I have a 1995 F-350 dually, door sticker says GVRW is 4500kg I'm not overloaded on axle weight but am on gross weight according to door sticker usually around 4750kg gross. My registration in Ontario ...
A couple of trips past White Rock and one past Hope with my setup were not a problem, but I was ignorant of those laws north of the US border and my rig did not have swerve, sag, roll or sway that attracted attention. Had I known the restrictions, BC would not have had our tourist dollars during that time. For the last four years, I drive a combination that is BC sticker compliant but have not returned with an RV - Irony.