Automatic Train Control

In by SEO Anseo

The Toronto Transit Commission (TTC) is in the midst of a transformational shift to Automatic Train Control (ATC), a $563-million project that promises improved efficiency and increased passenger capacity on its busiest subway line by up to 25 percent. Once ATC is installed on the entirety of Line 1, the TTC will be able to run trains less than two minutes apart, instead of the current two minutes and 30 second minimum.

This project involves replacing the current fixed-block signalling system with ATC which is a “moving block” system. ATC uses radio signals to communicate their speed and location to a computerized control system in real time. The automated system then dictates how fast the trains travel in order to keep them a safe distance apart. Because the system can more accurately pinpoint the location of trains and closely control their movements, it allows the TTC to run them much closer together.

To ensure compliance and timely completion, our team was employed on this project to perform the following roles:


  • develop various project controls reports as required (productivity, manpower histograms, cost reports, etc.);
  • review and analyze schedules submitted by other parties contributing to the project;
  • update project schedule, monitor actual progress and compare updates with the baseline and report progress against schedule;
  • assist project managers in creating short-term schedules and monitoring these schedules to determine their impact on the master schedule;
  • assist in the development of MAXIMO (a database used for the maintenance of signalling assets).

On December 17, 2017, the 8.6km Toronto-to-York subway extension operating on the new ATC signalling system opened to the public.

Want to learn more about similar projects? Get in touch today.