Loop routes (or circular routes) are a unique form of bus routing. As its name suggests, a loop route only has one terminus, unlike bi-directional routes or uni-directional routes with no return trips. Buses leave the terminus and complete their route by returning back to the same terminus. Loop routes provide continuous bus service along a longer stretch of road compared to an ordinary bi-directional route. Technically, passengers can pay a fare for the full route and return back to the originating bus terminus. However, some exceptions do exist, and passengers may be required to alight at the looping point.
The point where a loop service turns back towards its starting point (and merges with its own forward route), is known as a looping point. After the looping point, buses resume their return route back to the bus terminus. Looping points can be named after street names (e.g. Changi North Crescent) or places of interest near the looping point (e.g. Singapore Zoo). However, not all loop routes have a defined looping point.
Some special cases do exist with loop routes. For example, some bi-directional trunk routes operate like loop routes, and drivers do not park their buses nor get a layover at the bus interchange / terminal. Some loop routes have multiple en-route looping points, and some have looping points within restricted areas.
EDS Programming for Loop Services
Selected loop services, such as long distance looping trunk services, have their Electronic Display Systems (EDS) programmed with both directions of the loop route (similar to bi-directional trunk services) and bus drivers will switch the directions on their EDS at the looping point.
However, most short distance looping trunk and feeder services have an EDS display of both the terminus and the looping point, hence eliminating the need for switching the EDS display.
Basic plus bus services operated by SBS Transit only have a single EDS display, indicating the service type and service number (i.e. EXPRESS 502). Looping short trip services adopt similar EDS displays as uni-directional short trip services (i.e. Ends at / Terminates at destination, with the exception of full day short trip Bus Services 912A and 912B.
Most looping terminating trips of their parent services also adopt similar EDS displays as uni-directional short trips (i.e. Ends at / Terminates at destination), except SBS Transit Bus Services 291 and 293.
| EDS Programming Type | Operator | Bus Service(s) |
| Dual Direction EDS Display (Similar to bi-directional trunk services) |
SBS Transit (> Looping Point / Destination) |
9, 19, 24, 27, 35, 35M, 53, 60, 63, 64, 69, 73, 89, 125, 138, 158, 160, |
| SMRT Buses (Looping Point / Destination via) |
110, 180, 184, 925M, |
|
| Tower Transit (Looping Point / Destination) |
41, 49, 66, 78, 79, 98, 98M, 171, 173, 177, 183, 189, 857, 858, 859, 861, 871, 883, 883M, 965, 966, 990 | |
| Go-Ahead (Looping Point / Destination via) |
15, 34, 36, 43M, 62, 68, 82, 83, 119, 518 | |
| Single Direction EDS Display (Origin – Looping Point) |
SBS Transit (Origin – Looping Point) |
4, 11, 20, 23, 29, 37, 40, 42, 47, 70M, 71, 81, 90, 91, 92, |
| SMRT Buses (Destination via Looping Point) | 300, 301, 302, 307, 307A, 307T, |
|
| Single Direction EDS Display (Destination only) |
SBS Transit (> Destination) |
225G, 225W, 228, 229, 231, 232, 235, 238, 240, 241, 242, 243G, 243W, 246, 249, 252, 261, 262, 269, 272, 273, |
| SMRT Buses (Destination) | ||
| Tower Transit (Destination) | 96, 143M, 282, 284, 285, 333, 334, 335, 801, 859A, 859B, 882, 941, |
|
| Go-Ahead (Destination via) | 6, 36B, 84G, 84W, 354, 358, 359, 381, 382G, 382W, 384, 386, 403 | |
| Single Direction EDS Display (Looping Point only) |
SBS Transit (> Looping Point) |
291/291T, 293/293T, 325, 811, 812 |
| Service Type EDS Display ( |
SBS Transit (Service Type, Service No.) |
|
| SMRT Buses (Service Type, Service No.) | 502 | |
| Short Trip / Terminating Trip Programming (Ends at / Terminates at destination) |
SBS Transit (Terminates at destination) | 90A, 92T, 113A, 142A, 158A, 195A, 222B, 811T, 812T, 974A |
| SMRT Buses (Ends at destination) | 302A, 911T, 913T | |
| Tower Transit (Ends at destination) | 858B | |
| Go-Ahead (Destination) | 34B, 36T, 358T, 359T |
Listed below are a few types of loop routes in Singapore. Some bus routes may fall under multiple categories:
1. Looping at bus interchange / terminal
Some loop routes loop at bus interchanges or terminals, without having any layover there. This is usually because they need to quickly return to their originating terminus without making unnecessary layovers, or to avoid the need for setting up a driver’s kiosk there when the bus company does not operate any other routes into that interchange or terminal.
Existing Bus Services looping at bus interchanges / terminals
| Service | Looping Bus Interchange / Terminal | Remarks |
| 29 | Changi Village Ter (from Tampines Int) | Since 29 Nov 1992. Permanently shortened to loop at Changi Village Ter from 23 Jan 1994. |
| 60 | Bedok Int (from Eunos Int) | Since introduction (17 Nov 2002) |
| 68 | Tampines Int (from Pasir Ris Int) | Since introduction (1 Apr 2018) |
| 69 | Bedok Int (from Tampines Int) | Since introduction (18 Sep 1995) |
| 73 | Toa Payoh Int (from Ang Mo Kio Int) | Since 19 May 2002 |
| 79 | Boon Lay Int (from Jurong Town Hall Int) | Since 26 May 2024 |
| 83 | Sengkang Int (from Punggol Temp Int) | Since 30 Nov 2003 |
| 173 | Clementi Int (from Bt Batok Int) | Since 1993 |
| 180 | Bt Panjang Int (from Boon Lay Int) | Since 25 Feb 2018 |
| 200 | Kent Ridge Ter (from Buona Vista Ter) | Since 17 Dec 2006 |
| 859 | Yishun Int (from Sembawang Int) | Since 14 Mar 2015 |
| 860 | Yishun Int (from Yio Chu Kang Int) | Since 23 Jan 2022 |
| 965 | Sengkang Int (from Woodlands Temp Int) | Since 11 Sep 2005 |
Former Bus Services looping at bus interchanges / terminals
| Service | Looping Bus Interchange / Terminal | Remarks |
| 17 | Bedok Int (from Pasir Ris Int) | Since 7 Apr 2002. Reverted back to bi-directional service under Go-Ahead Singapore operations on 18 Sep 2016. |
| 17A | Bedok Int (from Bedok Nth Depot) | Since 16 Nov 2014. Reverted back to one-directional service under Go-Ahead Singapore operations on 18 Sep 2016. |
| 18 | Bedok Int (from Tampines Concourse Int) | Since 29 Nov 1987. Extended to terminate at Tampines Concourse on 18 Dec 2016. Extended to terminate at Tampines Nth and Bedok Nth Depot on 27 Nov 2022. |
| 28 | Bedok Int (from Tampines Int) | Since introduction (2 Oct 1994). Extended to terminate at Toa Payoh on 29 Oct 2000. |
| 95 | Kent Ridge Ter (from Buona Vista Ter) | Since 23 Jul 2001. Amended to start from Kent Ridge and loop at Holland Rd on 17 Dec 2006. |
| 189 | Kent Ridge Ter (from Bt Batok Int) | Since 15 Apr 2001. Amended to loop at Clementi Ave 1 on 23 Nov 2014. |
| Joo Koon Int (from Boon Lay Int) | Since introduction (28 Nov 2015). Discontinued on 18 Jun 2017. | |
| 258 | Boon Lay Int (from Joo Koon Int) | Since introduction (21 Nov 2015). Amended to loop at Jurong West St 64 on 18 Jun 2017. |
2. Point loop routes
Let’s have a service from point A and looping at point B. Because of geographical limitations (e.g. no space for a bus terminus) or for various operational reasons when the bus should return to point A as quickly as possible, the service will be operated as a loop route. Point loop routes routes are characterized by a single looping point (e.g. a roundabout / three point turn) and heavy duplication of their forward and return journeys. Most loop routes in Singapore fall under this category.
Existing point loop routes
| Service | Looping Point | Remarks |
| 11 | Rhu Cross (Roundabout) | Since 8 Jun 2014 |
| 15 | Marine Parade Rd (Roundabout) | Since 5 Oct 1997 |
| 35 | Alps Ave (Roundabout) | Since 15 Dec 2014 |
| 35M | Tanah Merah Ferry Ter (3 point turn) | Since 15 Dec 2014 |
| 37 | Changi Nth Cres (3 point turn) | Since introduction (15 Jul 1996) |
| 42 | Fidelio St/Aida St (3 point turn) | Since introduction (5 Oct 1997) |
| 90 | Airport Rd (Roundabout) | Since introduction (23 May 1993) |
| 91 | Ayer Rajah Cres (3 point turn) | Since introduction (13 Feb 1995) |
| 92 | Science Pk Dr (3 point turn) | Since 26 Nov 2007 |
| 94 | Airport Rd (Roundabout) | Since introduction (5 Nov 1989) |
| 98 | Jurong Pier Way (Roundabout) | Since 2004 |
| 102 | Seletar Aerospace Ave (3 point turn) | Since 14 Oct 2018 |
| 138 | Mandai Lake Rd (Roundabout) | Since introduction (26 Apr 1994) |
| 140 | St. Wilfred Rd (Roundabout) | Since introduction (14 Dec 2014) |
| 158 | Rhu Cross (Roundabout) | Since 3 May 1992 |
| 181 | Jurong West Ave 3 (3 point turn) | Since introduction (9 Jan 2005) |
| 183 | Science Pk Rd (3 point turn) | Since 3 Oct 2005 |
| 191 | Portsdown Rd (Roundabout) | Since introduction (29 May 1988) |
| 194 | Pioneer Circus (Roundabout) | Since 12 Dec 2015 |
| 230 | Kim Keat Ave (3 point turn) | Since introduction (24 Sep 2023) |
| 235 | Toa Payoh Lk (Roundabout) | Since 11 Mar 2012 |
| 247 | Tuas Bay Lk (Roundabout) | Since introduction (18 Jun 2017) |
| 248M | Tuas Sth Way (3 point turn) | Since introduction (26 Sep 2021) |
| 249 | Jln Samulun (3 point turn) | Since introduction (1 Jun 1978) |
| 284 | Clementi Ave 4 (Roundabout) | Since introduction (16 Jul 1979) |
| 296 | Tampines Nth Dr 2 (Roundabout) | Since introduction (28 Apr 2024) |
| 301 | Keat Hong Cl (Roundabout) | Since 3 Jan 2016 |
| 354 | Jln Loyang Besar (3 point turn) | Since 25 Apr 2010 |
| 381 | Punggol East (Roundabout) | Since introduction (12 Mar 2017) |
| 400 | Marina Bay Cruise Ctr | Since 16 Jun 2019 |
| 403 | Pasir Ris Rd (Roundabout) | Since 18 May 1990 |
| 405 | Old Choa Chu Kang Rd (3 point turn) | Since introduction (18 Jul 1993) |
| 882 | Sembawang Rd End (3 point turn) | Since introduction (20 Nov 2005) |
| 927 | Mandai Lake Rd (Roundabout) | Since 28 Apr 1996 |
| 962 | Admiralty St (Roundabout) | Since introduction (24 Jun 2001) |
| 966 | Marine Parade Rd (Roundabout) | Since introduction (16 Nov 2003) |
Former point loop routes
| Service | Looping Point | Remarks |
| 82 | Punggol Rd End (3 point turn) | Since 7 Dec 2003. Shortened to terminate at Punggol Temp Int from 3 Sep 2011. |
| 83 | Punggol Field (3 point turn) | Since introduction (23 Dec 2001). Extended to Punggol Temp Int from 30 Nov 2003. |
| 84 | New Punggol Rd (3 point turn) | Since 17 Dec 2023. Converted to bi-directional service from 23 Jun 2024. |
| Nepal Circus (Roundabout) | Since introduction (30 Aug 2015). Merged with Service 92 on 25 Aug 2024. | |
| 101 | Buangkok Lk (3 point turn) | Since introduction (15 Feb 2004). Amended to loop at Buangkok Cres from 25 Aug 2019. |
| West Camp Rd (Roundabout) | Since 7 Dec 2003 (as Service 103W). Merged with Service 103 on 13 Feb 2011. | |
| Bt Purmei Ave (Roundabout) | Since introduction (25 Aug 2014). Discontinued on 12 Dec 2022. | |
| 136 | Upp Serangoon Rd End (3 point turn) | Since 1 Jan 2001. Extended to loop at Punggol Ctrl from 17 Feb 2002. |
| 189 | West Coast Ferry Ter (3 point turn) | Since 6 May 1995. Shortened to loop at Kent Ridge from 15 Apr 2001. |
| 251 | Refinery Rd (3 point turn) | Since introduction (1 Jun 1978). Extended to loop at Benoi Rd from 11 Feb 2001. |
| 268 | Ang Mo Kio Ind Pk 2 (3 point turn) | Since introduction (20 Apr 1997). Extended to loop at Ang Mo Kio Ave 5 from 24 Mar 2002. |
| Bt Purmei Ave (Roundabout) | Since introduction (19 Aug 1984). Discontinued on 25 Aug 2014. | |
| Marina Bay Cruise Ctr | Since 21 Apr 2013. Merged with Service 400 on 16 Jun 2019. | |
| Port Rd (3 point turn) | Since introduction (12 Mar 2005). Discontinued on 1 Aug 2016. | |
| 804 | Yishun Ave 1 (3 point turn) | Since 26 Jun 1988. Amended to loop at Yishun Ave 11 from 25 Apr 2004. |
| 870 | Plantation Cres (3 point turn) | Since introduction (26 Nov 2023). Extended to loop at Tengah Blvd from 24 Dec 2023. |
| Mandai Lake Rd (Roundabout) | Since introduction (1 May 1988). Discontinued on 30 Jun 2022. | |
| 983 | Keat Hong Cl (Roundabout) | Since introduction (25 Apr 2015). Extended to loop at Bt Panjang Rd from 27 Dec 2015. |
| 992 | Plantation Cres (3 point turn) | Since introduction (24 Sep 2023). Extended to loop at Tengah Blvd from 24 Dec 2023. |
| Clementi Ave 4 (Roundabout) | Since introduction (21 Jan 2005). Discontinued on 1 Sep 2016. |
3. Area loop routes
Let’s have a service from point A and looping at point B. Because of geographical limitations (e.g. no space for a bus terminus) or for various operational reasons when the bus should return to point A as quickly as possible, the service will be operated as a loop route. Area loop routes do not loop around a point, but over an small area instead, using multiple turns at various junctions. They are characterized by heavy duplication of their forward and return journeys. Most loop routes in Singapore fall under this category.
Existing area loop routes
Note: Roads in italics denote express sectors.
| Service | Looping Route | Remarks |
| 4 | Upp Changi Rd Nth, Changi Nth St 1, Changi Nth Way, Tanah Merah Besar Rd | Since introduction (17 Mar 2013) |
| 6 | Loyang Way, Loyang Cres | Since introduction (25 Oct 1993) |
| 20 | Changi Sth Ave 2, Changi Sth Ave 4, Changi Business Pk Ctrl 2, Changi Business Pk Ave 3 | Since introduction (9 Jun 2013) |
| 23 | Bendemeer Rd, Jln Besar, Rochor Canal Rd, S’goon Rd | Since 6 Jan 1991 |
| 24 | Changi Airport Ter 1 | Since 25 Jun 1983 |
| Changi Airport Ter 2 | Since 13 Oct 1990 | |
| Changi Airport Ter 3 | Since 11 Nov 2007 | |
| Changi Airport Ter 4 | Since 22 Oct 2017 | |
| 27 | Changi Airport Ter 1 | Since 24 Jan 1988 |
| Changi Airport Ter 2 | Since 13 Oct 1990 | |
| Changi Airport Ter 3 | Since 11 Nov 2007 | |
| 34 | Changi Airport Ter 1, Ter 2 | Since introduction (31 Jul 2005) |
| Changi Airport Ter 3 | Since 11 Nov 2007 | |
| Changi Airport Ter 4 | Since 22 Oct 2017 | |
| 36 | Orchard Blvd, Tomlinson Rd, Tanglin Rd, Orchard Rd | Since 6 Sep 1998 |
| 40 | Merpati Rd, Circuit Rd, Pipit Rd, Circuit Rd, Merpati Rd, Mattar Rd | Since 10 Jun 1984 |
| 41 | Jln Jurong Kechil, Jln Anak Bt, Upp Bt Timah Rd | Since introduction (14 Dec 2014) |
| 42 | Lengkong Tiga, Lengkong Empat, Jln Selamat, Taman Kembangan | Since introduction (5 Nov 1989, as Service M2) |
| 43M | Boundary Rd, Upp S’goon Rd, S’goon Ctrl | Since introduction (16 Nov 2014) |
| 47 | Marine Parade Rd, Amber Rd, Mountbatten Rd, East Coast Rd, Still Rd Sth | Since introduction (20 Dec 2015) |
| 49 | Jurong West St 51, Jurong West Ave 1, Jurong West St 42, Jurong West St 41 | Since introduction (14 Dec 2013) |
| 53 | Changi Airport Ter 1, Ter 2 | Since 23 Apr 1995 |
| Changi Airport Ter 3 | Since 11 Nov 2007 | |
| 53M | Boundary Rd, S’goon Ctrl, Upp S’goon Rd | Since introduction (16 Aug 2015) |
| 62 | Geylang Rd, Lor 1 Geylang, Sims Ave | Since 7 Dec 2003 |
| 64 | Stirling Rd, Mei Chin Rd, Mei Ling St, Queensway, Alexandra Rd | Since 2 Dec 1979 |
| 66 | Upp Bt Timah Rd, Jln Anak Bt, Jln Jurong Kechil | Since 12 Dec 2021 |
| 70M | Raffles Blvd, Temasek Blvd, Temasek Ave, Raffles Ave | Since 16 Oct 2000 (as Service 70X) |
| 71 | Bishan Rd, Braddell Rd, Bishan St 11 | Since introduction (9 Dec 2017) |
| 78 | C’wealth Ave West, Clementi Ave 3 | Since introduction (19 Jun 1988) |
| 81 | Upp S’goon Rd, S’goon Ctrl, Boundary Rd | Since 3 Sep 2011 |
| 82 | Upp S’goon Rd, S’goon Ctrl, Boundary Rd | Since 3 Sep 2011 |
| 92 | Mt Sinai Dr, Moonbeam Wk, Ulu Pandan Rd, Pandan Valley, Mt Sinai Rise | Since introduction (11 Sep 1989, as Service M1) |
| 95 | Holland Ave, Holland Rd, Nth Buona Vista Rd, Holland Dr | Since 17 Dec 2006 |
| 96 | Clementi Rd, Kent Ridge Cres | Since introduction (16 Aug 1982) |
| 98M | Yung Ho Rd, Corporation Rd, Jln Ahmad Ibrahim, Yuan Ching Rd, Yung Ho Rd | Since introduction (28 Jan 2008) |
| 101 | Buangkok Lk, Buangkok Cres | Since 25 Aug 2019 |
| 107M | Raffles Blvd, Temasek Ave, Temasek Blvd | Since introduction (23 Mar 1997, as Service 107X) |
| 110 | Changi Airport Ter 3, Ter 1, Ter 2, Ter 4 | Since introduction (22 Oct 2017) |
| 111 | Raffles Blvd, Temasek Blvd, Temasek Ave, Raffles Ave | Since 27 Jul 2003 |
| 112 | Hougang St 92, Hougang Ave 9 | Since introduction (15 Feb 2004) |
| 113 | Hougang St 11, Upp Paya Lebar Rd | Since introduction (15 Feb 2004) |
| 114 | Buangkok Lk, Buangkok Cres | Since introduction (25 Oct 2020) |
| 115 | Hougang Ave 1, Lor Ah Soo, Hougang Ave 3 | Since introduction (30 Oct 2004) |
| 116 | S’goon Ctrl, Upp S’goon Rd, Boundary Rd | Since introduction (18 Nov 2012) |
| 119 | Upp S’goon Rd, Hougang St 21, Tampines Rd | Since introduction (14 Sep 2003) |
| 120 | Telok Blangah St 32, Telok Blangah Dr, Telok Blangah St 31, Telok Blangah Hts | Since introduction (21 Apr 2013) |
| 121 | Telok Blangah Way, Telok Blangah Cres, Telok Blangah Rise, Lower Delta Rd | Since introduction (16 Mar 2014) |
| 122 | Queensway, C’wealth Dr, C’wealth Ave | Since introduction (15 Mar 2015) |
| 123M | Tiong Bahru Rd, Zion Rd, Seng Poh Rd, Tiong Bahru Rd | Since 24 Aug 2014 |
| 125 | Sims Dr, Lor 17 Geylang, Sims Ave, Aljunied Rd | Since 27 Nov 2000 |
| 127 | Tampines Ave 10, Tampines Ind Ave 5, Tampines Rd, Tampines Lk | Since introduction (18 Dec 2016) |
| 134 | Marine Cres, Marine Terr, Marine Parade Rd | Since introduction (20 Mar 2016) |
| 142 | Potong Pasir Ave 1, Potong Pasir Ave 3, Potong Pasir Ave 2 | Since 1989 |
| 143M | West Coast Rd, Pandan Gdns, Jurong Town Hall Rd | Since introduction (18 May 2014) |
| 146 | Upp Aljunied Rd, Bidadari Pk Dr, Upp S’goon Rd | Since introduction (25 Feb 2024) |
| 150 | Marine Cres, Marine Terr, Marine Parade Rd | Since introduction (20 Mar 2016) |
| 162 | Sin Ming Rd, Sin Ming Dr | Since 17 Dec 2023 |
| 171 | Jelebu Rd, Bt Panjang Rd, Upp Bt Timah Rd, Petir Rd | Since 30 Aug 2020 |
| 177 | Upp Bt Timah Rd, Bt Panjang Rd, Jelebu Rd, Petir Rd | Since 17 Dec 2012 |
| 179 | Lien Ying Chow Dr, Nanyang Dr | Since introduction (7 Jan 2001) |
| 181M | Jurong West Ave 3, Jurong West St 23, Jurong West St 24 | Since introduction (21 Mar 2016) |
| 182/182M | Tuas Sth Ave 3, Tuas Sth Ave 9, Tuas Sth Ave 8, Tuas Sth Ave 5, Tuas Sth Ave 4 | Since 26 May 2002 |
| 184 | Clementi Ave 5, Clementi Ave 4, C’wealth Ave West, Clementi Ave 2 | Since introduction (3 Jul 1994) |
| 189 | Clementi Ave 2, AYE, Clementi Rd, Clementi Ave 1, C’wealth Ave West | Since 23 Nov 2014 |
| 195 | Queensway, C’wealth Dr, C’wealth Ave | Since 18 Dec 1988 |
| 199 | Nanyang Cres, Nanyang Dr, Nanyang Ave | Since 7 Jan 2001 |
| 201 | Jln Ahmad Ibrahim, Penjuru Rd, West Coast Rd, Teban Gdns Rd, Jurong Town Hall Rd, West Coast Rd, Pandan Gdns, Jurong Town Hall Rd | Since introduction (23 Nov 2014) |
| 222 | Chai Chee Rd, Chai Chee St, Chai Chee Dr, New Upp Changi Rd | Since introduction (6 Apr 1997) |
| 228 | Bedok Resvr Rd (ring road) | Since introduction (15 Sep 1980) |
| 229 | Bedok Sth Ave 3, Upp East Coast Rd, Bedok Sth Rd | Since introduction (9 Nov 1986, as Service 219) |
| 230 | Toa Payoh East, Kim Keat Ave, Toa Payoh East | Since introduction (24 Sep 2023) |
| 231 | Lor 4 Toa Payoh, Lor 5 Toa Payoh | Since 11 Mar 2012 |
| 232 | Lor 6 Toa Payoh, Toa Payoh East, Lor 8 Toa Payoh, Lor 7 Toa Payoh | Since 19 May 2002 |
| 238 | Lor 8 Toa Payoh, Braddell Rd, Lor 6 Toa Payoh, Lor 8 Toa Payoh | Since introduction (26 Dec 1983) |
| 240 | Yung Ho Rd, Corporation Rd, Jln Ahmad Ibrahim, Yuan Ching Rd, Yung Ho Rd | Since 1 Jul 1990 |
| 240M | Jurong West Ctrl 2, Jurong West Ctrl 3, Jurong West St 64, Boon Lay Way | Since introduction (1 Sep 2016) |
| 241 | Jurong West St 91, Jurong West St 92 | Since introduction (15 Mar 2009) |
| 242 | Jurong West St 72, Jurong West Ave 5, Jurong West St 71, Jurong West Ave 4 | Since 15 Mar 2009 |
| 246 | Boon Lay Pl, Boon Lay Ave, Boon Lay Dr | Since 15 Jan 1995 |
| 248 | Tuas Sth Ave 5, Tuas Sth Ave 14, Tuas Sth Ave 9, Tuas Sth Ave 10 | Since introduction (18 Jun 2017) |
| 251 | Pioneer Rd, Shipyard Rd, Tg Kling Rd | Since 12 Dec 2015 |
| 252 | Joo Koon Circle, Joo Koon Way, Joo Koon Circle, Joo Koon Rd, Joo Koon Circle | Since 15 Jan 1995 |
| 253 | Benoi Rd (ring road) | Since introduction (12 Dec 2015) |
| 254 | Pioneer Rd, Tuas Ave 20, Tuas Ave 11, Tuas Basin Lk, Tuas Rd | Since 18 Jun 2017 |
| 255 | Gul Circle, Gul Cres, Gul Circle, Gul Ave, Gul Way, Gul Circle | Since 15 Jan 1995 |
| 257 | Pioneer Sector Lane, Pioneer Sector 2, Pioneer Sector 1, Pioneer Sector 3 | Since 18 Oct 1992 |
| 258 | Jurong West St 64, Boon Lay Way, Jurong West Ctrl 2, Jurong West Ctrl 3 | Since 18 Jun 2017 |
| 261 | Ang Mo Kio Ave 10, Ang Mo Kio Ind Pk 1 | Since 19 Mar 1979 |
| 262 | Ang Mo Kio Ave 3, Ang Mo Kio Ave 4, Ang Mo Kio St 11, Ang Mo Kio Ave 2, Ang Mo Kio Ave 1 | Since 1985 |
| 265 | Ang Mo Kio Ave 10, Ang Mo Kio St 54 | Since 10 Apr 1983 |
| 268 | Ang Mo Kio Ind Pk 2, Ang Mo Kio Ave 5 | Since 24 Mar 2002 |
| 269 | Ang Mo Kio Ave 5, Ang Mo Kio Ave 6, Ang Mo Kio St 61, Ang Mo Kio Ave 9, Ang Mo Kio Ave 4, Yio Chu Kang Rd, Ang Mo Kio Ave 5 | Since 17 Nov 2002 |
| 272 | Telok Blangah Way, Telok Blangah Rise, Lower Delta Rd, Telok Blangah Way, Telok Blangah Cres | Since 4 Apr 1993 |
| 273 | Telok Blangah Hts, Telok Blangah St 32, Telok Blangah Dr | Since introduction (28 Sep 1980) |
| 282 | Clementi West St 2, West Coast Rd | Since 8 Mar 1988 |
| 285 | West Coast Highway, Pandan Loop, Jln Buroh | Since 4 Sep 2004 |
| 291 | West Loop: Tampines St 83, Tampines Ave 3, Tampines St 81, Tampines Ave 3, Tampines Ave 8, Tampines St 84 | Since 14 Dec 1997 |
| East Loop: Tampines St 32, Tampines St 33 | Since introduction (11 Sep 1994) | |
| 292 | Tampines Ave 2, Tampines St 22 | Since introduction (20 Feb 1983) |
| 293 | West Loop: Tampines Ave 5, Tampines St 71 | Since 14 Dec 1997 |
| East Loop: Tampines Ave 9, Tampines St 42, Tampines Ave 7 | Since 21 Oct 2017 | |
| 298 | Tampines Ave 8, Tampines Ave 5, Tampines Ave 10, Tampines St 85, Tampines St 86, Tampines Ave 1, Tampines Ave 8 | Since introduction (21 Oct 2017) |
| 298X | Tampines Ave 5, Tampines Ave 10, Tampines St 85, Tampines St 86, Tampines Ave 1, Tampines Ave 8 | Since introduction (9 Dec 2024) |
| 300 | Choa Chu Kang Ave 1, Choa Chu Kang Ave 2, Choa Chu Kang Way, Choa Chu Kang Ave 3 | Since 13 Apr 1998 |
| 302 | Choa Chu Kang Nth 7, Choa Chu Kang Cres, Choa Chu Kang Nth 7 | Since 8 Nov 1998 |
| 307 | North Loop: Choa Chu Kang Dr, Choa Chu Kang St 62, Choa Chu Kang Nth 6 | Since introduction (1997) |
| South Loop: Teck Whye Lane | Since 21 Oct 2012 | |
| 315 | S’goon Nth Ave 3, S’goon Nth Ave 4, S’goon Nth Ave 5, Ang Mo Kio Ave 3 | Since 30 Jan 2011 |
| 317 | Chartwell Dr, Burghley Dr, Berwick Dr, Tavistock Ave, Hemsley Ave, Kensington Pk Rd | Since introduction (31 Oct 1977, as Service 217) |
| 324 | Upp S’goon Cres, Upp S’goon View | Since introduction (14 Sep 2014) |
| 325 | Buangkok Green, Yio Chu Kang Rd, Hougang Ave 9, Hougang St 91, Hougang St 93 | Since 21 Nov 1999 |
| 329 | Buangkok Cres, Buangkok Lk | Since introduction (9 Jul 2017) |
| 333 | Jurong East Ave 1, Jurong East St 32 | Since introduction (27 Feb 1983) |
| 334 | Jurong West Ave 1, Jurong West St 42 | Since introduction (16 Sep 1984) |
| 335 | Jurong West St 52, Jurong West Ave 1, Jurong West St 41 | Since 23 Jan 1994 |
| 358 | West Loop: Pasir Ris Dr 3, Pasir Ris Dr 10, Pasir Ris Dr 1, Elias Rd | Since introduction (2 Feb 1997) |
| East Loop: Pasir Ris Dr 6, Pasir Ris Dr 1, Pasir Ris Dr 4, Pasir Ris St 41 | ||
| 359 | West Loop: Pasir Ris Dr 1, Pasir Ris Dr 10, Pasir Ris St 71 | Since introduction (23 Feb 1997) |
| East Loop: Pasir Ris Dr 1, Loyang Ave, Pasir Ris Dr 3, Pasir Ris Dr 2 | Since 12 Jul 2020 | |
| 371 | Rivervale Dr, Rivervale Cres | Since introduction (19 Jan 2014) |
| 372 | Compassvale Dr, Punggol Rd, Sengkang East Way, Compassvale Rd | Since 28 Oct 2007 |
| 374 | Fernvale Lk, Fernvale St, Fernvale Rd, Sengkang West Way | Since introduction (12 Mar 2017) |
| 384 | Northshore Dr, Punggol Way | Since introduction (27 Dec 2020) |
| 386 | Edgedale Plains, Punggol Field, Punggol East, Punggol Ctrl | Since 14 Feb 2015 |
| 401 | Marine Parade Rd, Amber Rd, Mountbatten Rd, Tg Katong Rd, Dunman Rd, Old Airport Rd, Mountbatten Rd, Fort Rd, East Coast Pk Svc Rd | Since 4 Dec 2004 |
| 502 | C’wealth Ave West, Clementi Ave 2, Clementi Rd, Ulu Pandan Rd, Holland Rd, Napier Rd, Tanglin Rd, Orchard Rd, Bras Basah Rd, Raffles Blvd, Temasek Blvd, Temasek Ave, Bayfront Ave, Ctrl Blvd, Shenton Way, Keppel Rd, AYE, Clementi Ave 6 | Since 29 Dec 2013 |
| 518 | PIE, CTE, Moulmein Rd, Newton Rd, Scotts Rd, Orchard Rd, Bras Basah Rd, Raffles Blvd, Temasek Blvd, Temasek Ave, Bayfront Ave, Marina Blvd, Sheares Ave, ECP, KPE | Since 26 Apr 2010 |
| 800 | Yishun Ave 2, Yishun Ave 7, Sembawang Rd, Yishun Ave 3, Yishun St 71, Yishun Ring Rd | Since 1 Jan 1991 |
| 801 | Yishun St 42, Yishun Ave 6, Yishun Ave 1, Yishun St 43 | Since introduction (23 Jan 2022) |
| 803 | Yishun Ring Rd, Yishun St 31, Yishun Ave 6, Yishun Ave 9 | Since introduction (16 Feb 2014) |
| 804 | Yishun Ring Rd, Yishun St 41, Yishun Ave 1, Yishun Ave 6, Yishun Ave 11 | Since 25 Apr 2004 |
| 805 | Yishun Ave 4, Yishun Ave 1, Yishun St 41, Yishun Ring Rd | Since introduction (14 Feb 2016) |
| 806 | Yishun Ave 11, Yishun Ave 6, Yishun St 31, Yishun Ring Rd | Since 5 Dec 2005 |
| 807 | Yishun Ring Rd, Yishun Ave 5, Sembawang Rd, Yishun Ave 3, Yishun St 71 | Since introduction (15 Oct 2017) |
| 811 | North Loop: Yishun Ave 7, Sembawang Rd, Yishun Ave 5, Yishun Ave 2 | Since introduction (7 Jul 1996) |
| South Loop: Yishun St 81, Yishun Ave 1, Yishun Ave 4 | ||
| 812 | East Loop: Yishun Ctrl, Yishun St 61, Yishun Ring Rd, Yishun Ave 4 | Since introduction (3 Nov 1996) |
| West Loop: Yishun Ring Rd, Yishun Ave 2, Yishun Ave 3 | ||
| 825 | Lentor Rd, Lentor Loop | Since 15 Dec 1997 |
| 857 | Raffles Blvd, Temasek Blvd, Temasek Ave, Raffles Ave | Since introduction (14 Jan 2001) |
| 858 | Changi Airport Ter 1, Changi Airport Ter 2 | Since 2 Nov 1997 |
| Changi Airport Ter 3 | Since 11 Nov 2007 | |
| 861 | Yishun Ring Rd, Yishun Ave 3, Yishun Ave 2 | Since introduction (15 Sep 2024) |
| 871 | Upp Bt Timah Rd, Jln Anak Bt, Jln Jurong Kechil | Since introduction (21 Jul 2024) |
| 883 | Yishun Ctrl 1, Yishun Ctrl 2, Yishun Ctrl, Yishun Ave 2 | Since introduction (23 Oct 2016) |
| 883M | Yishun Ave 7, Sembawang Rd, Yishun Ave 5, Yishun Ave 2 | Since introduction (12 Jan 2020) |
| 900 | W’lands Dr 16, W’lands Ave 1, W’lands Dr 17 | Since 17 Dec 2023 |
| 901 | W’lands Dr 16, W’lands Ave 6, W’lands Ave 1 | Since introduction (12 Dec 1999) |
| 901M | W’lands Ave 6, W’lands Ave 7, W’lands Dr 71, W’lands Ring Rd, W’lands Dr 63 | Since introduction (23 Jun 2019) |
| 903 | W’lands Ctr Rd | Since introduction (4 Feb 1996) |
| 903M | Marsiling Lane, Admiralty Rd, Marsiling Dr | Since introduction (13 Jan 2017) |
| 904 | W’lands Cres | Since introduction (18 Aug 2013) |
| 911 | East Loop: W’lands St 81, W’lands Ave 9, W’lands Ave 2, W’lands St 81 | Since 2001 |
| West Loop: W’lands Ctr Rd | Since introduction (14 Jul 1996) | |
| 912 | East Loop: W’lands Ave 6, W’lands Ave 7, W’lands Dr 71, W’lands Ring Rd | Since 1997 |
| West Loop: W’lands Ctr Rd | Since introduction (8 Dec 1996) | |
| 913 | East Loop: W’lands Circle | Since introduction (8 Dec 1996) |
| West Loop: W’lands Ctr Rd, W’lands Ave 3, W’lands St 11, W’lands St 13 | Since 17 Mar 2019 | |
| 913M | W’lands Ave 3, W’lands St 13, W’lands St 11, W’lands Ave 3 | Since introduction (17 Mar 2019) |
| 920 | Bt Panjang Ring Rd, Bt Panjang Rd, Bangkit Rd | Since introduction (26 Mar 2000) |
| 922 | Bt Panjang Ring Rd, Bt Panjang Rd, Bangkit Rd | Since 28 Feb 2010 |
| 925M | Neo Tiew Rd, Neo Tiew Cres | Since 11 Mar 2007 |
| 941 | Bt Batok West Ave 8, Bt Batok West Ave 6, Bt Batok West Ave 9 | Since 8 Jul 2018 |
| 945 | Bt Batok West Ave 7, Bt Batok West Ave 4, Bt Batok St 33, Bt Batok St 32, Bt Batok St 34 | Since 27 Aug 2006 |
| 947 | Bt Batok West Ave 4, Bt Batok West Ave 7, Bt Batok Rd, Bt Batok West Ave 2 | Since 10 Aug 1986 (as Service 367) |
| 964 | W’lands Loop, W’lands Lk, W’lands Ave 9 | Since introduction (24 Nov 1997) |
| 967 | W’lands Ave 1, W’lands Dr 17, Champions Way | Since introduction (12 Jan 2025) |
| 972 | Orchard Rd, Bras Basah Rd, Bencoolen St, Orchard Rd | Since introduction (17 Nov 2013) |
| 972M | Since introduction (30 Aug 2020) | |
| 973 | Hillview Rd, Hillview Ave, Hume Ave, Upp Bt Timah Rd | Since introduction (26 Feb 2017) |
| 974 | Upp Bt Timah Rd, Petir Rd, Jelebu Rd, Bt Panjang Rd | Since 23 Jan 2021 |
| 979 | Choa Chu Kang Nth 7, Choa Chu Kang Cres, Choa Chu Kang Nth 7 | Since introduction (27 Dec 2015) |
| 983 | Upp Bt Timah Rd, Petir Rd, Jelebu Rd, Bt Panjang Rd | Since 27 Dec 2015 |
| 990 | Boon Lay Way, Jurong East Ctrl, Jurong Gateway Rd | Since introduction (15 Nov 2014) |
| 993 | Bt Batok West Ave 8, Bt Batok West Ave 2, Bt Batok Rd, Bt Batok West Ave 6 | Since introduction (24 Sep 2023) |
Former area loop routes
Note: Roads in italics denote express sectors.
| Service | Looping Route | Remarks |
| 3 | Pasir Ris Dr 10, Pasir Ris Dr 1, Pasir Ris St 71 | Since introduction (7 Apr 2002). Converted to bi-directional service after route extension to Punggol from 19 Oct 2003. |
| 13 | Siglap Rd, Siglap Lk, Marine Parade Rd | Since 16 Sep 2001. Reverted to bi-directional service after route extension to Upp East Coast from 9 Dec 2001. |
| 16 | Siglap Rd, Siglap Lk, Marine Parade Rd | Since 16 Sep 2001. Reverted to bi-directional service after route extension to Bedok from 19 Aug 2007. |
| 55 | Siglap Rd, Siglap Lk, Marine Parade Rd | Since 16 Sep 2001. Reverted to bi-directional service after route extension to Upp East Coast from 9 Apr 2017. |
| 76 | Marine Cres, Marine Terr, Marine Parade Rd | Since 30 Jan 2011. Shortened to Eunos from 20 Mar 2016. |
| 79 | Jurong East St 12, Jurong Gateway Rd, Jurong East Ctrl, Jurong Town Hall Rd | Since 6 Dec 2020. Amended to start from Jurong Town Hall Int from 26 May 2024. |
| Mt Sinai Dr, Moonbeam Wk, Ulu Pandan Rd, Pandan Valley, Mt Sinai Rise | Since introduction (30 Aug 2015). Merged with Service 92 and discontinued on 25 Aug 2024. | |
| 97 | Raffles Blvd, Temasek Blvd, Temasek Ave, Raffles Ave | Since 27 Jul 2003. Reverted to bi-directional service from 26 Apr 2010. |
| 99 | Jurong West St 91, Jurong West St 92 | Since 13 Mar 1988. Converted to bi-directional service after route extension to Joo Koon from 21 Nov 2015. |
| 107 | Shenton Way, Keppel Rd, Anson Rd, Robinson Rd | Since introduction (27 Jan 1978). Converted to bi-directional service after route amendment to Shenton Way Ter from 30 Nov 2003. |
| 124 | Telok Blangah Hts, Telok Blangah St 32, Telok Blangah Dr | Since 23 Nov 2003. Reverted to bi-directional service after route extension to HarbourFront from 21 Apr 2013. |
| 133 | Raffles Blvd, Temasek Blvd, Temasek Ave, Raffles Ave | Since 23 Mar 1997. Reverted to bi-directional service after route extension to Shenton Way from 26 Apr 2010. |
| Raffles Ave, Nicoll Highway, Raffles Blvd, Temasek Blvd, Temasek Ave | Since introduction (26 Apr 2010). Discontinued on 26 May 2012. | |
| 135 | Siglap Rd, Siglap Lk, Marine Parade Rd | Since 16 Sep 2001. Reverted to bi-directional service after route amendment to Jln Kembangan from 28 Feb 2021. |
| 136 | Punggol Field, Punggol Pl, Punggol Ctrl, Punggol Rd | Since 17 Feb 2002. Converted to bi-directional service after route amendment to Punggol Temp Int from 30 Nov 2003. |
| Whampoa Rd, Whampoa Dr, Jln Bahagia, Kim Keat Rd | Since introduction (14 Sep 2014). Discontinued on 11 Dec 2022. | |
| 155 | Siglap Rd, Siglap Lk, Marine Parade Rd | Since 16 Sep 2001. Reverted to bi-directional service after route extension to Bedok from 9 Apr 2017. |
| Bt Batok West Ave 8, Bt Batok West Ave 5, Bt Batok Rd, Bt Batok West Ave 6 | Since introduction (26 Jul 2020). Discontinued on 24 Sep 2023. | |
| Raffles Blvd, Temasek Blvd, Temasek Ave, Raffles Ave | Since introduction (25 Feb 2001, as Service 162X). Discontinued on 17 Dec 2023. | |
| Sengkang West Ave, Sengkang West Rd, Fernvale Lane | Since introduction (28 Jan 2008). Discontinued on 10 Feb 2019. | |
| 180 | Upp Bt Timah Rd, Petir Rd, Jelebu Rd, Bt Panjang Rd | Since 16 Dec 2012. Amended to loop at Bt Panjang Int from 25 Feb 2018. |
| 235 | Lor 4 Toa Payoh, Lor 1 Toa Payoh, Lor 2 Toa Payoh, Lor 3 Toa Payoh | Since introduction (26 Dec 1983). Extended to loop at Toa Payoh Lk from 11 Mar 2012. |
| Clementi Ave 3, C’wealth Ave West | Since introduction (29 Jun 2009). Merged with Service 284 and discontinued on 26 Nov 2011. | |
| 301 | Choa Chu Kang Ave 3, Choa Chu Kang Ave 5, Choa Chu Kang Ave 6, Choa Chu Kang Ave 1 | Since introduction (25 Apr 2015). Extended to loop at Keat Hong Cl from 3 Jan 2016. |
| Choa Chu Kang Ave 7, Choa Chu Kang Gr, Keat Hong Lk | Since introduction (15 May 2016). Merged with Service 991 and discontinued on 30 Sep 2018. | |
| Telok Blangah Rd, Kg Bahru Rd, Mt Faber Rd, Mt Faber Loop, Pander Rd, Morse Rd, Telok Blangah Rd | Since introduction (14 Nov 2005). Discontinued on 1 Mar 2013. | |
| 502A | Raffles Blvd, Temasek Blvd, Temasek Ave, Raffles Ave | Since introduction (27 Dec 2005). Shortened to terminate at Marina Stn Rd from 26 Apr 2010. |
| Since introduction (27 Dec 2005). Discontinued on 26 Apr 2010. | ||
| 518A | TPE, PIE, CTE, Moulmein Rd, Newton Rd, Scotts Rd, Orchard Rd, Bras Basah Rd, Raffles Blvd, Temasek Blvd, Temasek Ave, Raffles Blvd, Republic Blvd, ECP, PIE, TPE | Since introduction (27 Dec 2005). Shortened to terminate at Bayfront Ave from 26 Apr 2010. |
| PIE, CTE, Moulmein Rd, Newton Rd, Scotts Rd, Orchard Rd, Bras Basah Rd, Raffles Blvd, Temasek Blvd, Temasek Ave, Raffles Blvd, Republic Blvd, ECP, Bedok Sth Ave 1, Bedok Sth Rd, Bedok Nth Ave 1, Bedok Nth Rd | Since introduction (27 Dec 2005). Discontinued on 26 Apr 2010. | |
| Raffles Blvd, Temasek Blvd, Temasek Ave, Raffles Ave | Since introduction (26 Dec 1999). Discontinued on 30 Aug 2020. | |
| 853# | Siglap Rd, Siglap Lk, Marine Parade Rd | Since 16 Sep 2001. Reverted to bi-directional service after route extension to Upp East Coast from 9 Dec 2001. |
| 859 | Sembawang Dr, Admiralty Dr, Sembawang Cres | Since 9 Jan 2000. Converted to bi-directional service after route extension to Sembawang Int from 20 Nov 2005. |
| 860 | Yishun Ring Rd, Yishun Ave 3, Yishun Ave 2 | Since introduction (21 Oct 2012). Extended to loop at Yio Chu Kang from 15 Oct 2017. |
| 870 | Tengah Lk, Plantation Cres, Tengah Blvd, Tengah Dr, Bt Batok Rd | Since 24 Dec 2023. Converted to bi-directional service after route extension to Tengah Int on 21 Jul 2024. |
| W’lands Dr 14, Champions Way, W’lands Dr 17, W’lands Ave 4 | Since introduction (26 Jun 2006). Merged with Service 900 and discontinued on 17 Dec 2023. | |
| W’lands Ave 1, W’lands St 41 | Since introduction (1 Sep 2016). Discontinued on 13 Jan 2025. | |
| Bt Batok West Ave 8, Bt Batok West Ave 5, Bt Batok Rd, Bt Batok West Ave 6 | Since introduction (27 Aug 2017). Discontinued on 24 Sep 2023. | |
| Choa Chu Kang Dr, Choa Chu Kang Nth 6, Choa Chu Kang Nth 5 | Since introduction (24 Apr 2016). Merged with Service 979 on 22 Jul 2018. | |
| 991 | Bt Batok West Ave 6, Bt Batok West Ave 9, Bt Batok West Ave 5, Bt Batok West Ave 8 | Since introduction (8 Jul 2018). Converted to bi-directional service after route extension to Choa Chu Kang from 30 Sep 2018. |
| 992 | Plantation Cres, Tengah Blvd, Tengah Gdn Ave, Plantation Cres | Since 24 Dec 2023. Converted to bi-directional service after route extension to Tengah Int from 21 Jul 2024. |
| Yishun Ring Rd, Yishun St 61, Yishun Ctrl, Yishun Ave 11, Yishun Ring Rd | Since 21 Sep 2007. Converted to uni-directional service from 30 Apr 2014. | |
| Sembawang Ave, Canberra Rd, Admiralty Dr, Sembawang Dr | Since 1 Jul 2003. Converted to uni-directional service from 30 Apr 2014. | |
| New Bridge Rd, Upp Circular Rd, Sth Bridge Rd, Nth Canal Rd, Sth Canal Rd, Eu Tong Sen St | Since 20 Oct 2000. Converted to uni-directional service from 30 Apr 2014. | |
| Jln Boon Lay, Boon Lay Way, Jurong West St 64, Jurong West St 62, Jurong West St 61, Jurong West St 71, Jurong West St 81, Jurong West St 82, Jurong West St 75, Jurong West St 64, Jurong West Ctrl 1 | Since 20 Oct 2000. Converted to uni-directional service from 30 Apr 2014. | |
| Rivervale Dr, Sengkang East Way, Anchorvale Lk, Anchorvale Dr, Compassvale Dr, Rivervale Lane | Since 1 Jul 2003. Converted to uni-directional service from 30 Apr 2014. | |
| Pasir Ris Dr 1, Elias Rd, Pasir Ris Dr 3, Loyang Ave | Since 20 Oct 2000. Converted to uni-directional service from 30 Apr 2014. | |
| Bt Batok West Ave 2, Bt Batok West Ave 4, Bt Batok West Ave 7, Bt Batok West Ave 5 | Since 1 Jul 2003. Converted to uni-directional service from 30 Apr 2014. |
4. En-route looping points
Some bus routes (including bi-directional routes) make a loop around selected stretches of roads to provide better accessibility to residential blocks, industrial developments and MRT stations. However, these looping points are not considered the official looping points for the loop routes, but are en-route looping points for selected bus services before proceeding towards their official looping points.
Existing En-route looping points
| Service | En-route looping point(s) | Remarks |
| 11 | Stadium Wk/Cres | Original looping point since 29 Sep 2010, until extension of service to loop at Rhu Cross from 8 Jun 2014 |
| 35 | Tanah Merah Ferry Ter | Original looping point since introduction (9 Jul 1995), until extension of service to loop at Alps Ave from 15 Dec 2014 |
| 39 | Jln Kayu | En-route looping point towards Yishun/Tampines Concourse, since 25 Jul 2004 |
| 60 | Bedok Resvr Rd (ring road) | En-route looping point towards Eunos since 17 Nov 2002 / towards Bedok since 7 Nov 2004 |
| 73 | S’goon Gdn Circus | En-route looping point towards Toa Payoh/Ang Mo Kio since introduction (3 Feb 1974) |
| 84G | New Punggol Rd | En-route looping point since 23 Jun 2024 |
| 84W | ||
| 86 | Jln Kayu | En-route looping point towards Ang Mo Kio/Sengkang since introduction (21 Feb 1999, as Service 866) |
| 91 | Ayer Rajah Cres (near Tempco Mfg) | En-route looping point towards former Ayer Rajah Bus Pk since introduction (13 Feb 1995) |
| 102 | Jln Kayu | Original looping point since introduction (20 Sep 2015), until extension of service to Seletar Airport from 14 Oct 2018 |
| 103 | West Camp Rd | Original looping point since 13 Feb 2011, until extension of service to Yishun from 14 Jun 2015 |
| 117 | West Camp Rd | En-route looping point towards Sembawang/Punggol, since 24 Apr 2016 |
| 117M | West Camp Rd | En-route looping point towards Sembawang/Punggol, since 29 Nov 2021 |
| 123 | Bt Purmei Ave | Original looping point since 23 May 1993, until extension of service to HarbourFront from 24 Aug 2014 |
| 123M | Bt Purmei Ave | Original looping point until extension of service to HarbourFront from 24 Aug 2014 |
| 131 | Bt Purmei Ave | En-route looping point towards Bt Merah/St. Michael’s, since 19 Jun 2005 |
| 136 | S’goon Gdn Circus | En-route looping point towards Punggol/Ang Mo Kio since introduction (27 Jul 1978) |
| 168 | Jln Kayu | En-route looping point towards Woodlands/Bedok, since 22 Jul 2001 |
| 173 | Hillview Ave | En-route looping point towards Clementi/Bt Batok, since 16 Jul 2006 |
| 177 | MINDEF CP | En-route looping point towards Bt Panjang/Bt Batok, since 12 Mar 1990 |
| Hillview Ave | En-route looping point towards Bt Panjang/Bt Batok, since 26 Aug 2024 | |
| 248 | Tuas Sth Ave 12 | En-route looping point towards Tuas Sth Ave 14 since introduction (18 Jun 2017) |
| 248M | Tuas Sth Ave 12 | En-route looping point towards Tuas Sth Ave 14 since introduction (26 Sep 2021) |
| 249 | Tg Kling Rd | En-route looping point towards Jln Samulun since introduction (1 Jun 1978) |
| 254 | Tuas Rd | En-route looping point towards Tuas Ave 11 since introduction (27 May 1984) |
| 257 | Gul Rd | En-route looping point towards Pioneer Sector 2 since introduction (1 Jun 1978) |
| Pioneer Sector 1 | En-route looping point towards Pioneer Sector 2, since 23 Feb 1986 | |
| 273 | Telok Blangah Hts | En-route looping point since 30 Sep 2001 |
| 315 | S’goon Gdn Circus | En-route looping point towards S’goon Nth Ave 5/Serangoon Int, since 28 May 1989 |
| 317 | S’goon Gdn Circus | En-route looping point towards Berwick Dr/Serangoon Int, since 13 Mar 1988 (as Service 217) |
| 386 | Edgefield Plains | Original looping point since introduction (17 Aug 2014), until extension of service to loop at Punggol Ctrl from 14 Feb 2015 |
| Edgedale Plains | En-route looping point since 24 Apr 2016 | |
| 400 | Marina Gdns Dr | Original looping point since 19 Jul 2009, until extension of service to loop at Marina Bay Cruise Ctr from 16 Jun 2019 |
| 405 | Lim Chu Kang Rd | En-route looping point towards Boon Lay, since 5 Apr 1997 |
| 856 | W’lands Nth Coast Rd | En-route looping point towards Woodlands/Yishun, since 31 Jan 2020 |
| 858 | Jln Kayu | En-route looping point towards Changi Airport/Woodlands, since 22 Jul 2001 |
| 925 | Kranji Way (Kranji Resvr Pk B) | En-route looping point towards Choa Chu Kang/Woodlands since introduction (6 Apr 1986) |
Former En-route looping points
| Service | En-route looping point(s) | Remarks |
| 124 | Telok Blangah Hts | En-route looping point since 23 Nov 2003. Amended to proceed along Telok Blangah Hts to Telok Blangah St 31 from 21 Apr 2013. |
| 300 | Choa Chu Kang Ave 5 | En-route looping point since 31 Oct 2001. Skipped looping point from 25 Apr 2015 with the introduction of Services 301 and 983. |
| Maritime Sq | En-route looping point since introduction (14 Nov 2005). Discontinued on 1 Mar 2013. |
5. Clockwise/Anti-clockwise loop routes
In some situations, a loop route will be required to connect points A, B and C. An ordinary loop route going through A, B and C in order may face some problems. For example, there may be high passenger demand from B to A, as well as from C to A. This creates overcrowding on the route, as well as unnecessary travel time for passengers at B. Also, although passengers at B will be able to alight at C, passengers at C will not have bus connections to B. This is when clockwise and anticlockwise loop routes are launched, one routed as A→B→C→A and the other routed as A→C→B→A, to cater to the needs of different commuters.
Existing Clockwise/Anti-clockwise loop routes
| Service | Looping Point | Remarks |
| 84G | New Punggol Rd | Since introduction (23 Jun 2024) |
| 84W | ||
| 225G | Bedok Nth St 3 | Since introduction (18 May 1980). Swapped directions on 9 Oct 1982. |
| 225W | ||
| 243G | Jurong West Ave 5 | Since 1999 |
| 243W | ||
| 382G | Sumang Wk | Since introduction (3 Jan 2016) |
| 382W | ||
| 410G | Shunfu Rd | Since introduction (3 May 1992) |
| 410W | ||
| 859A | Admiralty Lk | Since 17 Aug 2014 |
| 859B | Sembawang Cres | Since introduction (17 Aug 2014) |
Former Clockwise/Anti-clockwise loop routes
| Service | Looping Point | Remarks |
| Lor 1 Toa Payoh | Since introduction (26 Dec 1983). Converted to single plate service on 11 Mar 2012. | |
| 231W | ||
| Lor 2 Toa Payoh | Since introduction (26 Dec 1983). Converted to single plate service on 19 May 2002. | |
| 232W | ||
| 300G | Choa Chu Kang Ave 2 | Since 23 Feb 1997. Reverted to single plate service on 13 Apr 1998. |
6. Two-part loop routes
Some loop routes are actually two loop routes combined into one, and the route stops at the original terminus midway through the route. Both the first and second leg serve different areas (A→B→A→C→A). This system allows passengers to travel between the areas served by both legs of the route. This is most commonly seen in the formerly Intra-Town/Townlink branded routes. To differentiate between the two legs of the route, SBS Transit used to implement a red/green plate system for the two legs.
| Service | Looping Points | Remarks |
| 42 | Lengkong Empat & Fidelio St | Since introduction (5 Nov 1989, as Service M2) |
| 92 | Science Pk Dr & Mt Sinai Dr | Since 17 Jan 1994, as Service M1 |
| 291 | Tampines St 81 & St 33 | Since 6 Jul 1996 |
| 293 | Tampines St 71 & Ave 7 | Since 6 Jul 1996 |
| 307 | Choa Chu Kang St 62 & Teck Whye Lane | Since introduction (1997). Briefly converted to single loop service between 26 Dec 1999 and 30 Oct 2001. |
| 358 | Pasir Ris Dr 10 & Dr 4 | Since introduction (2 Feb 1997) |
| 359 | Pasir Ris St 71 & Dr 2 | Since introduction (23 Feb 1997) |
| 811 | Yishun Ave 5 & Ave 1 | Since introduction (7 Jul 1996) |
| 812 | Yishun Ave 4 & Ave 3 | Since introduction (3 Nov 1996) |
| 911 | Woodlands Ave 2 & Ctr Rd | Since introduction (14 Jul 1996) |
| 912 | Woodlands Ave 7 & Ctr Rd | Since introduction (8 Dec 1996) |
| 913 | Woodlands Circle & Ave 3 | Since introduction (8 Dec 1996) |
Buses on dual loop feeder services will reflect the “T” suffix on the service number during the 2nd loop if the bus will terminate at the interchange. Otherwise, the bus will continue on its 2nd trip (i.e. 1st loop again) after finishing the 2nd leg. Drivers usually do 2 trips (i.e. 4 loops) of the service before going for their break.
Buses on Service 92 will reflect the “T” suffix on the service number if the bus will terminate at Ghim Moh Bus Terminal.
7. “Infinite” loop routes
This variant of loop routes allow passengers to remain onboard the bus at the bus terminus. The passengers can wait onboard until the bus departs on its next trip. The distance fare will be accumulated for both stretches of route (return and forward trip) once the passenger taps out, or a passenger pays a cash fare equivalent to the distance he traveled. This form of loop route technically allows passenger to stay onboard for as long as they like, as the fare will only be charged upon alighting (A ↺ B ↺ A)
| Service | Route | Remarks |
| 36 | Changi Airport Ter 2 ↺ Tomlinson Rd | Since 6 Sep 1998 |
| 92 | Ghim Moh Ter ↺ Science Pk Dr/Mt Sinai Dr | Since 26 Nov 2007 |
8. Looping point within restricted areas
Some routes loop within restricted areas where a pass is needed to enter. Such is the case for Changi Airfreight Terminal, where only workers with a valid entry pass can enter the restricted area. For card-paying passengers, their ride will be suspended upon tapping out at the Police Pass Office, and resumed upon boarding the same service as they alighted (at another bus stop near the Police Pass Office after buses exit the restricted areas). For cash paying passengers, they will have to pay again upon boaring if their ticket expires within the restricted area. (A→B→C→B→A)
| Service | Route | Remarks |
| 9 | Bedok Int ↺ Airport Cargo Rd | Since 25 Jun 1983 |
| 19 | Tampines Int ↺ Airport Cargo Rd | Since introduction (23 Jan 1994) |
| 89 | Hougang Ctrl Int ↺ Airport Cargo Rd | Since introduction (5 Dec 1999) |
9. Loop routes operating from bus stops
These routes originate / terminate from various en-route bus stops:
Existing loop routes operating from bus stops
| Service | Route | Remarks |
| 42 | Jln Kembangan ↺ Fidelio St | Since introduction (5 Nov 1989, as Service M2) |
| 53M | Hougang Ave 1 ↺ Serangoon Ctrl | Since introduction (16 Aug 2015) |
| 115 | Hougang St 21 ↺ Hougang Ave 3 | Since introduction (30 Oct 2004) |
| 146 | Bartley Rd ↺ Bidadari Pk Dr | Since introduction (25 Feb 2024) |
| 240M | Lakeside Stn ↺ Jurong West St 64 | Since introduction (1 Sep 2016) |
Former loop routes operating from bus stops
| Service | Route | Remarks |
| 78 | Jurong Gateway Rd ↺ Clementi Ave 3 | Since 6 Dec 2020. Extended to Jurong Town Hall Int on 26 Nov 2023. |
| 114 | Buangkok Stn ↺ Buangkok Cres | Since introduction (25 Oct 2020). Extended to Buangkok Int on 1 Dec 2024. |
| 502 | Pioneer Rd Nth ↺ Temasek Ave | Since 26 Dec 2005. Extended to Soon Lee Bus Pk on 23 Feb 2009. |
| 502A |
10. Loop routes operating like bi-directional routes
Some routes are designated as loop routes but operate like bi-directional routes. They have a terminus at either end and have a short layover at the looping terminus, usually without any driver’s kiosk.
| Service | Route | Remarks |
| 63 | Eunos Int ↺ Jln Rumah Tinggi | Since 2002 |
| 160 | Jurong East Int ↺ JB Sentral Ter | Since 1 Mar 2015 |
| 950 | Woodlands Temp Int ↺ JB Sentral Ter | Since 1 Mar 2015 |
| 975 | Bt Panjang Int ↺ Lim Chu Kang Rd | Since introduction (27 Feb 2005) |
11. Bi-directional routes operating like loop routes
Some routes are designated as bi-directional routes but operate like loop routes. Drivers do not take a layover break at the looping terminus, they simply alight all passengers and proceed to pick up passengers for the return journey.
| Service | Route | Remarks |
| 159 | Sengkang Int ↔ Toa Payoh Int | Unofficially loops at Toa Payoh Int |
| 163 | Sengkang Int ↔ Toa Payoh Int | Unofficially loops at Toa Payoh Int |
| 192 | Boon Lay Int ↔ Tuas Ter | Unofficially loops at Boon Lay Int |
| 193 | Boon Lay Int ↔ Tuas Ter | Unofficially loops at Boon Lay Int |
12. Looping Short Trip Services
While most short trip services operate as uni-directional trips from Point A to B, selected short trip services are operated as loop services in order to cater to passenger demand in both directions of their parent services.
| Service | Route | Remarks |
| 34B | Tampines Ave 10 (IKEA Tampines/Aft TPE) → Changi Airport Ter 2 → Tampines Ave 10 (Tampines Wafer Fab Pk) | Since introduction (25 Mar 2019) |
| 36B | Marine Parade Rd (Lagoon View) → Tomlinson Rd (Aft Cuscaden Rd) → Siglap Rd (Bef Seaside Residences) | Since introduction (2009) |
| 113A | Upp S’goon Rd (Kovan Stn Exit C) → Upp Paya Lebar Rd (Blk 161) → Upp S’goon Rd (Kovan Stn Exit B) | Since introduction (2005) |
| 142A | Toa Payoh Int → Potong Pasir Ave 1 → Upp S’goon Rd (Sant Ritz) | Since introduction (24 Dec 2018) |
| 158A | Aljunied Rd (Aljunied Stn) → Rhu Cross (Opp Costa Rhu Condo) → Aljunied Rd (Opp Aljunied Stn) | Since 1 Aug 2011 |
| 195A | Marina Ctr Ter → C’wealth Ave (C’wealth Stn Exit B/C) → Tiong Bahru Rd (Tiong Bahru Stn) | Since 2005 |
| 222B | New Upp Changi Rd (Bedok Stn Exit A) → Chai Chee Dr → New Upp Changi Rd (Bedok Stn Exit B) | Since introduction (1 Sep 2016) |
| 302A | Choa Chu Kang Dr (Yew Tee Stn) → Choa Chu Kang Cres → Choa Chu Kang Dr (Opp Yew Tee Stn) | Since introduction (15 Sep 2014) |
| 307A | Choa Chu Kang Int → Choa Chu Kang St 62 → Choa Chu Kang Ave 4 (Opp Choa Chu Kang Stn) | Since introduction (1 Sep 2016) |
| 858B | Jln Kayu (Bef Seletar Camp G) → Changi Airport Ter 2 → Jln Kayu (Aft Seletar Camp G) | Since introduction (1 Feb 2016) |
| 912A | Woodlands Int ↺ W’lands Ave 7 | Since introduction (10 Sep 2017) |
| 912B | Woodlands Int ↺ W’lands Ctr Rd | Since introduction (10 Sep 2017) |
| 962B | Sembawang Dr (Opp Sun Plaza) → Admiralty St → Sembawang Dr (Sun Plaza/Sembawang Stn) | Since introduction (26 Aug 2013) |
| 974A | Joo Koon Int → Upp Bt Timah Rd (Bt Panjang Stn Exit A/LRT) → Choa Chu Kang Ave 4 (Lot 1/Choa Chu Kang Stn) | Since 23 Jan 2021 |
Do note that the above classification is not exclusive, and various bus services can fall under multiple classifications.
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60 has an enroute looping point on Bedok reservoir road too no?
Yes service 60 serves Bedok Reservoir Road Christ Church and Blk 608 bus stops towards both Eunos and Bedok Bus Interchanges since 7 November 2004.