Wikipedia:WikiProject Canada Roads/Naming

Although Naming conventions (U.S. state and territory highways) does not technically apply to Canada, it should be applied as a guideline with the following table.

Hierarchy definitions
Provinces and territories, and counties, all have different hierarchies. Most provinces take care of county roads, numbering them as secondary/collector/trunk roads. Some provinces, like Ontario and Quebec, have secret designations for highways of some significance and importance, but not enough of such to actually be signed as a provincial highway. Ontario has its 7000-series roads, and Quebec has its R-series roads (Example: R-0920 is a secret designation, with R-0927 to the east, paralleling it).

Roads which have a secret designation are probably important enough to have Wikipedia articles, although these should generally be titled by the road's common name rather than with the secret highway number. The sole exception to this is Ontario's Highway 7051, which actually features road signs bearing that number.