Tower Transit Bus Service 173A is a Short-Trip Service variant of Bus Service 173.
The route operates from Bukit Batok Bus Interchange and ends at Bukit Batok East Avenue 4 (Blk 254), operating daily, after the last bus of Service 173 has departed.
→ Blk 254
| Route Overview | ||||||||||||
Route  |
Bukit Batok Bus Interchange → Bukit Batok East Avenue 4 (Blk 254) | |||||||||||
| Passes Through | Bt Batok St 21 | |||||||||||
| Route Length | 2.9 km | |||||||||||
| Travelling Time | 9 mins | |||||||||||
| Operator Information | ||||||||||||
| BCM Route Package | Bulim Bus Package | |||||||||||
| Current Operator | Tower Transit Singapore Pte Ltd (Tower Transit Singapore) |
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| Current Depot | Bulim Bus Depot | |||||||||||
| Current Fleet | Single-deck buses | |||||||||||
| Operating Hours | ||||||||||||
| Departure Times from Bukit Batok |
Daily | |||||||||||
| 23:55 – 01:10 | ||||||||||||
| Fare Information |
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| Fare | Charges regular distance fares |
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Short Trip Service 173A is a trunk service operating from Bukit Batok Bus Interchange and ends at Bukit Batok East Avenue 4 (Blk 254). The Short-Trip Service offers unidirectional trips serving within the Bukit Batok estate during the late night hours (after the last bus of Service 173 has departed), without having to operate full-distance trips of Service 173.
On the eve of public holidays, operating hours will be extended to align with the extended train service hours. Extended last bus timings will be provided by the operator closer to the affected day.
MRT Station Served:
- NS2 Bukit Batok
Departure Timings:
- From Bukit Batok Interchange:
Daily: 23:55, 00:20, 00:45 & 01:00
Gallery:
Operator History:
- 27 Nov 2011 – 28 May 2016: SMRT Buses Ltd
- 29 May 2016 – Present: Tower Transit Singapore
The Bus Service Operating License (BSOL) for this route will be renewed in 2026 under the Bulim Bus Package.
Route History:
- 2011 (27 Nov): Introduced from Bt Batok Int to Bt Batok East Ave 4 (Blk 254), operating after the last bus of Service 173 daily
- 2012: Last bus timing from Bukit Batok extended to 01:00
- 2016 (29 May): Operations transferred to Tower Transit Singapore Pte Ltd from SMRT Buses Ltd
- 2019 (05 Oct): Last bus timing from Bukit Batok amended from 01:00 to 01:10
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