Montreal Train Derailment Near Dorion at 9 AM Cancels Exo Services, Disrupts Vaudreuil-Hudson Line

Freight Train Derailment Near Dorion at 9 AM Disrupts Montreal Commute, Exo Vaudreuil-Hudson Line Partially Shut

A sudden freight train derailment west of Montreal on Wednesday morning triggered major commuter disruptions, forcing cancellations and halting service on a critical section of the Vaudreuil-Hudson Exo line.

The incident occurred around 9 a.m. near Dorion station, according to Exo officials. While no injuries were reported and none of Exo’s passenger trains were directly involved, the derailment immediately impacted rail operations, cutting off service between Vaudreuil and Sainte-Anne-de-Bellevue stations.

For thousands of commuters travelling between Montreal and its western suburbs, the disruption created delays, confusion, and last-minute route changes during an active weekday schedule.

Key train cancellations announced by Exo

Following the derailment, Exo confirmed multiple train cancellations on the Vaudreuil-Hudson line. The affected services included:

• Train 13 — departing at 9:55 a.m. toward Vaudreuil
• Train 22 — departing at 11:15 a.m. toward Montreal
• Train 15 — departing at 12:30 p.m. toward Vaudreuil
• Train 24 — departing at 1:55 p.m. toward Vaudreuil

These cancellations hit both inbound and outbound travel, affecting not just morning commuters but also mid-day passengers, shift workers, and students relying on scheduled rail service.

Because the disruption happened during operational hours, many passengers were already en route or preparing to travel, amplifying the impact across the network.

What caused the disruption and what we know

The derailment involved a freight train, not an Exo commuter train. Officials emphasized that Exo equipment and passengers were not directly part of the incident, which helped avoid injuries and larger safety concerns.

However, because freight and commuter trains share rail infrastructure in this corridor, the derailment blocked tracks needed for passenger service. This forced an immediate shutdown of a key stretch of the line.

The affected section — between Vaudreuil and Sainte-Anne-de-Bellevue — is one of the most important links connecting suburban communities to Montreal, making the disruption particularly significant.

Alternate routes: buses deployed to ease disruption

To help commuters navigate the interruption, Exo recommended alternative transit options. Passengers were advised to use:

• Bus 40 — connecting Vaudreuil to the Côte-Vertu Metro station
• Bus 1232 — serving Île-Perrot, Pincourt, Dorion and Vaudreuil

While these alternatives provided a temporary solution, switching from train to bus routes typically results in longer travel times and increased crowding, especially during peak hours.

Commuters unfamiliar with these routes also faced additional challenges, including transfers and navigating different transit systems mid-journey.

Why this derailment matters for daily commuters

The Vaudreuil-Hudson line is a vital commuter artery linking Montreal to rapidly growing suburban areas west of the city. Many residents depend on it daily for work, education, and essential travel.

Disruptions on this line can quickly cascade into broader transit issues, affecting bus networks, metro connections, and even road traffic as more commuters shift to cars or ride-hailing services.

Midday cancellations, like those seen in this incident, can be particularly disruptive because they impact flexible schedules — including healthcare visits, part-time jobs, and return trips.

Passengers were encouraged to stay updated through official transit channels, including the Exo Vaudreuil-Hudson line page, while broader coverage and updates continue via CBC News.

No injuries reported but service impact remains significant

Despite the scale of disruption, officials confirmed that no injuries were reported, and Exo trains were not involved in the derailment. This helped prevent a more serious emergency situation.

Still, the operational impact remains substantial. A single freight train derailment was enough to halt service across a major commuter corridor for hours, underscoring the vulnerability of shared rail infrastructure.

Passengers affected by the incident had to quickly adapt, whether by switching to buses, delaying travel, or making alternate arrangements altogether.

What happens next

Attention now shifts to how quickly crews can clear the tracks and restore normal operations. Transit users will be watching closely for updates on service resumption and whether additional delays or cancellations will follow.

For now, the derailment near Dorion stands as a reminder of how a localized rail issue can ripple across an entire commuter network within minutes.

As Montreal commuters navigate the disruption, the priority remains clear: restoring safe, reliable service while keeping passengers informed every step of the way.