Truck Driver Study Module, Licensing, Classes and Getting on the Road

For the Ontario truck driver knowledge test (Classes A and D). This study material is derived from the facts in the Official MTO Truck Handbook and written in ExamCAN's own words. It is preview content pending review by a human subject-matter expert, always confirm against the current handbook on ontario.ca before relying on it. ExamCAN is not affiliated with or endorsed by the Government of Ontario or the Ministry of Transportation.

A loaded transport truck can weigh more than twenty times as much as a car. It takes far longer to stop, swings wide on turns, and has large blind spots. Ontario therefore puts heavy-vehicle driving into its own licence classes Class A and Class D, so that drivers prove they can handle the size weight and combination of these vehicles before they carry freight on public roads.

The class you need depends on two questions: how heavy is the vehicle, and are you towing a heavy trailer.

🧠 Memory hook: "A is for an articulated rig; D is for a big single truck." Class A covers the tractor-trailer combination; Class D covers the heavy straight truck.

Recall: What two facts about a vehicle decide whether you need Class A or Class D?