SMRT City Direct Bus Service 684

City Direct Bus Service 684, operated by SMRT Buses, is a weekday peak-hour City Direct service connecting Keat Hong, Brickland and Bukit Batok West to the Central Business District (CBD). It is introduced under the Bus Connectivity Enhancement Programme (BCEP).

Route Overview
Route	[AM]: Keat Hong Link (Opp Blk 816A) → Marina Boulevard (Marina Bay Financial Ctr) [PM]: Central Boulevard (Marina Bay Stn) → Keat Hong Link (Blk 816B)
Passes Through	Keat Hong Close, Brickland Rd, Bukit Batok Rd, Bukit Batok West Ave 8, Robinson Rd / Shenton Way
Route Length	Towards Marina Blvd: 23.5 km						Towards Keat Hong Link: 23.5 km
Travelling Time	54 – 55 mins
Operator Information
BCM Route Package	Choa Chu Kang–Bukit Panjang Bus Package
Current Operator	SMRT Buses Ltd
Current Depot	Gali Batu Bus Depot
Current Fleet	Single-deck buses
Operating Hours
Departure Times from Keat Hong Link	Weekdays, except Public Holidays
	07:30 – 07:45
Departure Times from Central Blvd	Weekdays, except Public Holidays
	18:10 – 18:25
Operating Frequency
From Keat Hong Link	15 mins
From Central Blvd	15 mins
Fare Information
Fare	Charges express distance fares

Service 684 offers residents of Brickland and Bukit Batok West improved connectivity to the Central Business District via the AYE, providing a direct travel alternative to commuters who typically rely on the rail network and feeder buses.

Early Plans

Plans for this service were first mentioned by Acting Transport Minister Mr Jeffrey Siow on 8 June 2025, as a City Direct service from Brickland, to be launched by the end of 2026.

In an update on the BCEP released by the Land Transport Authority in February 2026, the service number was confirmed as 684, and was scheduled to be introduced ‘in the coming months’. The update included Bukit Batok West as a catchment area for the service. The route was officially announced on 7 May 2026.

MRT Stations Served

• CC32 Prince Edward Road
• EW15 Tanjong Pagar
• NS27CC33TE20 Marina Bay
• DT17 Downtown
• TE19 Shenton Way

Departure Timings:

Weekdays, except Public Holidays

• Morning Peak from Keat Hong Link (Opp Blk 816A):
  07:30 & 07:45
• Evening Peak from Central Boulevard (Marina Bay Stn):
  18:10 & 18:25

Gallery

City Direct 684 - SMRT Buses MAN A22 (SMB1474U)

Poster Gallery:

Poster for New City Direct Bus Service 684

Operator History:

• 15 Jun 2026 – Present: SMRT Buses Ltd

Route History:

• 2026 (15 Jun): Introduced from Keat Hong Link (Opp Blk 816A) to Marina Blvd (Marina Bay Financial Ctr) during morning peak hours and from Ctrl Blvd (Marina Bay Stn) to Keat Hong Link (Blk 816B) during evening peak hours, as a City Direct bus service under the LTA’s Bus Connectivity Enhancement Programme (BCEP).

Past Routings

References:

• 2 new bus services in Tengah and Brickland by year-end, 6 more in 2026: Acting Transport Minister Jeffrey Siow – cna
• More Improvements Under the Bus Connectivity Enhancement Programme in 2026 – Land Transport Authority

Back to Bus Services
Back to City Direct Services