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CWAB Research Program: summary report

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DOIResolve DOI: https://doi.org/10.4224/40004104
AuthorSearch for: 1; Search for: 1ORCID identifier: https://orcid.org/0000-0002-3599-0724; Search for: 1ORCID identifier: https://orcid.org/0009-0006-3702-4059
Affiliation
  1. National Research Council Canada. Automotive and Surface Transportation
FunderSearch for: Transport Canada
FormatText, Technical Report
Physical description27 pages
Abstract
The National Research Council of Canada (NRC), with funding support from Transport Canada (TC), executed a multi-year research program focusing on the performance of freight car air brake systems in cold weather conditions. The Cold Weather Air Brake (CWAB) Research Program was initiated in response to long‑standing industry concerns and Transportation Safety Board (TSB) recommendations following incidents of uncontrolled train movements attributed to loss of brake effectiveness in extreme cold. The testing program spanned four calendar years (2021–2024) and was executed under controlled climatic conditions at the NRC’s CWAB facility in Ottawa, Canada. Each year of testing resulted in a report submitted to TC summarizing that year’s results. This report consolidates selected data to summarize the research outcomes in support of determining root causes of cold‑weather performance loss.
Date published
PublisherNational Research Council Canada
Copyright statement
  • © His Majesty the King in Right of Canada, as represented by the National Research Council of Canada, 2026.
LanguageEnglish
Peer reviewedNo
IdentifierAST-2026-0028
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Record identifiere225e5da-4f15-4594-a477-50a9cd0d40a4
Record created2026-09-23
Record modified2026-09-28

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