Tower Transit Bus Service 173 is a trunk route running from Bukit Batok Bus Interchange and looping at Clementi Bus Interchange, passing through Bukit Batok Street 21, Hillview, Hume Avenue, Upper Bukit Timah, Lorong Kismis, Toh Tuck and Commonwealth Avenue West.
- Bus Service 173 towards Clementi calls at Bus Stop 43261 Opp Hillview Hts, (B04) Hillview Ave while Bus Service 173 towards Bukit Batok calls at Bus Stop 43267 Hillview Hts, (B03) Hillview Ave
|Route||Bukit Batok Bus Interchange ↺ Clementi Bus Interchange (Loop)|
|Passes Through||Bukit Batok St 21, Hillview, Hume Ave, Upp Bukit Timah, Lor Kismis, Toh Tuck, Clementi|
|Route Length||27.4 km|
|Travelling Time||91 – 122 mins|
|BCM Route Package||Bulim Bus Package|
|Current Operator||Tower Transit Singapore Pte Ltd
(Tower Transit Singapore)
|Current Depot||Bulim Bus Depot (BUDEP)|
|Current Fleet||12-metre Single Deck Buses:
– Mercedes-Benz O530 Citaro
– MAN NL323F
|Departure Times from Bukit Batok
||0530 – 2330 (Weekdays, Saturdays)
0600 – 2330 (Sundays/PHs)
2345 – 0100 (Daily | Service 173A*, terminates at Bukit Batok East Avenue 4 (Blk 254))
|Departure Times from Clementi||0550 – 0013 (Weekdays)
0553 – 0010 (Saturdays)
0600 – 0012 (Sundays & Public Holidays)
|0630-0830: 08 – 12 mins
0831-1659: 09 – 14 mins
1700-1900: 09 – 10 mins
After 1900: 15 mins
|Notes||Service 173A operates from Bukit Batok Interchange to Bukit Batok East Avenue 4 (Blk 254). Buses leaving Bt Batok Int after 2330 hours will operate as 173A.|
Service 173 is a residential trunk route connecting the housing estates of Bukit Batok and Clementi, and the private estates of Hillview, Hume, Upper Bukit Timah, Toh Tuck and Lorong Kismis to Bukit Batok and Clementi Town Centres. Much of its route serves residents of private estates and condominiums along its route, and it is the only SMRT bus service at Clementi Bus Interchange.
As the route covers low-density estates, demand is relatively low during most parts of day, but particularly high during the peak hours. Between Bukit Batok and Clementi, Service 106 offers a faster journey as compared to this route.
Formerly a Singapore Bus Service (SBS) route since the 1970s, the route was transferred to Trans-Island Bus Service (TIBS) in 2000 and has been operated by SMRT until its it was re-allocated to the Bus Contracting Model (Bulim Bus Package) in May 2016. High capacity double-deck buses are not deployed due to insufficient demand and road limitations within the many narrow roads which the route serves.
A Short Trip Service, Service 173A, will operate after the last bus has departed Bukit Batok Interchange to connect residents to the housing estates at late hours. During Eves of Public Holidays, last bus timings of Service 173A will be extended to complement the extension of train operating hours.
Fare: Charges basic distance fares. See Bus Fares.
MRT Stations Served
- Upp Bukit Timah Rd (Beauty World Stn Exit A) → Clementi Int → Bukit Batok Int
Weekdays: From 0530hrs till before 0555hrs
Saturdays: From 0535hrs till before 0550hrs
- Jln Jurong Kechil (Opp Beauty World Stn) → Bukit Batok Int
Weekdays: From 0540hrs till before 0605hrs
- Clementi Int → Bukit Batok Int
Sundays & Public Holidays: From 0600hrs till before 0640hrs
Short Trip Service
- Service 173A: Bukit Batok Interchange → Bukit Batok East Avenue 4 (Blk 254)
Weekdays: 2345hrs – 0100hrs | 15 min frequency
Saturdays, Sundays & Public Holidays: 2348hrs – 0100hrs