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FREE Quebec Class 1 Licence Test 2025 | QC

Based on the 2025 QC CDL manual
Questions: 25
Mistakes allowed: 5
Passing score: 80%
Ensuring the accuracy and quality of our practice tests is paramount. Learn more about our rigorous standards in our Commitment to Accuracy article.

Looking for some help to pass your Quebec Class 1 knowledge test? You’ve come to the right place! This is the first of our three Quebec Class 1 Knowledge Practice Tests. We designed them to help you pass the official Class 1 knowledge test – on your first try.

To obtain a Class 1 driver’s licence in Quebec, you must meet a series of requirements, starting with your Class 5 driving experience. You must have held a full or probationary Class 5 licence for either 24 or 36 months, depending on how much truck driving experience and training you’ve also had. For details, see the SAAQ website.

Next, you must pass a vision exam and submit a medical examination report. Once SAAQ approves the report, you must pass the Class 1 knowledge exam on the theory of operating Class 1 vehicles. Practically all Class 1 vehicles have air brakes, so this would be a good time to also pass the Air Brake knowledge test. In any event, you must pass the Air Brake knowledge test before you take the road test for the Class 1 driver’s licence. These two knowledge tests are based on the official Quebec handbooks, Driver’s Handbook and Driving a Heavy Vehicle.

Passing the general knowledge test will enable you to get a Class 1 learner’s licence, which will allow you to practice commercial driving under supervision. You must hold the learner’s licence for either one month or three months, depending on your age, your driving experience, and the amount of truck driving training you’ve had. For details, see the SAAQ website.

When you’re ready, you can schedule your two road tests for your Class 1 commercial driver’s licence. The first test is a circle check test, in which you inspect the vehicle’s mechanical components. The second test is a driving test. You must take these tests in a Class 1 vehicle equipped with air brakes.

This Quebec SAAQ Class 1 Knowledge Practice Test includes 25 multiple-choice questions on the theory of operating Class 1 vehicles. All practice questions are up to date as of May 2025 and based on the two official handbooks.

If you get stuck on a practice question, you can ask our AI Assistant to discuss the question further, give you a hint, or answer your own questions about commercial driving. If you still miss the question, you’ll be shown the correct answer and an explanation before you proceed to the next question.

4.67 out of 5 • 3 votes.
Based on 2025 QC commercial driver's license manual
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List of questions (classic view)
  1. What must you do at a stop sign with a painted stop line?
  2. Over-braking with a trailer can sometimes lead to
  3. What does this sign tell you?
  4. When is a pre-trip inspection required?
  5. What gauges should you check after starting your vehicle?
  6. Which valves make up the tractor protection system?
  7. When coupling a tractor to a semitrailer,
  8. What does this sign mean?
  9. In an air brake system, what is brake lag time?
  10. What does this sign mean?
  11. Before driving down a grade (hill), you should
  12. When inspecting the brake chambers, you should check for which of the following?
  13. The supply line is also called
  14. When brakes become overheated, they also become
  15. Which belts should you check during your pre-trip inspection?
  16. What is the purpose of the National Safety Code?
  17. What is a normal reaction time for a driver?
  18. Most manufacturers of commercial vehicles recommend draining the moisture and oil from an air brake system on a ________ basis.
  19. What is the Gross Vehicle Weight Rating (GVWR)?
  20. Which of these is not a part of a drum brake?
  21. What is the purpose of the slider on a trailer?
  22. What is the most common cause of air loss in a trailer?
  23. What is brake lag time?
  24. What does this sign mean?
  25. Why is it important to know which parts of the air brake system exhaust air?
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