SBS Transit Bus Service 100A

SBS Transit Bus Service 100A is a Short-Trip Service variant of Bus Service 100.

The route operates from Serangoon Bus Interchange and ends at Aljunied Road (Aljunied Stn), operating on Weekdays morning and evening peak hours.

Route Overview
Route	Serangoon Bus Interchange → Aljunied Road (Aljunied Stn)
Passes Through	Upp Serangoon Rd, Upp Aljunied Rd
Route Length	4.8 km
Travelling Time	22 mins
Operator Information
BCM Route Package	Clementi Bus Package
Current Operator	SBS Transit Ltd
Current Depot	Bukit Batok Bus Depot (BBDEP) Hougang Bus Depot (HGDEP)
Current Fleet	Single-deck buses
Operating Hours
Departure Times from Serangoon	Weekdays, except Public Holidays
	06:29 – 08:59 & 17:41 – 19:37
Fare Information
Fare	Charges regular distance fares

Short Trip Service 100A is a trunk service operating from Serangoon Bus Interchange and ends at Aljunied Road (Aljunied Stn).

As a Short-Trip Service, the route operates on Weekdays, during both the morning and evening hours, and supplements the high demand for Service 100 from Serangoon and Aljunied Road to Aljunied MRT Station.

MRT Stations Served:

• NE12CC13 Serangoon
• NE11 Woodleigh
• EW9 Aljunied

Departure Timings

Weekdays, except Public Holidays

• From Serangoon Int:
  Morning Peak: 06:29, 07:13, 07:53, 08:08 & 08:59
  Evening Peak: 17:41, 18:06, 18:28, 18:44, 19:00, 19:13 & 19:37

Gallery:

Operator History:

• 2000 – 2001: Singapore Bus Services Ltd
• 2001 – Present: SBS Transit Ltd

The Bus Service Operating License (BSOL) for this route will be renewed in 2025 under the Clementi Bus Package.

Route History:

• 2000: Introduced from Serangoon Int to Aljunied Rd (Aljunied Stn) during morning peak hours on weekdays
• 2002: Serves new bus stop after Sunshine Lodge along Upp Serangoon Rd
• 2011 (03 Sep): Amended to Serangoon Integrated Transport Hub
• 2017 (12 Mar): Amended to ply Upp Serangoon Rd and the diverted Upp Aljunied Rd

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