Canadian National Railway and the Transportation Technology Center have established a northern megasite near Winnipeg on the main lines of the CN system to study the effects of cold climate on heavy-axle load operations. The work is being performed as part of the Association of American Railroads' Strategic Research Initiative on HAL Implementation. Tests that have been established at the site include a premium rail performance test installed on a 5° curve and a top-of-rail friction control materials evaluation, as well as a premium insulated joint performance test and a seasonal substructure evaluation. Planned future work includes field evaluation of bridge approach remediation methods for cold weather and potential improvements for cold climate performance of switches.
Railway Track & Structures, Dec. 2017. pp.12-14.