History of Services 71 - 80

Service 71 (1971 - 1992)

Operator	Year	Date	Service changes
ABS	1971	11 April	Introduced between Yio Chu Kang Rd Ter and Lor 5 Geylang Ter under 1971 Bus Reorganisation.
	1975	2 March	Amended to ply Geylang Rd towards Lor 5 Geylang Ter with the conversion of Sims Ave to one-way traffic.
	1977	17 October	Extended to Geylang Fringe Car Pk.
	1979	26 March	Amended to ply Yio Chu Kang Rd, skipping Jln Woodbridge.
		26 October	Amended to Old Upp Thomson Ter.
	1981	5 June	Amended to ply the diverted Yio Chu Kang Rd, skipping Ang Mo Kio Ave 9.
	1992	3 May	Integrated with service 70 and withdrawn under TransitLink Network Integration Exercise Phase 7.

Service 71 (since 2017)

Operator	Year	Date	Service changes
Template:SBS Transit (Current)	2017	9 December	Introduced between Yio Chu Kang Int and Bishan St 11 (Loop) under the LTA's Bus Service Enhancement Programme (BSEP). Wheelchair-accessible at launch.

Service 72 (1971 - 1992)

Operator	Year	Date	Service changes
ABS	1971	11 April	Introduced between Serangoon Gdn Ter and Tg Rhu Ter under 1971 Bus Reorganisation.
	1976	30 December	Amended to ply Sims Ave/Geylang Rd and the extended Tg Katong Rd, skipping Guillemard Rd.
	1977	31 October	Amended to skip Chartwell Dr, Burghley Dr, Berwick Dr, Tavistock Ave, Hemsley Ave and Kensington Pk Rd with the introduction of Service 217.
	1988	13 March	Amended to Serangoon Int.
	1992	3 May	Withdrawn under TransitLink Network Integration Exercise Phase 7.

Service 72 (since 1996)

Operator	Year	Date	Service changes
	1996	TBC	Introduced between Yio Chu Kang Ter and Ang Mo Kio Ave 5 (Loop) as a peak hour service on weekdays.
	1998	TBC	Integrated with Service 80, extended to Tampines Int and converted to full day service.
	2000	TBC	Serves new pair of bus stops outside and opposite Tampines Dormitory along Tampines Ave 10.
Template:SBS Transit (Current)	2002	TBC	Serves new pair of bus stops before and after Tampines Ave 9 along Tampines Ave 10.
	2003	21 June	Amended to ply Hougang Ctrl and Upp Serangoon Rd under North East MRT Line Rationalisation Phase 1.
	2007	22 May	Designated wheelchair-accessible bus service (WAB).
	2009	19 April	Serves new pair of bus stops outside Blk 834 and outside Hougang Polyclinic along Hougang Ave 4.
	2017	24 December	Amended to ply Tampines Ctrl 8 and Tampines Concourse towards Tampines Int.
	2022	27 February	Amended to ply the realigned Tampines Rd, skipping Tampines Lk and a portion of Tampines Ave 10.

Short Trip 72A (2000 - 2006)

Operator	Year	Date	Service changes
	2000	TBC	Introduced from Yio Chu Kang Ter to Upp Serangoon Rd (Opp Nativity Ch Ctr) during evening peak hours on weekdays.
Template:SBS Transit	2003	21 June	Shortened to terminate at Hougang Ctrl (Opp Hougang Ctrl Int) under North East MRT Line Rationalisation Phase 1.
	2006	TBC	Withdrawn.

Short Trip 72A (since 2012)

Operator	Year	Date	Service changes
Template:SBS Transit (Current)	2012	30 July	Introduced from Yio Chu Kang Ter to Hougang Ctrl (Opp Hougang Ctrl Int) during morning peak hours on weekdays. Wheelchair-accessible at launch.

Short Trip 72B

Operator	Year	Date	Service changes
Template:SBS Transit (Current)	2013	2 January	Introduced from Yio Chu Kang Ter to Ang Mo Kio Ave 5 (ITE College Ctrl) during morning peak hours on weekdays. Wheelchair-accessible at launch.

Service 73

Operator	Year	Date	Service changes
	1974	3 February	Re-numbered from Service 73/73A as a service between Toa Payoh Town Ctr Ter and Yio Chu Kang Rd Ter.
	1977	11 July	Amended to ply Yio Chu Kang Rd, skipping Jln Woodbridge.
	1979	26 October	Amended to Old Upp Thomson Ter.
	1980	16 March	Amended to loop at Old Upp Thomson Rd.
	1981	5 June	Amended to ply the realigned Yio Chu Kang Rd, skipping Ang Mo Kio Ave 9.
	1983	6 February	Amended to ply CTE towards Old Upp Thomson Rd with the closure of temporary slip road between Braddell Rd and Lor Chuan.
		20 June	Amended back to ply Lor Chuan towards Old Upp Thomson Rd with the opening of new link road between Braddell Rd and Lor Chuan under Braddell Flyover.
		26 December	Amended to Toa Payoh Int.
	1988	24 January	Shortened to Yio Chu Kang Ter.
	1992	20 September	Amended to loop at Serangoon Nth Ave 4 from Toa Payoh Int under TransitLink Network Integration Exercise Phase 9.
	1993	5 December	Extended to Ang Mo Kio Int under TransitLink Network Integration Exercise Phase 14.
	1998	31 May	Amended to Toa Payoh Temp Int.
			Serves new pair of bus stops outside and opposite Toa Payoh Swim Cplx along Lor 6 Toa Payoh.
Template:SBS Transit (Current)	2002	24 March	Amended to Ang Mo Kio Temp Int.
		19 May	Amended to loop at Toa Payoh Integrated Transport Hub from Ang Mo Kio Temp Int.
	2005	19 February	Serves additional pair of bus stops outside Jubilee and opposite Blk 710 along Ang Mo Kio Ave 8.
	2007	28 April	Amended to Ang Mo Kio Integrated Transport Hub.
	2012	3 December	Designated wheelchair-accessible bus service (WAB).

Service 73/73A (1971 - 1974)

Operator	Year	Date	Service changes
ABS	1971	16 June	Introduced between Yio Chu Kang Rd Ter and Tg Pagar Ter.
	1972	18 June	Amended to ply Bendemeer Rd towards Tg Pagar Ter with the conversion of Serangoon Rd to one-way traffic.
	1974	3 February	Shortened to Toa Payoh Town Ctr Ter and re-numbered Service 73 under 1974 Bus Rationalisation.

Service 74

Operator	Year	Date	Service changes
	1979	16 July	Introduced between Ang Mo Kio Ave 6 Ter and Clementi Ave 3 Ter.
		TBC	Amended to Ang Mo Kio Ave 3 Ter.
	1980	16 November	Amended to Clementi Int.
	1981	5 July	Amended to Ang Mo Kio Ctrl 2 Ter.
	1983	10 April	Amended to Ang Mo Kio Int.
	1987	12 August	Skips abolished bus stop after Joan Rd along Lornie Rd.
	1988	8 March	Amended to ply Clementi Ave 3 with the abolition of right turning from Clementi Ave 3 to Commonwealth Ave West.
	1990	21 February	Skips abolished bus stop opposite Jasmine Rd along Upp Thomson Rd.
		10 June	Extended to Upp Serangoon Ter and amended to ply Ang Mo Kio Ave 6 and Marymount Rd, skipping Ang Mo Kio Ave 1.
	1991	28 April	Amended to ply Clementi Ave 2 towards Clementi Int under TransitLink Network Integration Exercise Phase 4.
	1993	5 December	Integrated with Service 202 and amended to Buona Vista Ter under TransitLink Network Integration Exercise Phase 14.
	1994	17 December	Amended to Hougang Ctrl Int.
	1999	TBC	Skips temporarily abolished bus stops outside and opposite Sch of Mechanical & Mfg along Commonwealth Ave West.
	2001	18 October	Serves reinstated bus stops outside Dover Stn along Commonwealth Ave West.
Template:SBS Transit (Current)	2006	TBC	Serves merged bus stop opposite Buona Vista Stn along Nth Buona Vista Rd with the closure of the staggered bus stop.
	2014	29 September	Designated wheelchair-accessible bus service (WAB).
	2018	28 October	Amended to ply southbound Lornie Highway towards Buona Vista Ter.
	2019	23 June	Amended to ply northbound Lornie Highway towards Hougang Ctrl Int.

Service 74A (1994 - 1995)

Operator	Year	Date	Service changes
	1994	19 June	Introduced between Upp Serangoon Ter and Ang Mo Kio Ave 3 (Ang Mo Kio Stn) as a route variant of Service 74.
		17 December	Amended to Hougang Ctrl Int.
	1995	8 January	Integrated with Service 165 and withdrawn.

Short Trip 74A (2000 - 2005)

Operator	Year	Date	Service changes
	2000	TBC	Introduced from Hougang Ctrl Int to Clementi Rd (Opp Ngee Ann Poly) during morning peak hours on weekdays.
Template:SBS Transit	2005	TBC	Withdrawn.

Service 75

Operator	Year	Date	Service changes
	1981	15 June	Introduced between Clementi Int and Anson Rd Ter as a peak hour semi-express service on weekdays and Saturdays, replacing the deleted sectors of Service 191.
		22 September	Extended to loop at Empress Pl.
		11 October	Serves staggered bus stop outside Tunas Bldg along Anson Rd, skipping the bus stop outside Intl Plaza.
	1984	10 June	Amended to ply Connaught Dr, Collyer Quay, Raffles Quay, Shenton Way, Cantonment Lk, Cantonment Rd, Outram Rd, Tiong Bahru Rd, Zion Rd and Hoot Kiam Rd towards Clementi Int and converted to full day trunk service, skipping St. Andrew's Rd, Coleman St, Canning Rise, Oxley Rise and Exeter Rise.
	1986	14 September	Skips the bus stop outside Tanglin Police Stn along Napier Rd.
		30 November	Extended to Marina Ctr Ter.
	1987	6 April	Skips abolished bus stop before College Rd along Outram Rd.
	1988	8 March	Amended to ply Clementi Ave 3 with the abolition of right turning from Clementi Ave 3 to Commonwealth Ave West.
		31 July	Extended to Choa Chu Kang Ter.
		25 August	Amended to ply Choa Chu Kang Ave 1 with the completion of the road junction between Teck Whye Ave and Choa Chu Kang Ave 1.
	1990	10 March	Extended to interim terminal along Choa Chu Kang Ave 4.
		8 April	Amended to Choa Chu Kang Int.
		16 December	Amended to ply Choa Chu Kang Way, skipping Choa Chu Kang Dr.
	1993	3 January	Shortened to Bt Panjang Ter with the introduction of Service 179 under TransitLink Network Integration Exercise Phase 11.
	1995	6 August	Operations transferred to TIBS.
	1999	26 December	Amended to Bt Panjang Int.
	2000	TBC	Serves additional bus stop outside Clifford Ctr along Collyer Quay.
	2003	12 October	Serves bus stop opposite Bt Timah Plaza along Jln Anak Bt with the abolition of the bus stop under the PIE Flyover.
Template:SMRT Buses (Current)	2005	2 July	Serves bus stop outside Fullerton Sq along Fullerton Rd with the abolition of the bus stop outside Clifford Ctr along Collyer Quay.
		30 October	Serves new bus stop outside Blk 94 along Zion Rd.
	2010	23 May	Skips temporarily abolished bus stop outside Assumption Voc Inst along Upp Bt Timah Rd to facilitate the construction of Cashew MRT station along the Downtown MRT Line.
	2011	3 July	Serves additional pair of bus stops opposite Min of Defence and before Cashew Rd along Upp Bt Timah Rd.
	2012	1 July	Designated wheelchair-accessible bus service (WAB).
		16 December	Extended to start from and terminate at Bt Panjang Rd with the opening of Bt Panjang Temp Bus Pk and the closure of Bt Panjang Int.
	2015	1 March	Serves reinstated bus stop outside Assumption Pathway Sch along Upp Bt Timah Rd, skipping a pair of bus stops opposite Ministry of Defence and before Cashew Rd.
	2016	1 May	Amended to ply Esplanade Dr with the partial closure of Fullerton Rd.
	2017	4 September	Serves additional pair of bus stops outside and opposite Ten Mile Junction Stn along Woodlands Rd.
			Serves a pair of bus stops outside and opposite Blk 180 along Jelebu Rd, skipping the pair of bus stops outside and opposite Bt Panjang Plaza.
	2021	23 January	Extended to Gali Batu Ter, serving 2 additional pairs of bus stops after KJE Slip Rd, Blk 632 CP, opposite Blk 632 CP and opposite Blk 635A along Woodlands Rd.
		24 February	Amended to the relocated Marina Ctr Ter.
		11 April	Amended to ply the extended southbound Upp Bt Timah Rd towards Marina Ctr Ter, skipping Jln Anak Bt.
		26 December	Amended to ply Esplanade Dr towards Gali Batu Ter with the closure of Connaught Dr.

Short Trip 75A (2013 - 2021)

Operator	Year	Date	Service changes
Template:SMRT Buses	2013	29 July	Introduced from Bt Panjang Rd (Blk 604) to Clementi Rd (Opp SIM HQ) during morning peak hours on weekdays. Wheelchair-accessible at launch.
	2015	1 March	Serves reinstated bus stop outside Assumption Pathway Sch along Upp Bt Timah Rd, skipping a pair of bus stops opposite Min of Defence and before Cashew Rd.
	2017	4 September	Extended to start from Woodlands Rd (Opp Ten Mile Junction Stn).
			Serves the bus stop outside Blk 180 along Jelebu Rd, skipping the bus stop outside Bt Panjang Plaza.
	2021	23 January	Extended to Gali Batu Ter, serving 2 new bus stops after KJE Slip Rd and outside Blk 632 CP.
		11 April	Withdrawn with the route amendment of Service 75 to the extended southbound Upp Bt Timah Rd.

Service 76 (1981 - 1988)

Operator	Year	Date	Service changes
	1981	24 November	Introduced between Clementi Int and Jurong East Ctrl (Loop).
	1982	12 September	Amended to ply Jurong East Ctrl, Jurong East Ave 1 and Jurong Town Hall Rd.
	1985	30 June	Amended to start from Jurong East Int and loop at Clementi Int.
	1988	13 March	Withdrawn with the route extension of Service 99 to Clementi Int.

Service 76 (since 1989)

Operator	Year	Date	Service changes
	1989	5 March	Introduced between Yio Chu Kang Ter and Marine Parade Ter.
	1992	3 May	Amended to ply Paya Lebar Rd, Tg Katong Rd, Amber Rd and Marine Parade Rd under TransitLink Network Integration Exercise Phase 7, skipping Ubi Ave 2, Eunos Link, Jln Eunos, Still Rd and Still Rd Sth.
	2001	16 September	Amended to loop at Siglap Rd from Yio Chu Kang Ter with the closure of Marine Parade Ter.
Template:SBS Transit (Current)	2003	16 March	Amended to ply Eunos Ave 5 and Eunos Rd 8 with the partial closure of Paya Lebar Rd to facilitate the construction of Paya Lebar MRT station on the Circle MRT Line.
		TBC	Serves new bus stop outside Victoria Sch along Marine Parade Rd.
		TBC	Serves new bus stop outside Shell Kiosk along Tg Katong Rd.
	2007	22 May	Designated wheelchair-accessible bus service (WAB).
	2009	23 August	Amended to ply the reinstated Paya Lebar Rd, skipping Eunos Ave 5 and Eunos Rd 8.
	2011	30 January	Shortened to loop at Marine Terr, skipping Siglap Rd.
	2013	22 September	Serves new bus stop outside Wisma AUPE along Upp Paya Lebar Rd.
	2016	20 March	Shortened to Eunos Int with the introduction of Service 134.

Short Trip 76A (2001 - 2016)

Operator	Year	Date	Service changes
	2001	16 September	Introduced from Yio Chu Kang Ter to Siglap Rd (Opp Mandarin Gdns), operating after the last bus of Service 76 daily.
Template:SBS Transit	2003	16 March	Amended to ply Eunos Ave 5 and Eunos Rd 8 with the partial closure of Paya Lebar Rd to facilitate the construction of Paya Lebar MRT station on the Circle MRT Line.
		TBC	Serves new bus stop outside Shell Kiosk along Tg Katong Rd.
	2005	TBC	Extended to terminate at Marine Parade Rd (Victoria Sch).
	2007	22 May	Designated wheelchair-accessible bus service (WAB).
	2009	23 August	Amended to ply the reinstated Paya Lebar Rd, skipping Eunos Ave 5 and Eunos Rd 8.
	2011	30 January	Shortened to terminate at Marine Terr (Opp CHIJ Katong Convent).
	2016	20 March	Withdrawn with the route amendment of Service 76 to Eunos Int.

Service 77 (1980 - 1986)

Operator	Year	Date	Service changes
	1980	17 August	Introduced between Ang Mo Kio Ave 3 Ter and Bendemeer Rd (Loop).
	1981	5 July	Amended to Ang Mo Kio Ctrl 2 Ter.
	1983	10 April	Amended to Ang Mo Kio Int.
	1986	16 March	Integrated with Service 162 and withdrawn.

Service 77 (since 1995)

Operator	Year	Date	Service changes
	1995	TBC	Introduced between Marina Ctr Ter and Farrer Rd (Loop).
	1996	TBC	Extended to Bt Batok Int, skipping Farrer Rd.
	1998	TBC	Serves new pair of bus stops outside and opposite Highgate Condo along Toh Tuck Rd.
	2000	18 June	Operations transferred to TIBS.
	2002	7 July	Skips the bus stop outside Orchard Emerald along Orchard Rd.
	2003	TBC	Serves new bus stop outside Goh & Goh Bldg along Jln Jurong Kechil.
Template:SMRT Buses	2005	2 July	Amended to ply Grange Rd with the partial closure of Somerset Rd.
	2012	1 July	Designated wheelchair-accessible bus service (WAB).
		9 December	Amended to ply Upp Bt Timah Rd and Bt Timah Lk with the partial closure of Jln Jurong Kechil to facilitate the construction of Beauty World MRT station on the Downtown MRT Line.
	2014	26 January	Amended to ply the reinstated Jln Jurong Kechil, skipping Upp Bt Timah Rd and Bt Timah Lk.
(Current)	2016	29 May	Operations transferred to Tower Transit Singapore.
	2021	27 February	Amended to the relocated Marina Ctr Ter.

Short Trip 77A (2000 - 2009)

Operator	Year	Date	Service changes
	2000	TBC	Introduced from Bt Batok Int to Toh Tuck Rd (Good Luck View) during morning peak hours on weekdays.
Template:SMRT Buses	2009	2 January	Withdrawn.

Service 78 (1980 - 1983)

Operator	Year	Date	Service changes
	1980	16 November	Introduced between Clementi Int and Commonwealth Ave (Loop).
	1983	28 February	Withdrawn.

Service 78 (since 1988)

Operator	Year	Date	Service changes
	1988	19 June	Introduced between Jurong East Int and Clementi Ave 3 (Loop).
	1990	1 July	Integrated with Service 245 and amended to ply Pandan Rd with the opening of Boon Lay Int.
	2001	TBC	Serves additional bus stop outside Blk 131 along Jurong East St 13.
		TBC	Amended to ply West Coast Rd with the partial closure of Teban Gdns Rd.
Template:SBS Transit	2002	12 May	Amended to ply West Coast Rd towards Jurong East Int, skipping eastbound Teban Gdns Rd.
	2004	4 September	Amended to ply Pandan Ave towards Clementi Ave 3.
	2005	3 April	Amended to ply West Coast Rd towards Clementi Ave 3, skipping westbound Teban Gdns Rd.
	2009	5 July	Amended to ply Boon Lay Way and Jurong East Ctrl with the closure of Jurong East St 12 to facilitate the Jurong East Modification Project (JEMP).
	2011	17 December	Amended to Jurong East Temp Int.
	2012	25 June	Designated wheelchair-accessible bus service (WAB).
(Current)	2016	12 June	Operations transferred to Tower Transit Singapore.
	2020	6 December	Amended to start from and terminate at Jurong Gateway Rd with the relocation of Jurong East Temp Int.

Short Trip 78A

Operator	Year	Date	Service changes
Template:SBS Transit	2013	4 March	Introduced from Jurong East Temp Int to Tg Penjuru (Opp ECS Freight Svcs) during morning peak hours on weekdays. Wheelchair-accessible at launch.
(Current)	2016	12 June	Operations transferred to Tower Transit Singapore.
	2020	6 December	Amended to start from Jurong Gateway Rd with the relocation of Jurong East Temp Int.

Service 79 (1983 - 1984)

Operator	Year	Date	Service changes
	1983	27 February	Introduced between Jurong East Ter and Nth Bridge Rd (Loop).
	1984	1 July	Integrated with Service 147 and withdrawn.

Service 79 (1985 - 1988)

Operator	Year	Date	Service changes
	1985	30 June	Introduced between Jurong East Int and Empress Pl (Loop).
	1986	30 November	Extended to Marina Ctr Ter.
	1988	3 January	Serves staggered bus stop opposite Treasury Bldg along Shenton Way, skipping the bus stop opposite Marina Hse.
		11 January	Serves merged bus stop along Ayer Rajah Rd.
		18 December	Integrated with Service 97 and withdrawn.

Service 79 (since 1992)

Operator	Year	Date	Service changes
	1992	24 May	Introduced between Jurong East Int and Boon Lay Int (Loop).
	1995	15 January	Amended to ply Jln Boon Lay, Chin Bee Dr, Quality Rd, Chin Bee Ave, Third Chin Bee Rd and Intl Rd with the route amendment of Service 246, skipping Boon Lay Way.
	2001	TBC	Serves additional bus stop outside Blk 131 along Jurong East St 13.
		TBC	Amended to ply West Coast Rd with the partial closure of Teban Gdns Rd.
Template:SBS Transit	2006	18 June	Amended to loop at Boon Lay Temp Int.
	2009	5 July	Amended to ply Boon Lay Way and Jurong East Ctrl with the closure of Jurong East St 12 to facilitate the Jurong East Modification Project (JEMP).
		27 December	Amended to loop at Boon Lay Integrated Transport Hub.
	2011	17 December	Amended to Jurong East Temp Int.
	2012	25 June	Designated wheelchair-accessible bus service (WAB).
(Current)	2016	12 June	Operations transferred to Tower Transit Singapore.
		23 October	Serves an additional pair of bus stops before and after Penjuru Rd along Jln Buroh.
	2020	6 December	Amended to start from Boon Lay Int and loop at Jurong Gateway Rd with the relocation of Jurong East Temp Int.
	2023	8 January	To be amended to ply realigned Teban Gdns Rd with the permanent partial closure of Teban Gdns Rd to facilitate the construction of Pandan Reservoir MRT station on the Jurong Region MRT Line, skipping the bus stop before Pandan Gdns along Jurong Town Hall Rd.

Short Trip 79A

Operator	Year	Date	Service changes
(Current)	2016	12 June	Introduced from Jurong East Temp Int to Boon Lay Int, operating after the last bus of Service 79 daily. Wheelchair-accessible at launch.
		23 October	Serves an additional bus stop after Penjuru Rd along Jln Buroh.
	2020	6 December	Amended to start from Boon Lay Int and terminate at the bus stop outside Jurong East Lib along Jurong Town Hall Rd with the amendment of Service 79 to loop at Jurong Gateway Rd due to the relocation of Jurong East Temp Int.
	2023	8 January	To be amended to ply realigned Teban Gdns Rd with the permanent partial closure of Teban Gdns Rd to facilitate the construction of Pandan Reservoir MRT station on the Jurong Region MRT Line.

Service 80 (1971 - 1985)

Operator	Year	Date	Service changes
ABS	1971	11 April	Introduced between Upp Changi Rd Ter and Prince Edward Ter under 1971 Bus Reorganisation.
	1972	18 June	Amended to ply Bendemeer Rd towards Prince Edward Ter with the conversion of Serangoon Rd to one-way road.
	1974	8 December	Amended to skip Market St.
	1976	15 February	Serves staggered bus stop between Bank of India and Hong Leong Holdings along Robinson Rd.
		14 March	Serves staggered bus stop outside The Cenotaph along Connaught Dr, skipping the bus stop opposite Singapore Cricket Club.
	1978	15 January	Amended to ply Jln Sultan, skipping Sumbawa Rd.
	1979	11 February	Amended to ply the extended Shenton Way, Palmer Rd and Anson Rd, skipping Parsi Rd.
	1985	TBC	Withdrawn.

Service 80 (1996 - 1998)

Operator	Year	Date	Service changes
	1996	3 September	Introduced between Tampines Int and Hougang Ctrl Int.
	1998	TBC	Integrated with Service 72 and withdrawn.

Service 80 (since 1999)

Operator	Year	Date	Service changes
	1999	12 December	Introduced between Sengkang Ter and World Trade Ctr Ter with the integration of Services 84 and 864.
	2001	28 April	Amended to Sengkang Temp Int.
Template:SBS Transit (Current)	2003	18 January	Amended to Sengkang Integrated Transport Hub.
		20 June	Serves new bus stop opposite Hougang Ctrl Int along Hougang Ctrl.
	2006	29 October	Serves new bus stop outside VivoCity along Telok Blangah Rd.
	2007	20 August	Designated wheelchair-accessible bus service (WAB).
	2008	7 December	Skips abolished bus stop opposite Temenggong D Mque along Telok Blangah Rd.
	2013	22 September	Serves new bus stop outside Wisma AUPE along Upp Paya Lebar Rd.
	2019	23 June	Amended to ply Cantonment Lk and Cantonment Rd towards Sengkang Int.
			Serves new bus stop outside Tower 15 along Hoe Chiang Rd.
	2022	28 August	Temporarily amended to ply Hougang Ave 4 and Hougang Ave 10 with the partial closure of Hougang Ctrl to facilitate the construction of Hougang MRT station on the Cross Island MRT Line.

Service 80A (1971 - 1974)

Operator	Year	Date	Service changes
ABS	1971	11 April	Introduced between Upp Serangoon Rd 10.5 km Ter and Prince Edward Ter under 1971 Bus Reorganisation.
	1972	18 June	Amended to ply Bendemeer Rd towards Prince Edward Ter with the conversion of Serangoon Rd to one-way road.
	1974	3 February	Withdrawn under 1974 Bus Rationalisation.

Short Trip 80A (since 2000)

Operator	Year	Date	Service changes
	2000	TBC	Introduced from Sengkang Ter to Aljunied Rd (Aljunied Stn) during morning peak hours on weekdays.
	2001	28 April	Amended to Sengkang Temp Int.
Template:SBS Transit (Current)	2003	18 January	Amended to Sengkang Integrated Transport Hub.
		20 June	Serves new bus stop opposite Hougang Ctrl Int along Hougang Ctrl.
	2007	20 August	Designated wheelchair-accessible bus service (WAB).
	2022	28 August	Temporarily amended to ply Hougang Ave 10 and Hougang Ave 4 with the partial closure of Hougang Ctrl to facilitate the construction of Hougang MRT station on the Cross Island MRT Line.