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Central Alberta train derailment prompts calls for enhanced analytics of railcar wheels

The agency says 1 million older wheels remain in service and better use of detector data could help prevent future derailments.

  • On Thursday, the Transportation Safety Board recommended the rail industry use enhanced analytics on sensor data to identify failing wheels, following an investigation into a 2023 derailment near Uncas, Alberta.
  • An April 5, 2023, derailment involving 18 Canadian National Railway Company grain cars left the tracks near Uncas, Alberta, after investigators determined a shattered rim on a wheel manufactured in 1991 caused the incident.
  • Despite multiple visual inspections, no issues were identified before the failure; TSB Chair Yoan Marier noted that sensors failed to identify the increasing impact trend preceding "catastrophic rim failure."
  • Approximately one million wheels manufactured before 2003 remain in service across Canada and the United States, and Marier stated that while most are likely safe, they possess a greater risk of failure.
  • Transport Canada stated it will provide a formal response to the TSB within the timeline mandated by the Canadian Transportation Accident Investigation and Safety Board Act, emphasizing its commitment to strengthening rail safety.
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13 Articles

The Toronto StarThe Toronto Star
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Transportation Safety Board calls for better wheel checks after train derailment

EDMONTON - The Transportation Safety Board says more needs to be done to ensure train car wheels are up to snuff after a broken rim led to a derailment east

·Toronto, Canada
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CTV News broke the news in Toronto, Canada on Thursday, September 24, 2026.
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