SBS Transit Bus Service 24


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SBS Transit Bus Service 24 is a trunk route running from Ang Mo Kio and looping at Changi Airport, going via AMK Ave 1, Upp Paya Lebar, Paya Lebar, Bedok and Upper Changi. It also duplicates the MRT between Paya Lebar and Tanah Merah.

Route Information
Route Ang Mo Kio Bus Interchange  Changi Airport PTB2 Bus Terminal (Loop) 
Passes Through AMK Ave 1, Upp Paya Lebar, Paya Lebar, Bedok, Upper Changi
Route Length 49.5km
Travelling Time 175mins
Operator Information
Current Operator SBS Transit
Current Depot Ang Mo Kio Bus Depot (AMDEP)
Current Fleet Scania K230UB
Mercedes-Benz O530 Citaro
Departure Times from T1 0530 – 2300 (Daily)
Departure Times from Airport PTB2 0617 – 0013 (Weekdays)
0628 – 0011 (Saturdays)
0627 – 0012 (Sundays/PHs)
Frequency Loop Service
0630-0830: 08 – 10 mins
0831-1659: 07 – 11 mins
1700-1930: 08 – 13 mins
After 1930: 11 – 15 mins

Route History

Service 24 is a lenghty loop trunk route between Ang Mo Kio and Changi Airport, serving Serangoon, Upper Paya Lebar, Paya Lebar, Eunos, Bedok and Upper Changi. Introduced as part of the 1983 Changi Airport Bus Plan, it replaces previously existing bus routes and remains today as a unique connection along much of its route. This service duplicates the East-West Line between Paya Lebar and Tanah Merah, and closely follows Service 22 between Ang Mo Kio and MacPherson.

Due to the loop-route nature of Service 24, as well as irregular demand across the day, this route is very prone to bunching-up. Frequencies during peak hour can exceed 20mins. Sectors of high demand are between Bedok and Upper Changi where the route connects to private housing and new developments along Upper Changi Road East.

The former shortworking trip 24A operates daily from Ang Mo Kio Int to Tanah Merah MRT Station, where the bus would do a u-turn and operate as service 24 back to Ang Mo Kio Int. Departures from Ang Mo Kio Int alternated between the main service 24 and the shortworking service 24A then.

Changi Airport:

Changi Airport Passenger Terminal Buildings (PTBs) 1, 2 and 3 have their bus stops integrated into their basement levels, which also serves as a cargo loading and unloading bay. Security checks for any unattended or suspicious articles are carried out before a bus enters each Airport PTB. Changi Aiport PTB2 has a small office run by SBST staff, and a nearby toilet where drivers can take a short toilet break. Because of height restrictions, double-decker buses are unable to enter Changi Airport basement.

Occasionally when Changi Airport basement is closed, buses will be diverted to to T1/T2/T3 Departure Drive where a temporary bus stop will be set up.

Special Departures:

Upp Paya Lebar Road (Blk 161) Changi Airport  Ang Mo Kio
Daily: 0530hrs, 0537hrs

Upper Changi Road East (Mera Terr P/G) Ang Mo Kio
Weekdays: 0603hrs, 0615hrs

Fare: Charges fares for regular trunk services. See Bus Fares for exact fares.

Fleet: Service 24′s fleet has comprises both Scania K230UB and Mercedes-Benz Citaro buses. Double-decker buses not deployed due to height restrictions within Changi Airport.

Route Information: (List of acronyms)

Loop Service (via PTB2 Basement)
Ang Mo Kio Int

Ang Mo Kio Ave 8

Ang Mo Kio Ave 1

Boundary Rd

Upp Paya Lebar Rd

Paya Lebar Rd

Sims Ave

Sims Ave East

New Upp Changi Rd

Upp Changi Rd East

Airport Blvd

PTB3 Basement

PTB1 Basement

PTB2 Basement

PTB2 Basement

Airport Blvd

Upp Changi Rd East

New Upp Changi Rd

Changi Rd

Geylang Rd

Paya Lebar Rd

Upp Paya Lebar Rd

Boundary Rd

Lor Chuan

Ang Mo Kio Ave 1

Ang Mo Kio Ave 8

Ang Mo Kio Int

Operator History:

1983 – 2001: Singapore Bus Services Ltd

2001 – Present: SBS Transit Ltd

The Bus Service Operating License (BSOL) for this route will be renewed in 2016.



1983 (25 Jun): Introduced as Service 24 to replace services 392 (Bedok Int – Changi Airport), 394 (Somapah Int – Changi Airport) and 727 (Ang Mo Kio – Changi Airport), all withdrawn due to low demand and overlapping routes.
Route plying Ang Mo Kio Int – Changi Airport PTB1

1990: Amended to serve Changi Airport PTB2

2007 (11 Nov): Amended to serve Changi Airport PTB3

2010 (02 Dec): Designated wheelchair-accessible bus route (WAB)

2012 (09 Jan): Converted to loop service

Past Routings:

Refer to this article

1983: No significant route changes since 1983.


External Links:

TransitLink E-Guide



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Back to Bus Articles


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