skipping Admiralty Rd East.
		1999	TBC	Serves new pair of bus stops before Sembawang Stn and after Admiralty Country Club along Canberra Rd.
			19 July	Serves new bus stop outside Woodlands CIQ along Woodlands Rd.
		2002	TBC	Serves the bus stop outside Blk 923 along Yishun Ave 2, skipping the bus stop outside Northpoint Shop Ctr.
		2015	14 March	Amended to Yishun Temp Int.
		2016	12 March	Amended to Woodlands Temp Int.
	856Yishun ↔ Woodlands 856AWoodlands → Woodlands Centre Rd	2017	8 September	856AIntroduced from Woodlands Temp Int to Woodlands Ctr Rd (Woodlands Train Checkpt) on Friday evenings.
			17 September	Designated wheelchair-accessible bus service (WAB).
		2019	21 January	856AEnhanced to operate during evening peak hours from Mondays to Thursdays.
			8 September	Amended to Yishun Integrated Transport Hub.
		2020	31 January	Extended to ply Woodlands Nth Coast Rd with the opening of Woodlands North station.
		2021	13 June	Amended to Woodlands Integrated Transport Hub.
(Current)	Yishun ↔ Woodlands		5 September	Operations transferred to Tower Transit Singapore.
				856ADiscontinued with the commencement of the Sembawang – Yishun Bus Package to Tower Transit Singapore.
		2022	24 April	Amended to ply the realigned Woodlands Nth Coast Rd.
	856Yishun ↔ Woodlands 856AWoodlands → Woodlands Centre Rd 856BWoodlands North Coast Rd → Canberra Rd	2023	25 January	856AReintroduced from Woodlands Int to Woodlands Ctr Rd (Woodlands Train Checkpt) during evening peak hours on weekdays. Wheelchair-accessible bus service (WAB) at launch.
				856BIntroduced from Woodlands Nth Coast Rd (Woodlands Nth Stn) to Canberra Rd (Aft Admiral Hill) during morning peak hours on weekdays. Wheelchair-accessible bus service (WAB) at launch.
	856Yishun ↔ Woodlands 856AWoodlands → Woodlands Centre Rd 856BWoodlands → Canberra Rd	2024	5 August	856BExtended to start from Woodlands Integrated Transport Hub, serving 12 additional bus stops along Woodlands Ave 3, Woodlands Ctr Rd and Admiralty Rd.
	856Yishun ↔ Woodlands 856AWoodlands → Woodlands Centre Rd 856BWoodlands North Coast Rd → Canberra Rd 856CAdmiralty Road → Admiralty Road West	2025	28 July	856CIntroduced from Admiralty Road (Blk 23) to Admiralty Road West (Bef British American Tobacco) during morning peak hours on Weekdays. Wheelchair-accessible bus service (WAB) at launch.

Service 857

1^st Generation (1992 - 1996)

Operator	Route	Year	Date	Service changes
	Yishun ↔ Admiralty Rd West	1992	20 September	Introduced between Yishun Int and Admiralty Rd West Ter under TransitLink Network Integration Exercise Phase 9.
		1996	10 March	Integrated with Service 169 and discontinued under Woodlands MRT Rationalisation.

2^nd Generation (since 2001)

Operator	Route	Year	Date	Service changes
Known as prior to 10 May 2004	Yishun ↺ Temasek Ave	2001	14 January	Introduced between Yishun Int and Temasek Ave (Loop).
		2003	TBC	Skips a pair of bus stops near LP 94 and opposite LP 91 along Lentor Ave.
		2011	16 October	Amended to ply Middle Rd, Selegie Rd, Prinsep St and Bras Basah Rd with the partial closure of Bencoolen St to facilitate the construction of Bencoolen station on the Downtown Line.
		2012	29 April	Designated wheelchair-accessible bus service (WAB).
	857Yishun ↺ Temasek Ave 857AYishun → Yio Chu Kang Rd	2013	12 August	857AIntroduced from Yishun Int to Yio Chu Kang Rd (Opp Sunrise Gdns) during morning peak hours on weekdays. Wheelchair-accessible bus service (WAB) at launch.
		2015	14 March	Amended to Yishun Temp Int and amended to ply Yishun Ctrl 1.
		2016	11 December	Amended to ply the reinstated Bencoolen St, skipping Middle Rd, Selegie Rd, Prinsep St and Bras Basah Rd.
		2019	8 September	Amended to Yishun Integrated Transport Hub and amended to skip Yishun Ctrl 1.
		2020	12 January	Skips a pair of removed bus stops under and after Lentor Flyover along Lentor Ave.
	857Yishun ↺ Temasek Ave 857AYishun → Yio Chu Kang Rd 857BYishun → Temasek Ave	2021	11 April	857BIntroduced from Yishun Int to Temasek Ave (Promenade Stn), operating during morning peak hours on weekdays and after the last bus of Service 857 daily. Wheelchair-accessible bus service (WAB) at launch.
(Current)			5 September	Operations transferred to Tower Transit Singapore.

Service 858

Operator	Route	Year	Date	Service changes
Known as prior to 10 May 2004	Yishun ↔ Woodlands	1996	10 March	Introduced between Yishun Int and Woodlands Reg Int under Woodlands MRT Rationalisation.
			TBC	First bus from Yishun Int brought forward to 0530 hrs on Sundays and Public Holidays. Last bus from Yishun Int extended to 0030 hrs on Sundays and Public Holidays.
			TBC	Last bus from Woodlands Reg Int extended to 0030 hrs on Sundays and Public Holidays.
	Woodlands ↔ Changi Airport	1997	2 November	Extended to Changi Airport and amended to ply Yishun Ave 5, skipping Yishun Ave 3.
		1999	TBC	First bus from Woodlands Reg Int brought forward to 0525 hrs on weekdays.
	858Woodlands ↔ Changi Airport 858AWoodlands → Yishun Ave 2	2000	TBC	858AIntroduced from Woodlands Reg Int to Yishun Ave 2 (Northpoint Shop Ctr), operating after the last bus of Service 858 daily.
			TBC	Serves new pair of bus stops outside and opposite SATS Flight Kitchen along Airport Blvd.
			TBC	Serves new pair of bus stops outside and opposite 3M Bldg along Gambas Ave.
		2001	22 July	Amended to ply Jln Kayu in both directions.
		2002	TBC	Serves the bus stop outside Blk 923 along Yishun Ave 2, skipping the bus stop outside Northpoint Shop Ctr.
	858Woodlands ↺ Changi Airport 858AWoodlands → Yishun Ave 2	2003	TBC	858Converted to loop service between Woodlands Reg Int and Changi Airport PTB 2.
		2007	11 November	Amended to serve Changi Airport PTB 3.
		2010	28 March	Amended to ply Woodlands Ave 7, Sembawang Way, Canberra Rd and Sembawang Rd and Yishun Ctrl 2.
				858First bus brought forward to 0515 hrs daily.
			29 November	Designated wheelchair-accessible bus service (WAB).
		2014	5 October	Serves additional pair of bus stops before and after Punggol Rd along TPE.
	858Woodlands ↺ Changi Airport 858AWoodlands → Yishun Ave 2 858BJln Kayu ↺ Changi Airport → Jln Kayu	2016	1 February	858BIntroduced between Jln Kayu and Changi Airport PTB 2 (Loop) during morning peak hours on weekdays. Wheelchair-accessible bus service (WAB) at launch.
			12 March	Amended to Woodlands Temp Int.
		2021	13 June	Amended to Woodlands Integrated Transport Hub.
(Current)			19 September	Operations transferred to Tower Transit Singapore.

Service 859

Operator	Route	Year	Date	Service changes
Known as prior to 10 May 2004	Yishun ↺ Sembawang Dr	1999	4 April	Introduced between Yishun Int and Sembawang Dr (Loop).
		2000	9 January	Amended to ply Sembawang Dr and Admiralty Dr, skipping Sembawang Way.
		2002	TBC	Serves the bus stop outside Blk 923 along Yishun Ave 2, skipping the bus stop outside Northpoint Shop Ctr.
		2004	24 October	Serves new bus stop between Blks 325 and 326 along Sembawang Cres.
	Sembawang ↔ Yishun	2005	20 November	Extended to Sembawang Int.
		2006	3 December	Amended to ply Sembawang Way and Sembawang Dr.
	859Sembawang ↔ Yishun 859ASembawang → Sembawang Vista	2007	1 October	859AIntroduced as a Short-Trip service from Sembawang Int to Sembawang Vista (Opp Blk 315), operating after the last bus of Service 859 daily.
		2012	15 November	Designated wheelchair-accessible bus service (WAB).
	Sembawang ↔ Yishun	2014	17 August	859AConverted from a short working trip to a full day service.
	Sembawang ↺ Yishun	2015	14 March	Amended to loop at Yishun Temp Int from Sembawang Int.
		2019	8 September	Amended to loop at Yishun Integrated Transport Hub.
	859Sembawang ↺ Yishun 859TSembawang → Yishun	2021	11 April	859TIntroduced from Sembawang Int to Yishun Int, operating after the last bus of Service 859 daily. Wheelchair-accessible bus service (WAB) at launch.
(Current)			3 October	Operations transferred to Tower Transit Singapore.
		2023	17 December	Amended to ply Canberra Rd, Canberra Lk and Sembawang Rd under Thomson-East Coast Line Bus Rationalisation.
				859First bus from Sembawang Int brought forward to 0540 hrs on weekdays and Saturdays, and 0555 hrs on Sundays and Public Holidays.

Service 859A

Operator	Route	Year	Date	Service changes
	Sembawang ↺ Admiralty Link	2014	17 August	Converted from a short working trip to a full day service between Sembawang Int and Admiralty Lk (Loop) under the LTA’s Bus Service Enhancement Programme (BSEP). Wheelchair-accessible bus service (WAB) at launch.
		2016	TBC	First bus brought forward to 0530 hrs daily. Last bus extended to 0055 hrs daily.
		2019	5 October	Last bus extended to 0100 hrs daily.
(Current)		2021	3 October	Operations transferred to Tower Transit Singapore.

Service 859B

Operator	Route	Year	Date	Service changes
	Sembawang ↺ Admiralty Link	2014	17 August	Introduced between Sembawang Int and Admiralty Lk (Loop) under the LTA’s Bus Service Enhancement Programme (BSEP). Wheelchair-accessible bus service (WAB) at launch.
		2016	TBC	Last bus extended to 0055 hrs daily.
(Current)		2021	3 October	Operations transferred to Tower Transit Singapore.

See also

• History of Bus Services