Rail transportation safety investigation R15D0103

Update: The TSB has completed this investigation. The report was published on 22 February 2017.

Table of contents

Runaway and derailment of cars on non-main track

Canadian Pacific Railway
Stored cut of cars
Mile 2.24, Outremont spur
Montréal, Quebec

View final report

The occurrence

On, a cut of empty intermodal cars in the possession of Canadian Pacific Railway and stored near the Hochelaga Yard in Montréal, Quebec, ran uncontrolled, resulting in the derailmcars. The cars and railway track sustained damage. One car struck the wall of a property adjacent to the railway right-of-way. The occupants of 7 homes were evacuated. No dangerowere involved, and there were no injuries

Media materials

News release


Human intervention likely led to October 2015 uncontrolled movement and derailment of parked rail cars in Montréal, Quebec
Read the news release

Deployment notice


TSB deploys a team of investigators to a derailment involving a Canadian Pacific train in Montreal, Quebec

The Transportation Safety Board of Canada (TSB) is deploying a team of investigators to a derailment involving a Canadian Pacific train in Montreal, Quebec. The TSB will gather information and assess the occurrence.

Investigation information

Map showing the location of the occurrence


Photo of Guy Laporte

Guy Laporte joined the Transportation Safety Board of Canada in 2006. He had previously acquired valuable experience in the rail industry over a 27-year career at CN in Montréal, where he held various technician positions in Technical Services and supervisory positions with the railway’s Buildings and Bridges and Structures departments.

Since joining the TSB, Mr. Laporte has taken part in numerous rail accident investigations in Eastern Canada.

Mr. Laporte earned a diploma in Civil Engineering Technology from Montréal’s Collège Ahuntsic in 1978.


  Download high-resolution photos from the TSB Flickr page.

Class of investigation

This is a class 3 investigation. These investigations analyze a small number of safety issues, and may result in recommendations. Class 3 investigations are generally completed within 450 days. For more information, see the Policy on Occurrence Classification.

TSB investigation process

There are 3 phases to a TSB investigation

  1. Field phase: a team of investigators examines the occurrence site and wreckage, interviews witnesses and collects pertinent information.
  2. Examination and analysis phase: the TSB reviews pertinent records, tests components of the wreckage in the lab, determines the sequence of events and identifies safety deficiencies. When safety deficiencies are suspected or confirmed, the TSB advises the appropriate authority without waiting until publication of the final report.
  3. Report phase: a confidential draft report is approved by the Board and sent to persons and corporations who are directly concerned by the report. They then have the opportunity to dispute or correct information they believe to be incorrect. The Board considers all representations before approving the final report, which is subsequently released to the public.

For more information, see our Investigation process page.

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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