Metrolinx writes off $500 million in signalling work

Ontario transit agency Metrolinx says it will write off $504 million spent on signalling upgrades around Toronto’s Union Rail Corridor after changes to its GO Expansion plans made much of the work obsolete. According to the agency’s annual report, the signalling project began in 2013 and was intended to modernize key parts of the commuter rail network. However, the project was paused in 2023 after officials identified compatibility risks while track designs were still being developed. Metrolinx says it now has a clearer picture of how it will expand GO service, and that only some completed work will be folded into the updated plan. The agency said the shift reflects broader changes to how it intends to deliver higherfrequency, twoway, allday GO train service across the Toronto region.