SMRT Bus Service 172

SMRT Bus Service 172 is a trunk route linking Choa Chu Kang Interchange and Boon Lay Interchange, passing through Choa Chu Kang Ave 1, Brickland Road, Old Choa Chu Kang Road, Jalan Bahar and Jalan Boon Lay.

Technical Information
Route	Choa Chu Kang Bus Interchange ↔ Boon Lay Bus Interchange
Passes Through	Choa Chu Kang Ave 1, Brickland Road, Old Choa Chu Kang Road, Jln Bahar, Jln Boon Lay
Route Length	14.5 km (D1) | 14.2 km (D2)
Travelling Time	45 mins
Operator Information
BCM Route Package	Choa Chu Kang – Bukit Panjang Bus Package
Current Operator	SMRT Buses Ltd
Current Depot	Kranji Bus Depot (KJDEP) Majority of buses park at: Bulim Bus Depot (BUDEP)
Current Fleet	12-metre Double Deck Bus: – MAN A95 – Volvo B9TL 12-metre Single Deck Bus: – MAN A22 – Mercedes-Benz OC500LE
Departure Times from Choa Chu Kang	0530hrs – 2330hrs (Weekdays & Saturdays) 0600hrs – 2330hrs (Sundays & Public Holidays)
Departure Times from Boon Lay	0530hrs – 2330hrs (Weekdays & Saturdays) 0600hrs – 2330hrs (Sundays & Public Holidays)
Frequency	Direction 1	Direction 2
	0630 – 0830: 06 – 07 mins 0831 – 1659: 05 – 13 mins 1700 – 1900: 06 – 09 mins After 1900: 09 – 12 mins	0630 – 0830: 06 – 07 mins 0831 – 1659: 05 – 13 mins 1700 – 1900: 07 – 09 mins After 1900: 10 – 13 mins

Service 172 is an inter-town route providing bus connections between Choa Chu Kang and Boon Lay towns. The route travels through suburban areas along along Jalan Bahar and Old Choa Chu Kang Road, while also linking residents of Choa Chu Kang Avenue 1 to Choa Chu Kang Int/MRT.

Due to demand from various defence institutions along Jln Bahar, Old Choa Chu Kang and increased inter-town passenger demand between Choa Chu Kang & Boon Lay during peak hours, this service operates a relatively large number of split-shift buses, including the addition of high capacity articulated and double deck buses. Double deck buses made their appearance from 14th July 2015 onwards.

Formerly a Singapore Bus Service (SBS) route since the 1970s, the route was transferred to Trans-Island Bus Service (TIBS) in 1996 and has been operated by SMRT ever since.

Fare: Charges basic distance fares. See Bus Fares.

MRT / LRT Stations Served

• NS4BP1 Choa Chu Kang
• EW27 Boon Lay

Special Departures

• Choa Chu Kang Ave 1 (Bef Choa Chu Kang Mkt) → Choa Chu Kang Int
  Weekdays AM Peak Hours

Gallery

Operator History

• 1971 – 1973: United Bus Company Pte Ltd
• 1973 – 1996: Singapore Bus Services Ltd
• 1996 –  2004: Trans-Island Bus Services Ltd
• 2004 – Present: SMRT Buses Ltd

The Bus Service Operating License (BSOL) for this route will be renewed in 2023 under the Choa Chu Kang – Bukit Panjang Bus Package.

History

• 1971 (11 Apr): Introduced as Service 172, between Lim Chu Kang Rd (End) and Prince Edward Rd Ter
• 1973 (01 Nov): Operated by Singapore Bus Service (SBS)
• 1974 (03 Feb): Amended to skip Choa Chu Kang Rd End under 1974 Bus Rationalisation
• 1974 (08 Dec): Amended to ply Cecil St, skipping Robinson Rd
• 1976 (14 Mar): Calls at a staggered bus stop outside The Cenotaph along Connaught Dr, skipping the bus stop opposite Singapore Cricket Club
• 1979 (28 Oct): Amended to ply Sungei Rd towards Prince Edward Rd Ter with the conversion of Rochor Canal Rd to one-way road
• 1979 (30 Dec): Amended to ply Jln Anak Bt towards Prince Edward Rd Ter with the partial conversion of Upp Bt Timah Rd to one-way road
• 1980: Amended to ply Bt Timah Rd towards Lim Chu Kang Ter, skipping Mackenzie Rd
• 1987 (28 Jun): Amended to Shenton Way Ter
• 1991 (26 May): Shortened to loop at Jln Anak Bt from Lim Chu Kang Ter under TransitLink Network Integration Exercise Phase 5
• 1993 (03 Jan): Amended to Boon Lay Int due to MRT rationalisation
• 1994: Amended to ply Sungei Tengah Rd, Brickland Rd and Choa Chu Kang Ave 3, serving the new town of Choa Chu Kang.
• 1998: Calls at a new pair of bus stops outside and opposite Blk 464 along Choa Chu Kang Ave 3
• 1999: Calls at a new bus stop outside Sunshine Pl along Choa Chu Kang Ave 3
• 1999 (26 Dec): Handed to Trans-Island Bus Services (TIBS) and shortened to Choa Chu Kang Int.
• 2004 (10 May): Operated by SMRT Buses
• 2006 (18 Jun): Amended to Boon Lay Temp Int
• 2009 (01 Jun): Designated wheelchair-accessible bus route (WAB)
• 2009 (27 Dec): Amended to Boon Lay Integrated Transport Hub (ITH)
• 2011 (23 Oct): Skips a pair of bus stops after LP 222 and B27 Old Choa Chu Kang Rd along Old Choa Chu Kang Rd due to road widening works
• 2013 (25 Feb): Calls at a new bus stop outside Blk 293 along Choa Chu Kang Ave 1
• 2015 (14 Jul): Start of Double-decker bus deployments
• 2018 (16 Dec): Calls at relocated Choa Chu Kang Bus Interchange.

Past Routings:

• Refer to this article
• 1999: Amended to present routing. No significant route changes since 1999.

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