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Ontario Class B (Bus) Commercial Licence Practice Test 4 2024 | ON

5 out of 5 • 1 votes.
Based on 2024 ON commercial driver's license manual Instant feedback
Welcome to Practice Test 4, a critical step in your journey to obtaining a Class B license in Ontario. This test consists of 50 questions aimed at preparing you for emergency situations, like brake failure. Did you know that Class B license holders in Ontario are not allowed to operate vehicles with air brakes unless specifically permitted? So, understanding alternative safety measures is crucial. Aim for a passing score of 80% or above.
Ensuring the accuracy and quality of our practice tests is paramount. Learn more about our rigorous standards in our Commitment to Accuracy article.

Perfect for:

  • First-time ON commercial license applicants
  • Existing commercial license holders adding endorsements
  • ON commercial license renewal applicants

More FREE ON Commercial Driving 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 (you are here)
  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 Marathon
  56. Class F Licence Exam Simulator
  57. Air Brake Test 1
  58. Air Brake Test 2
  59. Air Brake Test 3
  60. Air Brake Test 4
  61. Air Brake Test 5
  62. Air Brake Test 6
  63. Air Brake Test 7
  64. Air Brake Test 8
  65. Air Brake Test 9
  66. Air Brake Test 10
  67. Air Brake Test 11
  68. Air Brake Test 12
  69. Air Brake Test 13
  70. Air Brake Test 14
  71. Air Brake Marathon
  72. Air Brake Exam Simulator
  73. AZ Licence Exam Simulator

List of questions (classic view)

  1. Are buses and school buses required by law to carry an appropriate fire extinguisher?
  2. When a traffic light turns yellow, what is the driver advised to do?
  3. Where should you arrange your practice evacuation drills?
  4. What is commonly known as a traffic beacon?
  5. What does a flashing red beacon above an intersection signify?
  6. What does a broken yellow line indicate on the road?
  7. When faced with a flashing yellow traffic signal, what should a driver do?
  8. Whose duty is it to ensure the safety of passengers traveling on a bus?
  9. Who is responsible for setting up regular evacuation drills?
  10. What is the final step when loading passengers onto a bus?
  11. Which of the following are not considered standard emergency exits?
  12. In case of a power outage where traffic lights are not working at intersections, what action should you take?
  13. When you face a flashing green light or a left-pointing green arrow with a green light at an intersection, what color is the traffic light for oncoming traffic?
  14. If a fire extinguisher is missing from the bus while passengers are on board, what type of defect is it considered?
  15. What is not a required step after a minor traffic collision with no injuries involved?
  16. When the brake pushrod stroke exceeds the set limit, this is classified as what type of defect?
  17. The maximum amount of demerit points a holder of a Class B or E licence can possess would be...?
  18. How long do demerit points remain on your driving record?
  19. Which of the following circumstances would not require the police to test for impairment from alcohol and drugs?
  20. Which of the following should be considered when planning routes and schedules for school buses?
  21. How many mistakes are permitted during the daily inspection test?
  22. Are demerit points added or subtracted from a driver's report?
  23. During your inspection test, what do you do if your bus doesn't allow you access to measure pushrod stroke?
  24. During testing for audible air leaks, what type of defect does it indicate if one is detected?
  25. If a Class B or E licence holder exceeds eight demerit points, what happens?
  26. To test the air pressure build-up rate, you should reduce air pressure to
  27. If you hold ________, you must submit medical reports regularlly.
  28. How many errors are allowed during the on-road test for a Class B/E or C/F licence?
  29. If the air pressure takes more time than the set limit to build up during a test, what type of defect is it classified as?
  30. Why is it advised to pick up and drop off passengers on the home side of the road?
  31. During the backing skills test for a Class B/E and C/F licence, how much time is given to complete the test?
  32. What are the consequences if you refuse, fail or are unable to provide a breath sample or perform a physical coordination test?
  33. Can you use the pertinent Schedule as reference during the daily inspection test for Class B/E and C/F tests?
  34. When testing the slow air pressure build-up rate on an air brake equipped bus, how long is the maximum time it should take to build the air pressure to the correct level?
  35. When planning route layouts for school buses, a school bus driver should help make recommendations to all of the following EXCEPT
  36. What is not assessed during the on-road test for Class B/E or C/F licensing?
  37. If you are downgraded to a lower licence class due to eight or more demerit points, how long will you stay in the lower licence class?
  38. The inspection test for Class B/E or C/F road tests covers all of the following EXCEPT
  39. How many randomly selected items will you be asked to locate and inspect during the exterior inspection for Class B/E and C/F tests?
  40. Are school buses subject to surprise safety inspections by Ministry of Transportation staff throughout the year?
  41. A bus driver who has been found impaired by alcohol or drugs may face which of these penalties?
  42. If your driver's licence has been suspended, cancelled or expired for more than three years, what is the proper course of action?
  43. Is it possible to be charged for impaired driving even if you haven't started the car?
  44. If the air pressure in a vehicle drops by 3 psi within what time frame, is this considered a major defect?
  45. The law requires regular inspection of the following vehicles operated by or under contract to a school board, EXCEPT
  46. The minimum acceptable tread depth for the steering tires is
  47. Which of these suspension-related defects is considered a major defect?
  48. A lamp that's the wrong colour counts as
  49. What is the minimum tread depth acceptable for tires that are not used for steering?
  50. Is a "main spring leaf" a real component of the suspension system?