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  • Based on 2025 ON commercial driver's licence manual
  • Updated for January 2025

ON Class C Commercial Licence Practice Test 5

Ontario Commercial Class C Test 5 further intensifies your study regime. Featuring questions that delve into the nuanced aspects of Class C driving, this test is based on the 2025 Ontario commercial driver’s manual. It covers advanced safety protocols, legal responsibilities, and environmental considerations for Class C vehicles. Designed to mimic the real exam’s complexity, Test 5 is perfect for those seeking to deepen their expertise in Class C vehicle operation.
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  • Perfect for first-time and renewal commercial applicants, and those adding endorsements
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What you need to know
5 out of 5 • 1 votes
Verified by Steven Litvintchouk, M.S., Chief Educational Researcher, Member of ACES. See our detailed commitment to accuracy and quality in our practice tests.
What to expect on the official exam
50

questions

40

correct answers to pass

80

passing score

List of questions (classic view)
  1. Is it mandatory to keep the first aid kit replenished at all times?
  2. Which one is not qualified as a defect relating to the Emergency equipment you have in the bus?
  3. What may happen if your licence plate is not clearly visible?
  4. When a passenger seat is occupied and the seat is insecure, what type of defect is it?
  5. When would a mirror's glass surface be considered as having a major defect?
  6. When inspecting the windshield, make sure that
  7. Why is it important to maintain enough distance between you and the vehicle ahead?
  8. At what pace should the vehicle backing always be done?
  9. You're driving a school bus. Before driving away from a bus stop, what should you confirm after passengers have boarded the bus?
  10. Is it necessary to inspect the bus steps and floor?
  11. What should be done if the student safety crossing arm is not present?
  12. What is the severity of the defect when the stanchion padding is damaged?
  13. After clearing an intersection, why should mirrors be checked?
  14. Which is NOT a valid reason that you should turn off your engine when you stop for any length of time?
  15. Which is NOT a minor defect related to the stop arm of a Class B and E vehicle?
  16. At about what rpm should you practice progressive gear shifting?
  17. In normal weather conditions, for how long should you typically let your vehicle warm up?
  18. Which of the following is NOT considered a defect if found on the wiper blade?
  19. Which following location is suitable for making a lane change?
  20. Where should you slow your vehicle while exiting an expressway?
  21. Why should you not take a long time to perform a lane change?
  22. Why should you release the accelerator when going downhill?
  23. What type of defect is a damaged seat that won't stay in the required position for driving?
  24. When must transmission shifts be performed while navigating an intersection?
  25. How long should you warm up your vehicle if the temperature is below 0 degrees Celsius?
  26. When performing a lane change, you should stay within _______ of the posted speed limit.
  27. When driving a manual transmission vehicle, why should you run the engine in the highest gear range?
  28. Which of the following would NOT be a defect of a passenger seatback or the passenger-protection padding?
  29. Which of the following is NOT a benefit of properly warming up a vehicle?
  30. While the bus is stationary, where should a bus driver continue to look?
  31. A controlled railway crossing may have
  32. A light-rail transit (LRT) train may take up to ________ to stop in an emergency.
  33. A Slow-Moving Vehicle sign should be placed on any vehicle that travels no faster than
  34. A tire that is overinflated or underinflated can
  35. A tractor-trailer travelling at high speeds creates air turbulence in which of the following areas?
  36. A vehicle that is twice the weight of a car and is travelling at twice the speed of that car requires how much braking power to stop in the same distance?
  37. A white diamond marking in your lane indicates that
  38. A white X pavement marking in your lane means that
  39. What is a danger zone?
  40. Which dashboard gauge can help you decide when to upshift?
  41. Airbags are
  42. An engine governor is
  43. An octagonal (eight-sided) red sign is
  44. An oncoming vehicle at night has not dimmed its high-beam headlights. What should you do?
  45. Any defect or deficiency that you find on your bus must be
  46. At a railroad crossing, flashing red lights and ringing bells mean that
  47. At a stop sign, you must
  48. At an intersection with no traffic lights or traffic signs, you should
  49. At an intersection, the traffic light is red, but a police officer motions you to go through. What should you do?
  50. At what speed should you back up your vehicle?
  51. At which of the following engine speeds should you drive your vehicle?
  52. Before you drive your vehicle, you should
  53. Before you drive, you should
  54. Before you enter a curve, what gear should you select?
  55. Before you may turn left at an intersection, you must yield to
  56. Besides regular brake maintenance, who is responsible for ensuring that the brakes of a vehicle are working properly before the vehicle is driven?