Bus Service 172

!	TRAVEL ADVISORY					!
	From 14 November 2024 to 31 October 2025, train services on the Bukit Panjang LRT will end an hour earlier at 10.30pm every Thursday to Sunday (except Public Holidays). This is to facilitate the upgrading of the BPLRT signalling system, as well as the testing of the new and retrofitted Light Rail Vehicles (LRVs) on the BPLRT network. Please refer here for more information. From 15 June 2025 to 30 July 2025, Train services on the Circle Line will end earlier at 11pm on Sundays, Mondays to Wednesday. This is to facilitate the integration for the CCL6. There is no bridging bus service provided. Please refer here for more information. From Sunday, 29 June 2025, with the opening of Punggol Coast Integrated Transport Hub (ITH), bus services 34, 117 & 117M will be extended to commence operations from the interchange. Please refer here for more information. From Saturday, 18 October 2025, with the realignment of Lim Chu Kang Road, bus service 405 will be amended to skip Lim Chu Kang Road. Please refer here for more information.

Service 172
Route Information
Route	Choa Chu Kang Interchange ↔ Boon Lay Interchange
Route Length	14.5 km (towards Boon Lay) 14.2 km (towards Choa Chu Kang)
Travelling Time	50 mins
Operator	(Choa Chu Kang – Bukit Panjang Bus Package)

SMRT Buses Service 172 is an inter-town route linking the residential estates of Choa Chu Kang and Jurong West via Old Choa Chu Kang Rd.

Though serving the same purpose as bus service 975 in serving both Old Choa Chu Kang Rd and Choa Chu Kang town centre, this service plies a different sector via Keat Hong neighbourhood and its surrounding amenities, making it easier for residents to access nearby areas from their doorsteps.

Given the scarce public transport connections along Old Choa Chu Kang Rd, Service 172 is the only full day service that provides a direct connection to the town centre of Jurong West. As a result, it handles a unique yet significantly high demand on a daily basis. The main bulk of this huge demand comes from civil servants from base camps on weekdays and foreign workers from dormitories on weekends.

Service Information

Bus Duty & Fleet

Service 172

Depot	Fleet Size	Fleet
Kranji Depot (KJDEP) Buses park at Soon Lee Depot (SLDEP)	21	12 Single Deckers	9 Double Deckers
		SMB315C SMB1323Y SMB1508G SMB1594G SMB1622J MAN NL323F SMB2E SMB5Y SMB6U SMB17M SMB19H SMB105S Mercedes-Benz OC500LE	SMB3610E Alexander Dennis Enviro500 SG5800M SG5801K SG5803E SG5806Y SG5817R SG5833T SG6014J MAN ND323F SG5531P SG5534G Volvo B9TL

Notes

1 missing SD & 1 extra DD. SMB315C will operate on Service 983 on Sundays & Public Holidays. Any 3 DDs will operate on Service 172 on Saturdays. Majority DD fleet on Weekdays AM & PM Off-Peak, Sundays and Public Holidays. Service 172, Service 61, Service 983 & Service 991 DDs are interchangeable. Weekdays: 10 AM - 9 PM / 11 S1 (21 buses) Saturdays: 13 AM - 10 PM / 1 TQ (14 buses) Sundays: 10 AM - 10 PM (10 buses)

Route Information

Period	AM Peak (First Bus - 08:30)	AM Off Peak (08:31 - 16:59)	PM Peak (17:00 - 19:00)	PM Off Peak (19:01 - Last Bus)
towards Boon Lay	05 - 09 minutes	07 - 13 minutes	06 - 09 minutes	08 - 14 minutes
towards Choa Chu Kang	05 - 09 minutes	05 - 13 minutes	07 - 10 minutes	10 - 13 miuntes

Special Departures

44091 Choa Chu Kang Mkt Choa Chu Kang Ave 1 → 44009 Choa Chu Kang Int Choa Chu Kang Loop Departure Time
Weekdays	Morning Peak Hours

Direction 1 (Choa Chu Kang → Boon Lay)

[Show/Hide Full Route Details]

Bus Stops	Point of Interest	Weekdays		Saturdays		Suns / PHs
		First bus	Last bus	First bus	Last bus	First bus	Last bus
44009 Choa Chu Kang Int(Berth B1) Choa Chu Kang Loop	NS4 BP1 Choa Chu Kang Lot One	05:30	23:30	05:30	23:30	06:00	23:30
44539 Lot 1/Choa Chu Kang Stn Choa Chu Kang Ave 4	NS4 BP1 Choa Chu Kang Lot One	05:32	23:32	05:32	23:32	06:02	23:32
44399 Opp Blk 210 Choa Chu Kang Dr		05:35	23:34	05:35	23:35	06:05	23:35
44111 Opp Blk 203 Choa Chu Kang Ave 1		05:37	23:36	05:37	23:37	06:07	23:37
44109 Opp Hong San Terr Choa Chu Kang Ave 1		05:39	23:37	05:38	23:38	06:08	23:38
44099 Opp Choa Chu Kang Mkt Choa Chu Kang Ave 1		05:40	23:39	05:40	23:40	06:10	23:40
44089 Opp Blk 296A Choa Chu Kang Ave 1		05:42	23:40	05:41	23:41	06:11	23:41
44689 Sunshine Pl Choa Chu Kang Ave 3	Sunshine Place	05:44	23:42	05:43	23:43	06:13	23:43
44079 Opp Blk 464 Choa Chu Kang Ave 3		05:44	23:42	05:43	23:43	06:13	23:43
30089 Aft Hai Inn See Tp Brickland Rd		05:45	23:43	05:44	23:44	06:14	23:44
30099 Opp Chengtai Nursery Sg Tengah Rd		05:46	23:44	05:45	23:45	06:15	23:45
30059 Opp Track 14 Old Choa Chu Kang Rd		05:48	23:46	05:46	23:46	06:17	23:46
30049 Home Team Acad Old Choa Chu Kang Rd	Home Team Academy	05:49	23:47	05:47	23:47	06:18	23:47
30039 Army Logistics Base Old Choa Chu Kang Rd		05:50	23:48	05:48	23:48	06:19	23:48
30029 Keat Hong Camp Old Choa Chu Kang Rd		05:51	23:49	05:49	23:49	06:20	23:49
30019 Opp Tengah Air Base Old Choa Chu Kang Rd		05:52	23:49	05:50	23:50	06:20	23:50
31199 B25 Old Choa Chu Kang Rd Old Choa Chu Kang Rd		05:53	23:50	05:51	23:51	06:21	23:51
31179 Aft Jln Berseri Old Choa Chu Kang Rd		05:55	23:52	05:53	23:53	06:23	23:53
31169 Teen Challenge Old Choa Chu Kang Rd		05:55	23:53	05:53	23:53	06:24	23:53
31159 Bef Lim Chu Kang Rd Old Choa Chu Kang Rd		05:57	23:54	05:55	23:55	06:25	23:55
31059 Aft Cemy Chapel Jln Bahar		05:57	23:54	05:55	23:55	06:25	23:55
31049 Aft Chr Cemy Path 9 Jln Bahar		05:58	23:55	05:56	23:56	06:26	23:56
31039 Opp Civil Defence Acad Jln Bahar	Civil Service Academy National Service Training Institute	05:59	23:56	05:57	23:57	06:27	23:57
31019 Bef Nanyang Ave Jln Bahar		06:01	23:57	05:59	23:59	06:29	23:59
27129 Opp Nanyang Ave Jln Bahar		06:02	23:58	06:00	24:00	06:30	24:00
27109 Westwood Sec Sch Jln Bahar		06:03	24:00	06:01	00:01	06:31	00:01
27099 Blk 271 CP Jln Bahar		06:05	00:01	06:03	00:03	06:33	00:03
21379 Blk 263 Jln Boon Lay		06:08	00:03	06:05	00:05	06:36	00:05
21369 Opp Blk 695 Jln Boon Lay		06:10	00:05	06:07	00:06	06:37	00:06
22491 Blk 662D Jurong West St 64	EW27 Boon Lay Jurong Point	06:16	00:10	06:11	00:10	06:42	00:10
22009 Boon Lay Int(Alighting) Jurong West Ctrl 3	EW27 Boon Lay Jurong Point	06:20	00:13	06:14	00:13	06:46	00:13

Direction 2 (Boon Lay → Choa Chu Kang)

[Show/Hide Full Route Details]

Bus Stops	Point of Interest	Weekdays		Saturdays		Suns / PHs
		First bus	Last bus	First bus	Last bus	First bus	Last bus
22009 Boon Lay Int(Berth B6) Jurong West Ctrl 3	EW27 Boon Lay Jurong Point	05:30	23:30	05:30	23:30	06:00	23:30
22499 Opp Blk 662C Jurong West St 64	EW27 Boon Lay Jurong Point	05:32	23:32	05:32	23:32	06:02	23:32
21361 Blk 695 Jln Boon Lay		05:36	23:36	05:36	23:36	06:06	23:36
21371 Blk 680C Jln Boon Lay		05:37	23:37	05:37	23:37	06:07	23:37
27091 Opp Blk 271 CP Jln Bahar		05:38	23:38	05:38	23:38	06:08	23:38
27101 Opp Westwood Sec Sch Jln Bahar		05:39	23:40	05:39	23:39	06:09	23:39
27121 Bef Nanyang Ave Jln Bahar		05:41	23:42	05:41	23:41	06:11	23:41
31011 Aft Nanyang Ave Jln Bahar		05:42	23:43	05:42	23:41	06:12	23:41
31031 Civil Defence Acad Jln Bahar	Civil Service Academy National Service Training Institute	05:45	23:46	05:45	23:44	06:15	23:44
31041 Bef Muslim Cemy Path 7 Jln Bahar		05:45	23:46	05:45	23:44	06:15	23:44
31051 Pusara Aman Mque Jln Bahar		05:46	23:47	05:46	23:45	06:16	23:45
31151 Aft Lim Chu Kang Rd Old Choa Chu Kang Rd		05:47	23:47	05:46	23:45	06:16	23:45
31161 Opp Teen Challenge Old Choa Chu Kang Rd		05:49	23:49	05:48	23:47	06:18	23:47
31171 Opp Jln Berseri Old Choa Chu Kang Rd		05:49	23:49	05:48	23:47	06:18	23:47
31191 B26 Old Choa Chu Kang Rd Old Choa Chu Kang Rd		05:51	23:51	05:50	23:48	06:20	23:48
30011 Tengah Air Base Old Choa Chu Kang Rd		05:52	23:52	05:51	23:49	06:21	23:49
30021 Opp Keat Hong Camp Old Choa Chu Kang Rd		05:53	23:53	05:52	23:50	06:22	23:50
30031 Opp Army Logistics Base Old Choa Chu Kang Rd		05:54	23:54	05:53	23:51	06:23	23:51
30041 Opp Home Team Acad Old Choa Chu Kang Rd	Home Team Academy	05:54	23:54	05:53	23:51	06:23	23:51
30051 Aft Track 14 Old Choa Chu Kang Rd		05:55	23:55	05:54	23:52	06:24	23:52
30091 Chengtai Nursery Sg Tengah Rd		05:57	23:57	05:56	23:54	06:26	23:54
30081 Opp Hai Inn See Tp Brickland Rd		05:58	23:59	05:58	23:55	06:28	23:56
44071 Blk 464 Choa Chu Kang Ave 3		05:59	24:00	05:59	23:56	06:29	23:57
45451 Blk 293 Choa Chu Kang Ave 1	Sunshine Place	06:00	00:01	06:00	23:57	06:30	23:58
44081 Blk 296A Choa Chu Kang Ave 1		06:01	00:02	06:01	23:58	06:31	23:59
44091 Choa Chu Kang Mkt Choa Chu Kang Ave 1		06:03	00:04	06:03	24:00	06:33	00:01
44101 Aft Hong San Terr Choa Chu Kang Ave 1		06:04	00:05	06:04	00:01	06:34	00:02
44119 Blk 204 Choa Chu Kang Ave 1		06:07	00:08	06:07	00:04	06:37	00:05
44391 Aft Blk 202 Choa Chu Kang Dr		06:09	00:10	06:08	00:05	06:38	00:06
44009 Choa Chu Kang Int(Alighting) Choa Chu Kang Loop	NS4 BP1 Choa Chu Kang Lot One	06:14	00:15	06:13	00:10	06:43	00:11

Historical Information

Operator	Route	Year	Date	Service changes
United Bus Company	Lim Chu Kang ↔ Prince Edward	1971	11 April	Introduced between Lim Chu Kang Ter and Prince Edward Ter under 1971 Bus Reorganisation.
		1973	1 July	Operations transferred to Singapore Bus Services.
		1974	3 February	Amended to skip Choa Chu Kang Rd End under 1974 Bus Rationalisation.
			8 December	Amended to ply Cecil St, skipping Robinson Rd.
		1976	14 March	Serves new staggered bus stop outside The Cenotaph along Connaught Dr, skipping the bus stop opposite Singapore Cricket Club.
		1979	11 February	Amended to ply the extended Shenton Way, Palmer Rd and Anson Rd, skipping Parsi Rd.
			28 October	Amended to ply Sungei Rd towards Prince Edward Ter with the conversion of Rochor Canal Rd to one-way traffic.
			30 December	Amended to ply Jln Anak Bt towards Prince Edward Ter with the partial conversion of Upp Bt Timah Rd to one-way traffic.
		1980	TBC	Amended to ply Bt Timah Rd towards Lim Chu Kang Ter, skipping Mackenzie Rd.
	Lim Chu Kang ↔ Shenton Way	1987	28 June	Amended to Shenton Way Ter.
	Lim Chu Kang ↺ Jln Anak Bt	1991	26 May	Shortened to loop at Jln Anak Bt from Lim Chu Kang Ter under TransitLink Network Integration Exercise Phase 5.
	Boon Lay ↺ Jln Anak Bt	1993	3 January	Amended to Boon Lay Int under TransitLink Network Integration Exercise Phase 11.
		1994	TBC	Amended to ply Sg Tengah Rd with the partial closure of Choa Chu Kang Rd.
		1998	TBC	Serves new pair of bus stops outside and opposite Blk 464 along Choa Chu Kang Ave 3.
(Current) Known as prior to 10 May 2004	Boon Lay ↔ Choa Chu Kang	1999	26 December	Operations transferred to Trans Island Bus Services.
				Shortened to Choa Chu Kang Int under Bukit Panjang LRT Rationalisation.
		2001	TBC	Serves new bus stop outside Sunshine Pl along Choa Chu Kang Ave 3.
		2006	18 June	Amended to Boon Lay Temp Int.
		2009	1 June	Designated wheelchair-accessible bus service (WAB).
			27 December	Amended to Boon Lay Integrated Transport Hub.
		2011	23 October	Skips a pair of removed bus stops after LP 222 and B27 Old Choa Chu Kang Rd along Old Choa Chu Kang Rd.
		2013	24 February	Serves new bus stop outside Blk 293 along Choa Chu Kang Ave 1.
		2018	16 December	Amended to new Choa Chu Kang Int.
		2025	8 June	Skips a pair of removed bus stops opposite and outside Jalan Bahar Power Station and serve relocated bus stop before Nanyang Ave along Jalan Bahar.

External Links

• SMRT Journeys
• SimplyGo eGuide
• Bus Service Route Map