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Rail transportation safety investigation R18D0067

Update: The TSB has completed this investigation. The report was published on 29 March 2019.

Table of contents

Main-track derailment

Canadian Pacific Railway
Mile 35.83, Adirondack Subdivision
Delson, Quebec

View final report

The occurrence

On , a Canadian Pacific (CP) train, while exiting northward the siding track at Mile 35.87 of the Adirondack Subdivision, derailed 5 loaded cars near Delson, Quebec. Approximately 300 feet of track was damaged. The train conductor was injured.

Media materials

News releases


Investigation report: July 2018 main-track derailment near Delson, Quebec
Read the news release

Deployment notice


SB deploys an investigator to a derailment in Delson, Quebec

Montréal, Quebec, 10 July 2018 — The Transportation Safety Board of Canada (TSB) is deploying an investigator to the site of a Canadian Pacific Railway derailment in Delson, 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 4 investigation. These investigations are limited in scope, and while the final reports may contain limited analysis, they do not contain findings or recommendations. Class 4 investigations are generally completed within 220 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.