A freight train derailment west of Montreal is causing significant disruptions to commuter service on the Vaudreuil-Hudson Exo line, impacting the Wednesday morning and evening commutes for thousands of residents. The incident, which occurred near Dorion station around 9 a.m. On Wednesday, March 18, 2026, has halted rail traffic in both directions between Vaudreuil and Sainte-Anne-de-Bellevue.
While no injuries were reported, the derailment involving two empty rail cars has prompted a full investigation by Canadian Pacific Kansas City (CPKC), the railway operator. Exo, Montreal’s commuter rail service, confirmed that none of its trains were directly involved in the incident, but service has been suspended as crews operate to clear the tracks. The disruption to the Vaudreuil-Hudson line is a major inconvenience for those who rely on the train for daily travel to and from Montreal.
As of 2 p.m. Wednesday, Exo stated that the timeline for resuming rail traffic between Vaudreuil and Sainte-Anne-de-Bellevue remains unclear. The extent of the damage and the complexity of the clearing operation are contributing to the uncertainty. However, rail traffic is continuing between Baie-d’Urfé and Lucien-L’Allier stations in downtown Montreal, offering a limited alternative for some commuters.
Cancelled Trains and Commuter Alternatives
Exo has released a list of cancelled train rides as a direct result of the derailment. Specifically, the following departures between Vaudreuil and Sainte-Anne-de-Bellevue have been cancelled: Train 13 (9:55 a.m. Towards Vaudreuil), Train 22 (11:15 a.m. Towards Montreal), Train 15 (12:30 p.m. Towards Vaudreuil), Train 24 (1:55 p.m. Towards Vaudreuil), Train 17 (3:10 p.m. Towards Vaudreuil), Train 19 (3:45 p.m. Towards Vaudreuil), Train 21 (4:40 p.m. Towards Vaudreuil), Train 111 (5:20 p.m. Towards Vaudreuil), Train 27 (6:05 p.m. Towards Vaudreuil), Train 29 (6:30 p.m. Towards Vaudreuil), Train 30 (7:55 p.m. Towards Montreal), and Train 31 (9:15 p.m. Towards Vaudreuil).
In addition to the localized cancellations, several trains along the entire Vaudreuil-Hudson line have likewise been removed from the schedule, including Train 23 (5 p.m. Towards Vaudreuil), Train 25 (5:40 p.m. Towards Vaudreuil), Train 26 (5:00 p.m. Towards Montreal), and Train 121 (4:20 p.m. Towards Vaudreuil). Commuters are strongly advised to check the Exo website for the most up-to-date information on service disruptions.
Exo is providing alternative transportation options to mitigate the impact of the derailment. The 40 bus route connects the Vaudreuil station to the Côte-Vertu Metro station in Montreal. Montreal’s transit agency, the STM, is also operating a shuttle service via the 15 bus line, linking Baie-d’Urfé and Sainte-Anne-de-Bellevue. A dedicated “transbus” shuttle service departs from Baie-d’Urfé, serving the Île-Perrot, Pincourt, Dorion, and Vaudreuil stations.
Impact on Regional Commuters
The Vaudreuil-Hudson line is a vital transportation artery for residents of the western suburbs of Montreal, connecting communities along the Ottawa River to the city center. The disruption is particularly acute for those who rely on the train to reach jobs, schools, and appointments in Montreal. The Dorion station, where the derailment occurred, is a key transfer point for many commuters.
The incident highlights the vulnerability of the region’s transportation infrastructure and the potential for significant disruptions when unforeseen events occur. While Exo is working to provide alternative transportation, the bus routes are likely to be more crowded and capture longer than the usual train commute. The situation underscores the importance of ongoing investment in rail infrastructure and safety measures.
CPKC has stated it is investigating the cause of the derailment, but has not yet released any preliminary findings. The Transportation Safety Board of Canada may also launch an investigation, depending on the circumstances. The focus now is on safely clearing the tracks and restoring rail service as quickly as possible.
Looking Ahead
Exo has not yet provided a firm timeline for the resumption of full service on the Vaudreuil-Hudson line. Commuters are advised to continue monitoring the Exo website and social media channels for updates. The railway operator, CPKC, is expected to provide further information on the cause of the derailment and the progress of the cleanup operation in the coming days. The next official update from Exo is expected Thursday morning, March 19, 2026.
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