Truck licence classes

By the end of this topic you can

• You can tell which licence class covers a straight truck and which covers a tractor-trailer.
• You can match the numbered classes used in western provinces to Ontario's lettered classes.
• You can explain why the 4,600 kg towed-weight figure matters.
• You can list the usual steps to upgrade to a commercial truck class.
• You can explain why an air brake endorsement is often needed as well.

What you need to know and understand

• In BC, Alberta, Saskatchewan and several other provinces, Class 1 covers semi-trailer combinations and Class 3 covers trucks with more than two axles.
• In Ontario, Class A covers tractor-trailer combinations and Class D covers trucks over 11,000 kg gross weight.
• A truck class licence normally lets you tow only a unit of 4,600 kg or less; heavier towed units need the top class (Class 1 or Class A).
• Commercial classes generally need you to be at least 18, and Saskatchewan also says you must not be a novice driver.
• Commercial applicants usually need a medical report, a vision test, a knowledge test and a road test that includes a vehicle inspection.
• A truck class does not by itself let you drive with air brakes; you need a separate air brake endorsement (Z in Ontario, Q in Alberta).
• In Quebec, Class 1 is for heavy vehicle combinations and Class 3 is for trucks, with an F endorsement for air brakes.

Numbers in the west, letters in Ontario

Most provinces follow a numbered system. Class 1 is the top class for semi-trailers and other combinations. Class 3 is for single trucks with more than two axles, such as dump trucks, that tow no more than 4,600 kg. Class 5 is the ordinary car class.

Ontario uses letters. Class D covers a motor vehicle over 11,000 kg gross or registered gross weight, towing no more than 4,600 kg. Class A covers any tractor-trailer combination. Ontario also has a restricted Class A (condition R) for smaller combinations, which does not allow air-braked trailers, full-size tractor-trailers or double trailers.

• Semi-trailer or heavy combination: Class 1 (most provinces, including Quebec) or Class A (Ontario)
• Heavy straight truck: Class 3 (most provinces and Quebec) or Class D (Ontario)
• Car, van or light truck: Class 5 (most provinces) or Class G (Ontario)

Typical upgrade route

1. Hold a full car licence, not a learner or novice stage, and meet the minimum age (18 in Ontario and Saskatchewan).
2. Pass a commercial medical exam and a vision test.
3. Pass the knowledge test for the truck class, and the air brake course and tests if the truck has air brakes.
4. For Class 1 or Class A, complete the mandatory entry-level training your province requires.
5. Pass a road test that includes a pre-trip or daily vehicle inspection.

Rules that are changing

Ontario requires Class A road tests to be taken in a truck with a manual transmission of at least eight forward gears with a high-low range, or a restriction is added. Ontario has also announced that from January 1, 2027, Class A road test candidates must have held a Class G or higher licence for at least six months.

Always check your own province's licensing office before you book training, because requirements are reviewed often.

Common mistakes

• Assuming a Class 3 or Class D lets you pull any trailer. Above 4,600 kg towed weight you need Class 1 or Class A.
• Forgetting the air brake endorsement. Most heavy trucks have air brakes, so plan for the course and tests too.
• Quoting another province's class names. Check whether your province uses numbers or letters.
• Booking a road test before finishing the required entry-level training.

Test yourself: Truck licence classes

Answer each question, then read the explanation. Questions come in a random order each time.

Go deeper

• Canadian driving licence glossary
• Driver’s Licence Classes in Ontario and Across Canada
• How to Get a Driver’s Licence in the NWT