Line 2 Automatic Train Control


Line 2 opened on February 26, 1966. It stretches 26.2 kilometres from Kipling to Kennedy station (31 stations in total). It has been operating on the same fixed block signal system since it opened. As part of the TTC’s ongoing modernization efforts and as a way to accommodate increased ridership and provide the best possible service to our customers, the signal system on Line 2 will be replaced with a new state-of-the-art signalling system known as Automatic Train Control (ATC). ATC is operational on Line 1.


What we’re doing

Planning has begun to re-signal Line 2 with the ATC signal system. This project will require design, installation, testing and commissioning of the new ATC system, on-train equipment and integration with new trains in the fleet, similar to what was done during the update on Line 1.


Increased reliability

  • ATC gives us the capacity to safely run more trains closer together which means more reliable service

Improved travel times

  • Trains on ATC run consistently and as close to the civil speed limit as possible, making travel times shorter and more consistent
  • New signals mean fewer delays due to signal issues

Lower Operating Costs

  • Train electricity usage will become much more efficient

Impacts to customers

The ATC system is complex. Installation, testing and commissioning activities can only be performed efficiently when trains are not operating.

To perform this work, the TTC will close portions of the subway during some weekends or overnight.

Information about weekend closures or overnight work will be posted in advance on our weekend subway closures page or service alerts page.

Next Steps

  • Stage Gate 1 (Approved for Planning) has been completed
  • Development of Technical Specifications and Request for Proposal (RFP) document is in progress.
  • Design enabling works for the Cable Route Management System is in progress
  • Early works commenced in Q2 2023

Related documents

TTC Board Reports

TTC’s 2020-2029 Key Capital Investment Priorities (January 27, 2020)



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