Metro has fixed at least 47 track circuits with problems since last month’s deadly train crash, and officials were working on 15 more Wednesday. The update, listed on a new Metro Web page, is the ...

The train control system designed to prevent Metro crashes is malfunctioning across the railroad, suggesting that a technological failure at the heart of last month's fatal crash might be widespread, ...

The TTC track circuit helps detect the occupation, presence, and departure of a train in a given area to ensure the safety of railway operations. Credit: Thales. French company Thales has secured a ...