A derailment near Union Station on Monday morning has caused widespread and ongoing delays across the GO Transit network, with service disruptions continuing through the evening commute due to resulting signal issues.
At 8:16 a.m., a Kitchener-bound GO train departing Union Station experienced a low-speed derailment where the rear of the train came off the track and struck a track switch. The impact disabled the train and triggered signal problems across the network. Metrolinx confirmed the train has remained in place since the incident.
No injuries were reported. Passengers were safely transferred to another train shortly after the derailment.
By 7 p.m., all seven GO lines were reporting major delays, with track access limited and train movement heavily restricted. GO advised commuters to follow station announcements and staff directions, as platforms and schedules were subject to frequent changes.
Line-specific updates
- Kitchener, Lakeshore West, Lakeshore East: Riders may experience delays, cancellations, and modifications until the issue is fully resolved.
- Barrie and Stouffville: Shuttle train service is running between Downsview Park GO and Aurora GO, and between Kennedy GO and Mount Joy GO. Travelers heading north of Aurora were advised to consider waiting for GO bus service.
- Union Station access: Trains were unable to travel through Union Station, forcing them to terminate or hold at stations.
GO recommended commuters use TTC routes into Union Station instead, while warning that the disruption could extend into Tuesday’s morning commute.
The UP Express was out of service for much of the morning, replaced by express buses between Union Station and Pearson Airport. Service resumed just before 12:30 p.m., though wait times remained longer than normal.
The TTC also faced separate issues when Line 1 service was briefly suspended between St. Andrew and Spadina stations due to an injury on the tracks, though service has since resumed.
Riders on the Kitchener Line should prepare for possible disruptions Tuesday morning. GO Transit plans to operate on an adjusted schedule following a train derailment early Monday that shut down several lines and led to widespread commuting delays.
Metrolinx CEO Michael Lindsay confirmed on LinkedIn that the derailed train has been re-railed and is expected to be cleared shortly. He added that Tuesday’s altered service is designed to maintain as many peak-hour trips as possible on the system’s busiest routes.