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Toronto Subway Line 2 - Scarborough extension


Development of the Scarborough Subway Extension (SSE) commenced in 2023 to add a 7.8km three station section to Line 2 on Toronto’s subway.

The extension will allow for shorter journey times between downtown Toronto and the Scarborough district that lies to the east of the city centre, and provide connections to Line 5 (the Eglinton Crosstown LRT) and regional train and bus services. 

It will also replace the Line 3 route through Scarborough which was withdrawn from service in 2023 following almost 40 years of operations.

To support the build programme, Ricardo was appointed as the project's Independent Safety Assessor (ISA) by the Scarborough Transit Connect consortium in November 2023.



As the ISA, our team will conduct regular onsite audits and document reviews to ensure the processes and stipulations set out in the project’s Safety Plan, Security Plan, and submitted Safety Cases are fully adhered to throughout the design, construction, testing and commissioning stages.

The assessments will be undertaken in accordance with recognised standards such as the Canadian Method for Risk Evaluation and Assessment, and EN50126, the international standard for the specification and demonstration of Reliability, Availability, Maintainability and Safety (RAMS) for railway applications. 



Our specialist assessors will work alongside the client’s project teams to ensure all parties play their part in delivering an extended Line 2 that is safe, efficient and completed on schedule. The system is expected to be ready for passenger service by 2030.


Scarborough Transit Connect

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Canada, Toronto

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