ON Class C Commercial Licence Practice Test 6 2025

1. Cars A and B have arrived at this intersection at about the same time. Car A wants to turn left and Car B wants to go straight. Who has the right-of-way?
2. Compounding the air brakes can
3. Different-sized tires can
4. Double-clutching is
5. During a pre-hill inspection of a vehicle equipped with air brakes, you should do which of the following?
6. During freezing conditions, you should exercise extreme caution when driving through which of the following?
7. During your brake tests, you find that the brakes are not operating safely. What should you do?
8. During your pre-trip inspection, you discover a defect that does not affect the safe operation of the vehicle. What should you do?
9. Every written trip inspection report must include which of the following?
10. For large commercial vehicles, which of the following are advantages of air brakes as compared with hydraulic brakes?
11. For optimal safety, your head restraint should be positioned so that its centre is level with
12. Funeral processions have right-of-way over you…?
13. How can you downgrade from a commercial licence to a non-commercial licence?
14. How can you ensure smooth braking of a large commercial vehicle?
15. How can you tell how much air pressure is in the service reservoirs?
16. How do you ease your vehicle into a smooth stop?
17. How often should you look at your mirrors?
18. How should you drive through a large amount of water on the roadway?
19. How should you handle driving around a curve?
20. Idling for longer than five minutes can
21. If a crash occurs while you are backing up with the aid of a guide, who will be held responsible?
22. If a fire starts in your vehicle, you should do which of the following?
23. If a peace officer asks for your logbook and supporting documents, what documents should you provide?
24. If an air line ruptures between the compressor and the supply reservoir, what will prevent loss of air pressure in the service brake system?
25. If another driver wants to pass your vehicle, what should you do?
26. If someone is tailgating you, what should you do?
27. If you are going to park for longer than ________, you should turn off your engine.
28. If you are parking a bus on a downgrade, you should
29. If you are parking a single-unit (straight) vehicle on an upgrade without a curb, you should
30. If you are parking a vehicle on a downgrade, you should
31. If you are parking your vehicle on an upgrade without a curb, you should
32. If you are required to keep a logbook, what must you have in your possession?
33. If you are unable to keep up with traffic on a steep grade, what should you do?
34. If you feel tired while driving,
35. If you find a defect or deficiency in your passenger vehicle, what should you do?
36. If you find a major defect in your vehicle during your pre-trip inspection, when must it be repaired?
37. If you leave the paved portion of the roadway, which of these should you NOT do to return to the roadway?
38. If you miss your exit on a highway, you should
39. If you must adjust an automatic slack adjuster that has a hexagonal (six-sided) adjusting bolt, you should turn the adjusting bolt in which direction?
40. If you must drive more slowly than the traffic flow, you should
41. If you need to keep a daily log, what else do you need to keep with you?
42. If you reduce a tire’s air pressure when it is warm,
43. If you see this sign, it means you are
44. If you're driving a motor home, you should maintain a following distance of at least ________ behind the vehicle in front of you.
45. If you're on a 14-day cycle, what is the maximum number of hours you can drive within 14 consecutive days?
46. If your brakes get wet, what should you do?
47. If your vehicle breaks down on the freeway, you should
48. If your vehicle is carrying cargo, how often must you perform an en-route inspection of the cargo securement system?
49. If your vehicle starts to hydroplane, what should you do?
50. If your vehicle starts to pull strongly to the right, it indicates