All Tests Score PageRestart

Your Progress

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
  • 0 Correct
  • 0 Incorrect
  • 0 Skipped
10 mistakes allowed to pass
  • Back to all tests
  • Score Page
  • 0 Correct
  • 0 Incorrect
  • 0 Skipped
Restart
 
 
 
 
 
  • Perfect for first-time and renewal commercial applicants, and those adding endorsements
  • Based on 2024 ON commercial driver's licence manual
  • Triple-checked for accuracy
  • Updated for December 2024
What you need to know
Verified by Steven Litvintchouk, M.S., Chief Educational Researcher, Member of ACES. See our detailed commitment to accuracy and quality in our practice tests.
Preparing to drive a semi-trailer truck or a long combination vehicle in Ontario? You'll need a Class A commercial driver's licence. The transportation industry in ON is booming, so now is a great time: truck drivers are in high demand. As a Class A licenced commercial driver, you can work for a trucking company as an employee, or for yourself as an owner-operator. But in order to drive one of the largest vehicles on the road, you must first learn to drive carefully and safely. So before you can get your Class A licence, you must pass both a written and a practical test. The written test (also known as the Ontario truck driver's knowledge exam) has several multiple-choice questions. This 50-question Class A practice test is a great way to prepare as all questions are based on the official 2024 ON commercial driver's manual. As you answer the questions, we recommend checking each question's explanation to gain some further insight into the rule behind it. Good luck and drive safely!
What to expect on the official exam
50

questions

40

correct answers to pass

80

passing score

List of questions (classic view)
  1. If your truck is transporting cargo, you must check the securement of the cargo within the first ______ of the trip.
  2. Driving a commercial vehicle on the road is
  3. What does this sign mean?
  4. What does this sign mean?
  5. What does this sign mean?
  6. In large commercial vehicles, most air brake systems use automatic valves to
  7. When uncoupling your tractor from a trailer, at what point do you lower the trailer landing gear?
  8. What is the first step of the pre-trip inspection?
  9. Which of the following are normal responses from an antilock braking system (ABS)?
  10. What does this sign mean?
  11. What does this sign mean?
  12. At vehicle inspection stations, axles are inspected for
  13. What is the Gross Vehicle Weight (GVW)?
  14. Your vehicle passes the tug test of the parking brakes if
  15. What is the "cut-in" level?
  16. What does a driver need to transport dangerous goods?
  17. When is an engine retarder most efficient?
  18. In determining how well your air brake system works, which is NOT a significant factor?
  19. Which of the following is true about B-train couplings?
  20. What does this sign mean?
  21. When can your vehicle be inspected on a highway?
  22. What does an ABS system do?
  23. What does this sign mean?
  24. Which parties are responsible for ensuring the correct and compliant weight of a shipment?
  25. What is the best way to dry out your brakes after you've driven through water?
  26. What is an anti-lock braking system (ABS) designed to do?
  27. What is the maximum legal width for a commercial motor vehicle and its cargo combined?
  28. How should you behave when you reach an intersection and the road leading out is blocked with traffic?
  29. What does this sign mean?
  30. Which of these items are checked during a routine truck inspection?
  31. The Hours of Service regulations apply to buses and to commercial vehicles whose gross weight or registered gross weight exceeds
  32. When is the ideal time to check if brakes are working properly?
  33. What type of backing up is generally the safest and easiest to execute?
  34. As a driver, how can you minimize the risk of hazardous incidents?
  35. You're uncoupling a trailer from a tractor with a fifth wheel. After lowering the landing gear, what do you do next?
  36. What is an essential requirement for a licensed driver seeking instruction for a commercial motor vehicle?
  37. If another vehicle intends to overtake and pass your vehicle, what should you do?
  38. What does this sign mean?
  39. When taking a right curve on a highway with a tractor-trailer, you should
  40. In case you have to cross the center line while executing a right-hand turn, you must
  41. What should you do if you identify a minor defect during your journey?
  42. What rule must you follow when driving in a roundabout?
  43. What does this sign mean?
  44. Why is it crucial to check under the hood of your truck?
  45. If you're required to use flares or reflectors to mark a disabled commercial vehicle on a highway, where should you place them?
  46. All drivers of commercial vehicles should carry the following documents with them EXCEPT
  47. During your daily inspection, you find and record a major defect in your vehicle. What should you do next?
  48. Which of these is allowed to replace a tire on a commercial motor vehicle?
  49. What must you track when a daily log is required?
  50. What is the recommended action to take before going down a steep hill?