Final answer:
Ontario-plated commercial motor vehicles must comply with the laws of the jurisdiction in which they operate.
Step-by-step explanation:
Ontario-plated commercial motor vehicles operating in other provinces or in the United States must comply with the applicable legislation in each jurisdiction in which they operate .This means that if a commercial motor vehicle from Ontario is operating in another province or in the United States, it must follow the laws and regulations of that specific jurisdiction. For example, if an Ontario-plated commercial motor vehicle is operating in Quebec, it must comply with Quebec's legislation for commercial motor vehicles.