​​Rail​ transportation safety investigation R26D0039

The TSB deployed investigators to the site on July 5, 2026, and the occurrence is being assessed. 

Table of contents

    On 5 July 2026, Canadian National Railway Company (CN) freight train A46121-05 was proceeding south on the main track of the Joliette Subdivision when 49 rail cars derailed in various positions near Mile 120.7 in Repentigny, Quebec. There were no dangerous goods released, and no injuries reported. 

    The TSB deployed investigators to the scene to gather information and assess the incident. 

    Media materials

    Deployment notice

    TSB deployed to Repentigny, Quebec following train derailment

    Investigation information

    Photos

    Figure 1. The CN freight train following the derailment on July 5, 2026 in Repentigny, Quebec (Source: Transportation Safety Board of Canada) Figure 2. The CN freight train following the derailment on July 5, 2026 in Repentigny, Quebec (Source: Transportation Safety Board of Canada)

    The TSB is an independent agency that investigates air, marine, pipeline, and rail transportation occurrences. Its sole aim is the advancement of transportation safety. It is not the function of the Board to assign fault or determine civil or criminal liability.

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