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Ontario Class B (Bus) Commercial Licence Practice Test 5

  • Perfect for first-time and renewal commercial applicants, and those adding endorsements
  • Based on 2024 ON commercial driver's licence manual
  • Updated for July 2024
Verified by Steven Litvintchouk, M.S., Chief Educational Researcher, Member of ACES. See our detailed commitment to accuracy and quality in our practice tests.
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ON commercial driver's licence
5 out of 5,
1 votes
What you need to know
Welcome to Practice Test 5! This test is designed to help you understand specialized driving techniques essential for Class B drivers in Ontario. Consisting of 50 questions, this test will guide you through complex maneuvers, a skill required by the Ontario Ministry of Transportation. The passing score is 80%, which mirrors the real exam. Keep in mind, you must be at least 21 years old to apply for a Class B license in Ontario.
What to expect on the official exam



correct answers to pass


passing score

More resources
  1. General Knowledge 1
  2. General Knowledge 2
  3. General Knowledge 3
  4. General Knowledge 4
  5. General Knowledge 5
  6. General Knowledge 6
  7. General Knowledge 7
  8. Road Signs
  9. Road Signs 2
  10. General Knowledge Marathon
  11. General Knowledge Exam Simulator
  12. Class A Licence Test 1
  13. Class A Licence Test 2
  14. Class A Licence Test 3
  15. Class A Licence Marathon
  16. Class A Licence Exam Simulator
  17. Class B Licence Test 1
  18. Class B Licence Test 2
  19. Class B Licence Test 3
  20. Class B Licence Test 4
  21. Class B Licence Test 5 (you are here)
  22. Class B Licence Test 6
  23. Class B Licence Test 7
  24. Class B Licence Test 8
  25. Class B Licence Test 9
  26. Class B Licence Test 10
  27. Class B Licence Test 11
  28. Class B Licence Marathon
  29. Class B Licence Exam Simulator
  30. Class C Licence Test 1
  31. Class C Licence Test 2
  32. Class C Licence Test 3
  33. Class C Licence Test 4
  34. Class C Licence Test 5
  35. Class C Licence Test 6
  36. Class C Licence Test 7
  37. Class C Licence Test 8
  38. Class C Licence Test 9
  39. Class C Licence Test 10
  40. Class C Licence Test 11
  41. Class C Licence Marathon
  42. Class C Licence Exam Simulator
  43. Class D Licence Test 1
  44. Class D Licence Test 2
  45. Class D Licence Test 3
  46. Class D Licence Marathon
  47. Class D Licence Exam Simulator
  48. Class F Licence Test 1
  49. Class F Licence Test 2
  50. Class F Licence Test 3
  51. Class F Licence Test 4
  52. Class F Licence Test 5
  53. Class F Licence Test 6
  54. Class F Licence Test 7
  55. Class F Licence Test 8
  56. Class F Licence Marathon
  57. Class F Licence Exam Simulator
  58. Air Brake Test 1
  59. Air Brake Test 2
  60. Air Brake Test 3
  61. Air Brake Test 4
  62. Air Brake Test 5
  63. Air Brake Test 6
  64. Air Brake Test 7
  65. Air Brake Test 8
  66. Air Brake Test 9
  67. Air Brake Test 10
  68. Air Brake Test 11
  69. Air Brake Test 12
  70. Air Brake Test 13
  71. Air Brake Test 14
  72. Air Brake Marathon
  73. Air Brake Exam Simulator
  74. AZ Licence Exam Simulator
List of questions (classic view)
  1. Exhaust gases entering the vehicle's cabin due to an exhaust-system leak constitutes which sort of defect?
  2. For air bags, each of these counts as a major defect EXCEPT
  3. What sort of defect is it when a tire is rubbing against another tire or vehicle component?
  4. If a window or door fails to close securely, what type of defect does this constitute?
  5. When there are visible signs warning of a possible wheel, hub, or bearing failure, what sort of defect is it considered?
  6. When the brake fluid level falls below the manufacturer's prescribed minimum level, what type of defect is it deemed?
  7. Is it considered a defect if a compartment door is either missing or insecure?
  8. What sort of defect is it when any part of the vehicle's body is either insecure or missing?
  9. What can a loss of brake fluid cause?
  10. If the required alarm for the emergency exits is not working and there are passengers present, what type of defect is this considered?
  11. How should you inspect the level of hub oil?
  12. If you suspect a tire leak but you can't feel it or hear it, does it count as a defect?
  13. A loose U-bolt in the vehicle's suspension counts as what kind of defect?
  14. In relation to a frame component, which of the following is NOT considered a major defect?
  15. If you notice an exhaust leak, what type of defect is it?
  16. What sort of defect is it when a lamp is either missing or not working?
  17. When the hydraulic brake reservoir is less than a quarter full, what type of defect is it deemed?
  18. If there is noticeable damage to the tread or sidewall of a tire, what sort of defect does it constitute?
  19. When the attachments for a needed mirror or another piece of glass are damaged, what kind of defect is it?
  20. What type of defect is it when the low air-warning either fails to operate or operates prematurely before air pressure drops below 55 psi?
  21. If an air leak is discernible in the air-suspension system, what kind of defect does it constitute?
  22. In the inspection of any wheel, rim, or part used to attach the wheel or rim, which of the following are considered major defects?
  23. What happens when any door doesn't secure appropriately when passengers are present?
  24. Which of the following is not a minor defect with regards to suspension fasteners?
  25. What type of defect is it when any spring has a single broken leaf?
  26. Is it mandatory to keep the first aid kit replenished at all times?
  27. Which one is not qualified as a defect relating to the Emergency equipment you have in the bus?
  28. What may happen if your licence plate is not clearly visible?
  29. When a passenger seat is occupied and the seat is insecure, what type of defect is it?
  30. When would a mirror's glass surface be considered as having a major defect?
  31. When inspecting the windshield, make sure that
  32. Why is it important to maintain enough distance between you and the vehicle ahead?
  33. At what pace should the vehicle backing always be done?
  34. You're driving a school bus. Before driving away from a bus stop, what should you confirm after passengers have boarded the bus?
  35. Is it necessary to inspect the bus steps and floor?
  36. What should be done if the student safety crossing arm is not present?
  37. What is the severity of the defect when the stanchion padding is damaged?
  38. After clearing an intersection, why should mirrors be checked?
  39. Which is NOT a valid reason that you should turn off your engine when you stop for any length of time?
  40. Which is NOT a minor defect related to the stop arm of a Class B and E vehicle?
  41. At about what rpm should you practice progressive gear shifting?
  42. In normal weather conditions, for how long should you typically let your vehicle warm up?
  43. Which of the following is NOT considered a defect if found on the wiper blade?
  44. Which following location is suitable for making a lane change?
  45. Where should you slow your vehicle while exiting an expressway?
  46. Why should you not take a long time to perform a lane change?
  47. Why should you release the accelerator when going downhill?
  48. What type of defect is a damaged seat that won't stay in the required position for driving?
  49. When must transmission shifts be performed while navigating an intersection?
  50. How long should you warm up your vehicle if the temperature is below 0 degrees Celsius?