"CN claims that it and KCS combined would be fifth-largest among Class I railroads, out of ..." (Vantuono, 2021)
References:
Vantuono, William C. (2021, April 21). CN ‘Pre-Files’ With STB. Retrieved from Railway Age: https://www.railwayage.com/regulatory/cn-pre-files-with-stb/?RAchannel=news