Tower Transit City Direct Bus Service 663

Tower Transit City Direct Service 663 is a Weekday Peak Hour City Direct Service between Yishun and the CBD, passing through Yishun Ring Rd, Yishun Central and Bras Basah Rd. It is the thirteenth City Direct route introduced under the Bus Service Enhancement Programme (BSEP). Launched on 28 September 2015, the route took over deleted sectors of Express 850E.

59591 Bet Blks 405/406 Yishun Ave 6
59601 Blk 391 Yishun Ave 6
59801 Blk 382C Yishun Ave 6
59649 Opp Blk 333C Yishun St 31
59399 Opp Blk 367 Yishun Ring Rd
59409 Evangel Family Ch Yishun Ring Rd
59419 Blk 413 Yishun Ring Rd
59459 Opp Huamin Pr Sch Yishun Ave 11
59709 Bef SAFRA Yishun Yishun Ctrl
59349 Opp Khoo Teck Puat Hosp Yishun Ctrl
59059 Blk 608 Yishun Ave 2
59039 Yishun Sports Hall Yishun Ave 2
08057 Dhoby Ghaut Stn NS24NE6CC1 Orchard Rd
08069 Bencoolen Stn Exit B DT21 Bras Basah Rd
04179 Aft Bras Basah Stn Exit A CC2 Bras Basah Rd
02049 Raffles Hotel Bras Basah Rd
02119 Opp War Memorial Pk CC3 Nicoll Highway
03019 OUE Bayfront EW14NS26 Collyer Quay
03059 One Raffles Quay Raffles Quay
03129 UIC Bldg TE19 Shenton Way
03218 Opp MAS Bldg EW15 Shenton Way
03241 Mapletree Anson Anson Rd
03111 Aft Capital Twr Robinson Rd
03071 80 Robinson Rd Robinson Rd
03031 Raffles Pl Stn Exit F EW14NS26 Robinson Rd
03011 Fullerton Sq EW14NS26 Fullerton Rd
02111 Esplanade Bridge Esplanade Dr
04111 Capitol Bldg EW13NS25 Stamford Rd
04121 SMU CC2 Stamford Rd
08041 YMCA Orchard Rd
08031 Dhoby Ghaut Stn Exit B NS24NE6CC1 Penang Rd
59031 Opp Yishun Sports Hall Yishun Ave 2
59051 Blk 790 Yishun Ave 2
59341 Khoo Teck Puat Hosp Yishun Ctrl
59701 Opp SAFRA Yishun Yishun Ctrl
59651 Blk 348B Yishun Ave 11
59451 Bet Blks 349/350 Yishun Ave 11
59411 Blk 356 Yishun Ring Rd
59401 Blk 358 Yishun Ring Rd
59391 Blk 342B Yishun Ring Rd
59641 Bet Blks 333C/333D Yishun St 31
59809 Opp Blk 382C Yishun Ave 6
59609 Opp Blk 391 Yishun Ave 6
59599 Opp Blk 406 Yishun Ave 6
Route Overview
Route WAB_logo_20px [AM]: Yishun Avenue 6 (Bet Blks 405/406) → Shenton Way (Opp MAS Bldg)
[PM]: Anson Road (Mapletree Anson) → Yishun Avenue 6 (Opp Blk 406)
Passes Through Yishun Ring Rd, Yishun Ctrl, Bras Basah Rd
Route Length Towards Shenton Way: 26.0 km Towards Yishun Ave 6: 26.3 km
Travelling Time 75 mins
Operator Information
BCM Route Package Sembawang–Yishun Bus Package
Current Operator Tower Transit Singapore Pte Ltd
(Tower Transit Singapore)
Current Depot Mandai Bus Depot
Current Fleet Double Deck Bus
– Alexander Dennis Enviro500
– MAN A95

Operating Hours
Departure Times from Yishun Ave 6
Weekdays, except Public Holidays
07:20 – 07:50
Departure Times from Anson Rd
Weekdays, except Public Holidays
18:15 – 18:30
Operating Frequency
From Yishun Ave 6
10 mins
From Anson Rd
15 mins
Fare Information
Fare Charges express distance fares

City Direct Service 663 provides residents of Yishun with greater connectivity to the CBD. The service provides a travel alternative for commuters who relied on the rail network and feeder buses to and from work. The route incorporates an express sector between Yishun Ave 2 and Orchard Rd via SLE & CTE.

This is the thirteenth City Direct service to be introduced under the Bus Service Enhancement Programme (BSEP), which provides more options for commuters using stretches of the existing rail lines that experience persistently high ridership, while the ongoing rail enhancement measures are being implemented.

With the launch of this service, Express Service 850E was amended to start at Yishun St 41, serving Yishun Ave 1 & 11. Lost sectors for Service 850E was replaced with City Direct Service 663.

MRT Stations Served
Departure Timings

Weekdays (except Public Holidays)

  • Morning Peak from Yishun Avenue 6 (Bet Blks 405/406):
    07:20, 07:30, 07:40 & 07:50
  • Evening Peak from Anson Road (Mapletree Anson):
    18:15 & 18:30

Gallery (F1 Diversion):
Poster Gallery

Operator History:
  • 28 Sep 2015 – 27 Sep 2017: Bus Hub Service Pte Ltd
  • 28 Sep 2017 – Present: Tower Transit Singapore Pte Ltd

The Bus Service Operating License (BSOL) for this route will be renewed in 2026 under the Sembawang–Yishun Bus Package.

  • 2015 (28 Sep): Introduced between Yishun Ave 6 (Bet Blks 405/406) and Shenton Way (Opp MAS Bldg) during morning peak hours and between Anson Rd (Mapletree Anson) and Yishun Ave 6 (Opp Blk 406) during evening peak hours as a peak hour one-directional service on weekdays under the BSEP. Operated under Contract PT221B
  • 2017 (28 Sep): Operations transferred to Tower Transit Singapore Pte Ltd under the Bulim Bus Package; Double deck buses deployed; Designated wheelchair-accessible bus service (WAB)
  • 2020 (08 Apr – 01 Jun): Temporarily suspended due to Singapore COVID-19 Circuit Breaker Measures
  • 2021 (26 Apr): Serves new bus stop outside Blk 382C along Yishun Ave 6
  • 2021 (05 Sep): Transfer of operations from Bulim Bus Package to Sembawang–Yishun Bus Package
  • 2022 (25 Sep): Serves a new bus stop Opp Blk 382C along Yishun Avenue 6
  • 2023 (28 Aug): Addition of 4th morning peak trip from Yishun Avenue 6

Past Routings

Changes in Departure Times:
Effective Date Morning Peak Timings Evening Peak Timings
28 Sep 2015 07:20, 07:30, 07:40 & 07:50 18:15 & 18:30
28 Sep 2017 07:20, 07:35 & 07:50 18:15 & 18:30
28 Aug 2023 07:20, 07:30, 07:40 & 07:50 18:15 & 18:30

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11 thoughts on “Tower Transit City Direct Bus Service 663

  • 1 September 2022 at 12:54 PM

    E500 are now commonly seen (at least during direction two evening peek)

  • 10 August 2020 at 3:36 PM

    Starting September 663 & 665 will park @ Mandai Depot.Dont ask me why.

  • 15 January 2020 at 1:32 PM

    Should have awarded to SMRT.

  • 3 August 2018 at 12:51 AM

    Can bus 663 extend to Canberra walk blk 108 (new bto ) as morning ppl like us had to squee shutter bus 883 to yishun mrt or sembawang mrt to city area. This is very frustrating . Or open other new route to this area ?

  • 19 September 2017 at 2:55 PM

    This arrangement is too risky for Tower Transit. As we all know, the depot is at Bulim, whereas the route is at Yishun. Adhering to schedule may be a problem. Nonetheless, maybe the plan is for Tower Transit to prove itself with this service; if Tower Transit can manage this service well, future packages may be in favour of Tower Transit. ?


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