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Rail transportation safety investigation R22D0106

The TSB has completed this investigation. The report was published on 8 February 2024.

Table of contents

Non–main-track derailment

Canadian National Railway Company
Train M32621-11
Mile QM 192.1, CSX Transportation Montreal Subdivision
Near Huntingdon, Quebec

View final report

The occurrence

On 11 December 2022 at approximately 1912 Eastern Standard Time, Canadian National Railway Company train M32621-11 (CN M326) was travelling northward at approximately 22 mph in the Carr siding on the CSX Transportation Montreal Subdivision near Huntingdon, Quebec. As the train approached the switch leading to the main track at Mile QM 192.1 (White Station), the 2 head-end locomotives and 6 intermodal platforms derailed while travelling over a switch point derail. There were no injuries.

Media materials

News release


Incorrectly lined switch led to 2022 derailment of a CN freight train near Huntington, Quebec
Read the news release

Investigation information

Map showing the location of the occurrence


Photo of Patrick Sirois

Patrick Sirois joined the Transportation Safety Board of Canada (TSB) in 2020 as a Senior Regional Investigator with the Rail/Pipeline Investigations Branch.

Before joining the TSB, Mr. Sirois gained considerable experience in railway operations at Canadian National Railway Company (CN) from 2007 to 2016 holding various positions as a train conductor, locomotive engineer and trainmaster. Mr. Sirois is a member of the Air Brake Association, an educational organization dedicated to the development and improvement of braking systems in the railroad industry. Mr. Sirois also holds a degree in broadcasting from the Cité Collégiale in Ottawa and has several years of experience in the field of electronic media and in the telecommunications industry. He lives in Montréal, Quebec.

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.