CN, like many railways, uses codes or station symbols to represent locations where work is performed on rolling stock. These symbols are often painted on the car after maintenance. There are separate symbols for car manufacturers. In the 1990's, CN started using the single symbol "CN" instead of individual station symbols.

CN station symbols are listed as follows:

See page 17 Volume 6 Number 4 of CN Lines magazine for further details. The lists above are extracted from this publication.