Gearing up for 2021: Things to expect ahead of the Sembawang–Yishun Bus Package transition

Published: 10 October 2020. Last update: 23 Sep 2021.

Having secured the Sembawang–Yishun Bus Package along with a further extension of the Bulim Bus Package in a combined bid, the months leading up to September 2021 will be interesting times for Tower Transit as it gears up to take over SMRT’s bus operations in Woodlands, Sembawang and Yishun.

This article will address some things to expect ahead of the handover, and potential developments over the months leading up to both transition dates.

Tower Transit in 2021: At a glance

Contract Title PT217: Bus Contracting – Bulim and Sembawang-Yishun Bus Packages
Awarded to: Tower Transit Singapore
Bus Package Bulim Bus Package (Contract PT217A) SembawangYishun Bus Package (Contract PT217B)
Bus Depot Bulim Bus Depot Mandai Bus Depot
Bus Interchanges / Terminals Jurong East Bus Interchange
Bukit Batok Bus Interchange
Jurong Town Hall Bus Interchange (Future)
Sembawang Bus Interchange
Yishun Bus Interchange
Lorong 1 Geylang Bus Terminal
Bus Services 41, 49, 66, 77, 78, 79, 96, 97, 97e, 98/98M, 106, 143/143M, 173, 177, 183, 189, 282, 284, 285, 333, 334, 335, 651, 653, 657, 941, 944, 945, 947 & 990
(663 from May – September 2021)
167, 169, 171, 656, 663, 670, 825, 853/853M, 854, 854e, 855, 856, 857, 858, 859/859A/859B, 882, 883/883M, 963, 963e, 963R, 965, 966, 969, 980, 981, N1 & N2
Projected Fleet size 324 buses 409 buses
Bus Fleet Alexander Dennis Enviro500
• MAN A22 (Euro V)
MAN A95 (Euro 6) – 3-Door
Mercedes-Benz Citaro
Volvo B9TL (Wright)
• Yutong E12
• Yutong E12DD
Alexander Dennis Enviro500
Mercedes-Benz OC500LE
Volvo B5LH
Commencement Date 29 May 2021 5 September 2021

Note: The actual commencement date for Bulim Bus Package was changed to 29 May 2021 with the takeover of Bus Service 944 by Tower Transit on that day. The press release by SeaLink Travel Group Limited, which wholly owns Tower Transit Singapore Pte Ltd, stated it was on 30 May 2021 back in September 2020.

Takeover of new Mandai Bus Depot

Tower Transit will be the first operator to set up shop in the new Mandai Bus Depot, which was completed in 2019. The new depot, with a capacity of at least 550 buses, was handed over to Tower Transit for outfitting in October 2020.

As part of the awarded contract, Tower Transit has the option of implementing dual-depot arrangements for certain bus services (i.e. have buses deployed from both Mandai & Bulim Bus Depots) to save costs on dead mileage. However, this was not implemented in acutal operations from September 2021.

SBS Transit also practices this for cost savings as part of their bid for the Bukit Merah Bus Package, where several long-distance bus services have buses launched from other bus depots under its negotiated contracts. In addition, some buses not part of the Bukit Merah Bus Package are garaged and launched from Ulu Pandan Bus Depot.

SBS Transit Bukit Merah Bus Package arrangements (Click to expand)

Bukit Merah Bus Package services – Ulu Pandan Depot (Full Control):
• 95, 120, 121, 122, 123/123M, 131M, 160/160M, 170/170X, 195, 201, 272, 273, 400

Bukit Merah Bus Package services – Ulu Pandan Depot (Partial Control):
• 5, 16/16M, 93 (shared with Bedok North Bus Depot)
• 57, 131, 145 (shared with Ang Mo Kio Bus Depot)
• 198 (shared with Soon Lee Bus Park)

Non-Bukit Merah Bus Package services – Ulu Pandan Depot (Partial Control):
• 10, 33, 65 (shared with Bedok North Bus Depot)
• 80, 132, 151 (shared with Hougang Bus Depot)

Takeover of Bus Interchanges

Tower Transit will be the anchor operator of Sembawang Bus Interchange, Yishun Bus Interchange and Lorong 1 Geylang Bus Terminal.

Following the loss of its bus operations in the Yishun and Sembawang region, both Yishun and Sembawang Interchanges will no longer be served by any SMRT bus route. Both bus interchanges will continue to host SBS Transit bus routes, in the form of twelve Seletar Bus Package services and Bus Service 117 respectively.

Under tender requirements, Tower Transit will operate and maintain these facilities, including all equipment and systems provided therein, as well as provide bus service information at these locations. In particular, it remains to be seen if the Land Transport Authority / Tower Transit will modernize the largely ageing/temporary staff facilities at Lorong 1 Geylang.

Transitioning of Bus Services

Drawing from the experience with the first two packages which involve operator changes, the LTA will transition services in the Sembawang-Yishun bus package in multiple tranches starting from 5 September 2021. With a smaller number of bus services and vehicles in each tranche, the bus operator will be able to better address any teething issues during the transition period.

For comparison, the initial term for the Bulim Bus Package was transitioned over three tranches, and Loyang Bus Package over two tranches.

Operator Changes for Bulim Bus Package:

  • Service 944 – Operated by Tower Transit from 29 May 2021
  • Services 653 & 657 – Operated by Tower Transit from 31 May 2021

Reclassification of City Direct services

An updated list of bus services under both Bulim and SembawangYishun Bus Packages released by the Land Transport Authority (LTA) in their press release confirms the formal allocation of City Direct bus services to Public Transport Operator (PTO) control under the Bus Contracting Model. These services were initially operated by private bus operators to augment the resources of PTOs under the Bus Service Enhancement Programme (BSEP), and were gradually handed over to PTOs after their Private Bus Operator (PBO) contracts expire.

Bulim Bus Package:

  • City Direct 653: Hume Avenue / Hillview Avenue ⇄ Marina Boulevard / Central Boulevard
  • City Direct 657: Jurong West Avenue 1 ⇄ Marina Boulevard / Central Boulevard

Sembawang–Yishun Bus Package:

In August 2021, the announced bus services to be operated by Tower Transit under the Sembawang-Yishun Bus Package included City Direct 670, which was not mentioned earlier.

Reorganised Night Bus network

The inclusion of bus services N1 and N2 within the SembawangYishun Bus Package bus service list hints at a likely reorganization of the Night Bus network in Singapore. Back in 2016, both NightRider NR1 & NR2 were part of the bus services announced under the SembawangYishun Bus Package, operated by SMRT under a negotiated contract.

Bus Redeployments

Main Article: Tower Transit – Transitioning to Sembawang-Yishun Bus Package

The awarding of the Sembawang-Yishun Bus Package would see several bus models being operated by Tower Transit Singapore for the first time, such as the Volvo B5LH hybrid bus, MAN A24 articulated bus, MAN A95 (Euro 6) double-deck bus, and the MAN A22 (Euro 6) single-deck bus.

To facilitate driver training, Tower Transit took in several buses in March 2021. The bus models are:

  • MAN A95 (Euro 6)
  • MAN A22 (Euro 6)
  • MAN A24
  • Mercedes-Benz OC500LE
  • Volvo B5LH

Owing to height restrictions within the basements of Changi Airport Terminals 1, 2 & 3, MAN A24 articulated buses are deployed on Bus Service 858 to meet LTA requirements for high-capacity buses. Among all bus services within the Sembawang-Yishun Bus Package, only Bus Service 858 mandates the use of articulated buses, making Tower Transit rather likely to absorb these buses.

The first MAN A24 (SMB8015R) was leased to Tower Transit in March 2021 for staff training and familiarisation. This would be the first articulated bus operated by Tower Transit in Singapore.

Volvo B5LH

Most (17) of the 25 Volvo B5LH buses currently leased to SMRT Buses are deployed on Service 859 / 859 / 859B which are part of the Sembawang-Yishun Bus Package. These buses are likely to remain allocated to Service 859 and its variants, making it likely for Tower Transit to absorb these buses.

The first Volvo B5LH (SG3016Z) was leased to Tower Transit in March 2021 for staff training and familiarisation.

Mercedes-Benz OC500LE

In March 2021, it emerged that Tower Transit would be taking over some Mercedes-Benz OC500LE buses from SMRT’s fleet, with the first unit (SMB9L) transferred to Tower Transit for staff training and familiarization. These OC500LE buses were registered between 2008-2009 and had already undergone mid-life refurbishment, thus granting them just 4-5 years left of their 17-year statutory lifespan.

Previously, in early 2021, SMRT sought Expressions of Interest for the Sales of Mercedes OC500 Buses and Citaro Buses, raising the possibility that the operator sought to dispose of its excess buses early. As detailed in our article, following the loss of the Sembawang-Yishun Bus Package and assuming only Government-owned buses are transferred to Tower Transit, SMRT Buses would have been left with an excess of roughly 190 single deck buses come late 2021.

The total number of buses to be transferred remains unknown at this point in time.

MAN A22 (Euro 6) & MAN A95 (Euro 6)

In March 2021, MAN A22 (Euro 6) & MAN A95 (Euro 6) buses were drawn from the LTA storage bus fleet and leased to Tower Transit in preparation for the commencement of operations in September 2021.


Bus Service 825 operates a full fleet of electric BYD C6 midibuses. As of October 2020, SMRT Buses operates 4 of these buses solely for Bus Service 825, leased from BYD (Singapore) Pte. Ltd.

To facilitate charging for the BYD C6 buses, charging stations were installed at Ang Mo Kio Bus Depot, where these buses are garaged. Should Tower Transit choose to take in these buses, charging stations might be installed at Mandai Bus Depot in order to consolidate bus operations at Mandai; otherwise, Tower Transit would have to seek alternative arrangements involving off-site charging of these buses.

In September 2021, the operator logo on these buses were removed.

Bus Operations at AMDEP

Bus operations at SMRT’s Ang Mo Kio Bus Depot (AMDEP) will be significantly scaled-down after the transition to the SembawangYishun Bus Package. Nearly all bus services are being transferred to Tower Transit—except Bus Service 110, City Direct 652 and City Direct 670 which are being operated on a negotiated contract basis. However, AMDEP is unlikely to close down in the near future, as SMRT Automotive Services’ maintenance facility (which services SMRT Taxis among other commercial vehicles) is also located at the depot.

In addition, the fate of Yishun Temporary Bus Interchange remains unknown. The facility is used for the overnight parking of Ang Mo Kio Depot buses—no longer required after a shift to Mandai Depot.

Similarly, Seletar Bus Depot is also used for the overnight parking of SMRT Ang Mo Kio Depot buses.

Depot Open House

As with previous years, it was initially expected that an open house event will be hosted at Mandai Bus Depot in the months before September 2021. However, amid ongoing COVID-19 restrictions, no depot open house will be held this time.

Previously hosted depot open house events are:

Other initiatives

Other initiatives by Tower Transit include:

  • Increasing paternity leave for its male employees to three weeks
  • Installation of 360° camera systems in all its buses to help its Bus Captains stay safe on the roads
  • Programmes to promote inclusivity at the Jurong East Bus Interchange
  • Training all frontline staff in selected modules of the Level 1 WSQ Certificate in Service Excellence
MAN Lion's City SD 3-Door (SG4002G) - Surround View Monitor
MAN Lion’s City SD 3-Door (SG4002G) – Surround View Monitor with Anti-Fatigue System camera

Of particular interest is the expected installation of Advanced Driver Assistance System (ADAS) onboard all its buses. While newer buses have ADAS systems fitted as standard, individual bus operators have also progressively retrofitted such systems to older buses.

The exact model of 360° camera system planned for installation remains unknown. However, one such 360° camera system (Surround View Camera System) was previously trialled on the 3-door MAN Lion’s City SD (SG4002G) and SBS3337K (Tower Transit Volvo B9TL).


41 thoughts on “Gearing up for 2021: Things to expect ahead of the Sembawang–Yishun Bus Package transition

  • 28 October 2021 at 5:36 PM

    Why can’t TTS just operate NR1 and NR2?

  • 10 April 2021 at 12:09 PM

    AFAIK confirmed fleets
    MB Citaro B1/2/3
    MAN A22 E5 B1/2
    Yutong E12
    ADL Enviro500 B1
    Volvo B9TL B2/3/4
    MAN A95 E6 three-door

    MB Citaro B3(858)
    MB OC500LE B1/2
    MAN A22 E5 B2/3
    MAN A22 E6 B1/2
    MAN A24
    ADL Enviro500 B1/2
    MAN A95 E5 B2/3
    MAN A95 E6 B1
    Volvo B9TL B4(TBC)

  • 26 March 2021 at 10:14 AM

    I think taking in the BYD C6 is not optional but required. How is TTS going to operate service 825 without them?

    • 26 March 2021 at 12:24 PM

      Exactly. I believe there are chargers installed in Mandai depot for that purpose and possible future intake of BYD buses (if they purchase more).

      • 27 March 2021 at 8:00 AM

        I see, that’s good. I also hope the E12s from SMRT won’t transfer to TTS just for 944. Honestly it’s a waste deploying buses with charging ports on such short routes. They should stay with SMRT and go on another service.

        • 28 March 2021 at 5:57 PM

          As for the Yutong buses, I think they can redeploy on either 66, 77, 106 or 143 those kind of long routes. I have a feeling the Yutong SD and DD buses in SMRT could be transferred to TTS Bulim but we’ll see how that plays out.

          • 29 March 2021 at 12:48 PM

            True, they should go on longer routes. Right now all their deployments are short routes… Although I would find it unfair if SMRT will be forced to give up their Yutongs.

  • 26 December 2020 at 3:51 PM

    Trust me,After a couple years of operation,TTS will send back a few A95 and Citaros back to storage.


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