Rail transportation safety investigation R24D0080
The occurrence
On 14 November 2024, Canadian National Railway Company (CN) freight train M32231-13 (the train) was travelling eastward on the south service track of Southwark Yard in Longueuil, Quebec, near Mile 69 of CN’s St-Hyacinthe Subdivision. It consisted of 102 cars: 60 loaded cars, 33 empty cars, and 9 residue cars. It weighed 9