The future of TTC’s Line 3 Scarborough (SRT)
Scarborough Busway (Line 3 Bus Replacement)
The Scarborough Busway is now under construction and is scheduled to enter service in Fall 2026. This dedicated bus corridor will replace Line 3 train service, which was decommissioned in 2023. The Busway is designed to provide continuous, reliable, and faster bus service for Scarborough commuters.
Key Details about the Scarborough Busway:
- Route: The Busway will operate along approximately 4 kilometres of the former Line 3 right-of-way, following the same general alignment as the previous train service. The route will begin at Kennedy Station, with stops at Tara Avenue/Mooregate Avenue, Lawrence East Station, and Ellesmere Station. From Ellesmere Station, buses will transition to Ellesmere Road’s priority bus lanes to connect to Scarborough Town Centre.
- Dedicated Infrastructure: The Busway will feature dedicated lanes and corridors to bypass regular traffic congestion, ensuring faster and more reliable travel times for passengers.
- Service: Multiple TTC bus routes will use the Busway, offering frequent express service to accommodate the significant passenger demand previously served by Line 3 trains.
- Passenger Experience: While buses have lower capacity than trains, the TTC will maintain increased service frequency to manage ridership and minimize disruptions for commuters.
- Travel Time Savings: Passengers will save approximately 7 minutes compared to the current on-street bus replacement service, thanks to the dedicated corridor and priority infrastructure.
The Scarborough Busway is a major investment in surface transit infrastructure, improving connectivity in eastern Scarborough and linking to other rapid transit services.
Transit and Rail Planning Assessment Process (TRPAP)
An Environmental Project Report (EPR) for the Line 3 Busway was completed as part of the Transit and Rail Project Assessment Process Regulation (Ontario Regulation 231/08), which is an environmental assessment process specific to public transit projects. The EPR includes detailed studies and evaluation of the potential project impacts as well as proposed measures to mitigate the impacts. The review period for the EPR for the Line 3 Busway has closed. A statement of completion has been issued and is available by clicking here.
View the EPR in the Environmental Project Report by clicking here.
For questions related to the interim bus replacement plan contact the project’s Senior Community Liaison, Arjun Sahota via e-mail, arjun.sahota@ttc.ca.
Existing On-Street Line 3 Bus Replacement Service
In July 2023, the TTC decommissioned service on Line 3, SRT. An on-street bus replacement service is now operating southbound via Midland Avenue and northbound via Kennedy Road between Scarborough Centre and Kennedy stations. The interim bus replacement plan not only addresses Line 3's reliability issues but also allows the TTC to deliver AODA compliant service. The transit priority measures that have been implemented include: dedicated, red-painted bus lanes; transit signal priority; and adjustments to curbs, pavement markings, and turn restrictions at key locations.
Service Update Effective February 18, 2024
The official Line 3 On-street Bus Replacement Plan with full transit priority measures and full priority routing went into effect on November 19, 2023. The Line 3 Bus Replacement Plan reduces travel times and improves the quality of service for customers travelling between Kennedy and Scarborough Centre stations. Learn more about all of the service changes regarding the Line 3 Bus Replacement Plan here.
As of February 18, 2024, the north side of Kennedy Station’s Platform A has been closed for construction related to Metrolinx’s Scarborough Subway Extension project. Most routes using bus bays on the north side of Platform A will be reassigned to new bus bays on the east side of Platform B. For more information and full details of the changes coming to Platform A, click here.
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Consultation - Line 3 Bus Replacement Plan (2020 - 2021)
The consultation:
- Provided detailed information about bus service alternatives as well as the traffic impact and mitigating measures
- Received customer and community input to inform alternatives for bus service in the SRT corridor for 2023-2030 to optimize implementation; and,
- Reported back to customers and the community to explain how their input improved planning, including through a report to the TTC Board in April 2021.
Round 1 engagement summaries
- Stakeholder meeting 1 summary
- North Scarborough Cluster meeting summary
- South Scarborough Cluster meeting summary
- Public survey summary
- Scarborough Neighbourhood Planning Table resident member focus group summary
Round 2 engagement summaries
- Stakeholder meeting 2 summary
- Public meeting summary
- North Scarborough Cluster meeting summary
- South Scarborough Cluster meeting summary
- Public survey and pop-up summary
- Resident focus group summary
On April 14, 2022, the TTC Board directed staff to proceed with Options 1 and Options 4 of the proposed plans. Details are available below:
Option 1 Hybrid Line 3 Right-of-Way. This is the recommended option. Parts of the existing Line 3 right-of-way, between Ellesmere and Kennedy stations, will be converted into a busway for buses to operate exclusively on. This will take up to two years to construct after the closing of the trains on Line 3.

Option 4 Kennedy and Midland Couplet. This is recommended as the interim option while the busway option is constructed. Buses would operate southbound via Midland and northbound via Kennedy between Scarborough Centre and Kennedy stations.

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Accessibility for Ontarians with Disabilities (AODA)
TTC has a strong organizational commitment to make Toronto’s transit system accessible and providing universal benefits to the millions of customers who use TTC annually.
Four of the six Line 3 stations were not accessible. The bus replacement plan not only addresses Line 3's reliability issues, it provides AODA-compliant service and ensures AODA standards are met, providing accessible transportation options for riders in this corridor of the city.
With the end of Line 3 train service and the move to on-street bus replacement service, all stops and the connection between Kennedy and Scarborough Centre stations are accessible.
Read more about the TTC’s Accessible Transit Services Plan
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Frequently Asked Questions
SRT Operations
What were the key challenges to keep the SRT running safely to 2030?
There were a number of challenges in keeping the SRT running, which is why it was decommissioned in 2023. The key challenges included:
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Aging vehicles: The SRT vehicles were designed to be retired in 2010. They operated over 10 years past their design life of 25 years.
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Maintenance reliability: The SRT vehicles became increasingly more difficult to maintain. Reliability degraded, and parts are becoming were becoming difficult to find.
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Service reliability: The SRT's service was reduced by 50% from peak in the Fall of 2020 due to technical issues. There were limited spare trains, which are unable to maintain reliable service standards and continue to make service reliability vulnerable.
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Inclement weather: The SRT was susceptible to inclement weather including overheating in the summer and service suspension in the winter due to snow and ice.
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Accessibility: All TTC stations and vehicles must be AODA compliant by 2025. Lawrence East, Ellesmere, Midland and McCowan stations were not barrier-free and not included in the capital plan to receive accessibility upgrades.
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Cost: The overhaul to keep the SRT safely running until 2030 was estimated to cost over $520 million, this was unfunded. This was the bare minimum and would not have guaranteed reliable service.
What is the process to convert sections of the SRT into a busway?
The TTC, in partnership with the City of Toronto, has secured funding for the Scarborough Busway project. Construction is now underway to convert sections of the former Line 3 right-of-way into a dedicated bus corridor. The process involves:- Removing existing rail infrastructure from the decommissioned SRT guideway.
- Upgrading the corridor with pavement, drainage, and safety features suitable for bus operations.
- Installing new stops and connections at key locations, including Kennedy Station, Tara Avenue/Mooregate Avenue, Lawrence East, and Ellesmere.
- Maintaining priority bus lanes on Ellesmere Road to connect the Busway to Scarborough Town Centre.
The Busway is scheduled to open in Fall 2026, providing faster and more reliable service, saving riders approximately 7 minutes compared to the current on-street bus replacement service.
Has the TTC secured the outstanding funds for the SRT busway, when will the project be completed?
Toronto City Council approved funds to construct the Line 3 Busway on February 14, 2024. The TTC intends to begin construction on the Line 3 Busway in 2025, and have the Busway begin operation in Fall 2026.Transit Service
What routes have changed since SRT service was discontinued?
The following major bus routes have been adjusted, extending from Scarborough Centre to Kennedy Station:
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38 Highland Creek – currently Scarborough Centre Station to University of Toronto Scarborough Campus, through the Rouge Hill community to Rouge Hill GO Station
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129 McCowan North – currently Scarborough Centre Station to Steeles Avenue and into York Region
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131 Nugget – currently Scarborough Centre Station to Malvern Town Centre and Morningside Avenue
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133 Neilson – currently Scarborough Centre Station to Centenary Hospital, Malvern Town Centre, and Finch Avenue East
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903 Scarborough Express – Kennedy Station to Centennial College via Progress Avenue and Kennedy Road
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939A/B Finch Express – currently Scarborough Centre Station to Finch Station and Finch West Station
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954 Lawrence East Express – from Lawrence East Station to Starspray Loop via Lawrence Avenue East, extended to Kennedy Station via Midland and/or Kennedy
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985A Sheppard East Express – from Scarborough Centre Station to Don Mills Station
These buses run express from Scarborough Centre Station to Kennedy Station, all routes serving an intermediate stop at Lawrence Avenue East. The buses operate via transit priority measures on Midland Avenue, Ellesmere Road, and Kennedy Road.
Does on-street bus service mimic the SRT schedule? (First train, last train and headways?)
The bus replacement service is operating the same hours as Line 3, from approximately 6 a.m. to 1:30 a.m. on all days. The bus replacement plan offers headways at better than 1 minute during peak periods, and up to 2 minutes in the late evening period.
Which Line 3/SRT stations permanently closed in 2023?
Kennedy Station and Scarborough Centre Station remain open for buses. The remaining four stations are permanently closed, and customers are being served by buses on street.
I live near a former SRT station. How do I access transit now?
The buses are running express from Scarborough Centre Station to Kennedy Station, with all of the routes serving an intermediate stop at Lawrence Avenue East and Ellesmere Road.
For customers near Ellesmere Station, the 95 York Mills bus will continue to serve Ellesmere Road, and north-south bus routes on Kennedy (43) to Scarborough Centre (B branch only) and Kennedy Station, and Midland (57) to Kennedy Station.
Customers near Midland Station can use the 43B Kennedy to reach Scarborough Centre Station, and the 43B Kennedy and 57 Midland to reach Kennedy Station.
Customers near Lawrence East Station will continue to be served by 54 Lawrence East and 954 Lawrence East Express. To reach Kennedy Station, customers can use 43 Kennedy and 57 Midland. To reach Scarborough Centre, customers can use 43B Kennedy.
Customers at McCowan Station are a short walk to Scarborough Centre Station where frequent bus service to Kennedy Station is available. Customers around McCowan Station will continue to be served by 9 Bellamy, 16 McCowan, and 134 Progress.
Customer/Community Experience
I am a former SRT transit customer, how has my trip changed as I am now on a bus?
The updated bus routes are saving our customers the transfer in their journey at Scarborough Centre Station and offer more reliable service. Travel time change that has occurred is captured in the graphic below.
Do the additional buses create added congestion and pollution?
The TTC is purchasing hybrid buses in a commitment to greening our fleet and some of these vehicles will operate in this corridor. These eco-friendly vehicles incorporate hybrid technology and run off power generated onboard that is fueled by diesel engines. Though the vehicles are still using fuel to produce energy, they consume up to 30 per cent less than other non-hybrid buses.
Is there a possibility of widening the RT corridor to allow for uses such as cycling, since some sections will already need to be widened?
The TTC is a committed partner to ensuring all active modes of travel are considered and will review the potential opportunities of pursuing cycling facilities as a separate initiative and engage with the stakeholders concurrent to the existing project. Based on the current assessment of the corridor, there simply is not enough space between Ellesmere and Lawrence stations to incorporate cycling facilities within the existing transit right of way. The TTC’s main priority at this time is to minimize the time in which customers are without a fast and efficient higher-order transit connection.
Kennedy Station Parking-Lot Closures
Where am I supposed to park now?
The nearest commuter parking is available at Warden Station North Commuter Lot (920 spaces).Why is this lot being closed early?
The north commuter lot was planned to be closed in 2024 for CreateTO development. To address safety and congestion concerns in the bus terminal, it is necessary to retire approximately 200 parking spaces early and convert the parking into a layover area until the opening of the second terminal, currently under construction at the site of the former south commuter parking lot.Will parking become available again at Kennedy Station?
No. Commuter parking will no longer be available at Kennedy Station after August 21, 2023. -
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News Releases, Reports & Community Updates
February 4, 2021:
TTC Board to discuss options for continued service along the Scarborough Rapid Transit Corridor
February, 10, 2021:
September 15, 2021:
April 14, 2022:
Line 3 Bus Replacement Study Final Recommendations report.
April 14, 2022:
Line 3 Bus Replacement Study Final Recommendations presentation to the TTC Board.
May 8, 2023:
Line 3 Bus Replacement Community Update - May 2023
May 24, 2023:
TTC opens its doors to transit history
August 24, 2023:
TTC, City improving Line 3 Scarborough bus shuttle routes as train service set to permanently end
September 21, 2023:
September 26, 2023:
November 16, 2023:
Consultant Report - Hatch LTK, Scarborough Rapid Transit (SRT) Vehicle Accident Investigation ReportDecember 11, 2023:
Line 3 Busway Community Consultation Presentation
Line 3 Busway Community Consultation Summary Notes - Round One Public Consultation
December 15, 2023:
Consultant Report – Systra Canada – Independent Review – Report SRT Line 3 Incident
January 25, 2024:
Scarborough Rapid Transit (SRT) Line 3 Bus Replacement and Busway Status Update to TTC Board
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Service Changes and Update
November 19, 2023:
Line 3 Bus Replacement Plan takes effect Sunday, November 19
October 8, 2023:
903 Kennedy-Scarborough Centre Express
954 Lawrence East ExpressSeptember 3, 2023:
903 Kennedy-Scarborough Centre Express service service replaces Line 3 shuttle buses
McCowan Station closed
Ellesmere Station closed
Midland Station closed
Lawrence East Station closedAugust 24, 2023:
TTC Confirms Train Service on Line 3 will not restart following July 24 derailment
August 21, 2023:
Kennedy Station Commuter Lot – Parking Reduction
October 9, 2022: