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Ontario Class B (Bus) Commercial Licence Practice Test 3

  • 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
You're at Practice Test 3, designed to strengthen your operational knowledge of Class B buses. We're covering passenger management, an important part of the real exam, and basic vehicle maintenance—a must-know for any responsible driver. This test contains 49 questions with a pass mark of 80%. Keep in mind, in Ontario, drivers must also complete a government-approved School Bus Driver Improvement Course, and this test helps prepare you for that.
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 (you are here)
  20. Class B Licence Test 4
  21. Class B Licence Test 5
  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. Within seven consecutive days, how many hours can a driver be on duty before they are not allowed to drive?
  2. What does a red and orange sign displayed by farm machinery on the road indicate?
  3. What is a factor that may cause a vehicle to skid?
  4. What should you do when facing oncoming vehicles with bright headlights at night?
  5. After at least eight hours off-duty, a school bus driver cannot drive more than how many hours?
  6. What is a potential risk of driving in puddles?
  7. When temperatures drop below freezing, which of these is least likely to freeze first?
  8. What precaution should drivers take when driving near a roadside construction site?
  9. What kind of vehicle generally uses threshold braking?
  10. What is the safest action if dense fog drastically reduces visibility while you're driving?
  11. When are drowsy-driving collisions most likely to occur according to research?
  12. What is legally required of a driver involved in a collision?
  13. Which is not a recommended safety tip for driving in snow?
  14. It is unlawful to follow at a distance less than how many metres from emergency vehicles like fire vehicles or ambulances?
  15. What should you avoid doing when you see an approaching emergency vehicle with its lights or siren on?
  16. All of the following can help reduce the risk of skidding EXCEPT
  17. Which statement is incorrect? These factors may lead to skid
  18. By law, when should you report any collision to the police?
  19. At what speed should you test your vehicle's brakes by stopping quickly and firmly when they are wet?
  20. Which of the following isn't a method to reduce your chances of colliding with an animal on a roadway?
  21. If you encounter a large animal while driving, you should NOT
  22. In winter, what should the road's asphalt look like?
  23. Why are animal-crossing signs installed on the road?
  24. How does the anti-lock braking system (ABS) function?
  25. Does the Anti-lock Braking System (ABS) reduce the vehicle's stopping distance?
  26. What does hydroplaning refer to?
  27. During a vehicle breakdown where the speed limit is above 60 km/h, at what distance should you place flares, lamps, lanterns or reflectors in front of your vehicle?
  28. During a vehicle breakdown, at what distance should you place flares, lamps, lanterns or reflectors behind your vehicle?
  29. If there's an injured person at a collision scene but you're not trained in first aid, what should you do?
  30. If your bus breaks down on the highway, what's the best course of action?
  31. As per police, fire or ambulance, which other vehicle is considered an emergency vehicle when it's stopped with flashing lights?
  32. What should you do immediately after driving through a flooded roadway?
  33. How does the Anti-lock Braking System (ABS) function?
  34. Which of these is not an indicator that your fatigue level could put you at risk while driving?
  35. Which of these statements is incorrect? To decrease driver distractions, you should...
  36. Which of the following is not usually treated as an unusual temporary condition sign on the road?
  37. To safely load or unload passengers, the driver should be able to see the road in each direction to a minimum distance of...?
  38. Is it obligatory to share your information with a driver even when the damage caused during an accident is minimal?
  39. When exiting the bus during an emergency, what is the driver's responsibility after all passengers have left?
  40. If a yellow beacon is flashing above an intersection, what does this signify?
  41. Are school buses permitted to reverse on school grounds?
  42. The automatic transmission in your bus does not have a "Park" position. To park your bus, what position should you use instead?
  43. If you have to back up at a non-designated location, what should be done to ensure safety?
  44. How can drivers identify a school-bus loading zone?
  45. Before setting off, what must you do to ensure that no passengers are crossing in front of the school bus?
  46. Is it necessary to operate the flashing lights and stop arm within a school-bus loading zone?
  47. When stopped at a railroad crossing, what action should the driver take?
  48. Is there any circumstance in which you are permitted to make a left turn on a red light
  49. At what frequency should evacuation exercises take place?
  50. What shape are warning signs typically?