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

FREE Ontario Class B (Bus) Commercial Licence Practice Test 1

Bus drivers are entrusted to safely transport passengers to their destinations. This trust is based on the skills they have acquired through extensive training. If you want to drive a school bus, you’ll need to meet several requirements, including passing the Class B Commercial Licence Knowledge Test to obtain a commercial learner’s licence. The official knowledge test is an opportunity to demonstrate you know how to keep passengers safe. However, you should make sure you are ready for the challenges of the official knowledge test before asking Attridge for the keys to one of their buses.

Our Ontario Class B Licence Practice Test 1 will prepare you to answer questions on passenger safety regulations typically seen on the official knowledge test. The practice test includes 50 multiple-choice questions to test your driving skills. You will get an accurate evaluation of your skill level that points out areas for improvement. Using the practice test, you’ll be able to more efficiently budget your study time to concentrate on the topics you don’t completely understand. Whether it’s emergency procedures, medical reporting, or any other topic you need to study, the practice test will rapidly increase your knowledge base. You will become more confident in your skills and more likely to pass the official knowledge test on your first try.

Compared with other on-line resources, this Ontario Class B Written Practice Test 1 offers the most comprehensive instruction on keeping passengers safe. It is based on the most recent Ontario Official Ministry of Transportation (MTO) Bus Handbook. The practice test goes the extra mile to provide you with an optimal learning experience to support your knowledge base. Other on-line resources, such as study guides, limit your training to memorizing the answers to the questions. If you want to meet the requirement of correctly answering 80% of the official knowledge test questions, a little extra preparation would be helpful. The practice test is interactive and keeps you focused and engaged using randomly selected questions. If you submit an incorrect answer, the practice test will provide a detailed explanation of the correct one. You will gain insight into the logic that supports the answer and apply it to your driving skills. The practice test will equip you with the skills and confidence to safely transport passengers and find greater job satisfaction.

The Bon Soo Winter Carnival isn’t limited to a single day of fun, and you can find multiple practice tests to develop more driving skills at https://tests.ca/ontario/.
ON driver's license
  • Perfect for first-time and renewal commercial applicants, and those adding endorsements
  • Triple-checked for accuracy

What you need to know

Verified by Steven Litvintchouk, M.S., Chief Educational Researcher, Member of ACES. See our detailed commitment to accuracy and quality in our practice tests.
Ensuring the accuracy and quality of our program is paramount. Learn more about our rigorous standards in our Commitment to Accuracy article.
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List of questions (classic view)
  1. A bus driver should choose a safe driving speed, primarily based on
  2. The air pressure of a spare tire should equal
  3. When should the bus driver perform a safety check of the bus?
  4. You're approaching an intersection, and you notice that the roadway beyond the intersection is blocked with traffic. What should you do?
  5. When travelling slower than the other traffic, you should
  6. If you're approaching a level railway crossing that is not protected by gates or railway crossing signals, what should you do?
  7. A vehicle being used for the removal of snow from a roadway must be equipped with a
  8. What is the main purpose of maintaining the correct air pressure in the tires?
  9. Under Ontario law, when a school bus stops with its red signals flashing, other drivers must
  10. A broken centre line on a roadway means that you may
  11. Which of the following equipment items is NOT required on a school bus?
  12. If a front tire blows out, what should you do first?
  13. If your right wheels drop off the roadway, what should you do to get back onto the roadway?
  14. Generally the safest drivers are those who
  15. If a bus becomes disabled on a roadway at night, flares or reflectors must be placed approximately _________ in front of and behind the vehicle.
  16. When driving in fog, you should use
  17. You're driving on a two-way street when you hear the siren of an approaching emergency vehicle. Under Ontario law, what must you do?
  18. What is the most important concern for a bus driver?
  19. If your vehicle lacks antilock brakes (ABS), how can you stop quickly on a wet or icy roadway?
  20. When travelling at over 60 km/h (40 mph), a bus driver must maintain a following distance of at least _________ behind the vehicle ahead, except when passing.
  21. Until which age can a driver submit a medical report every five years?
  22. How should the air pressure in your spare tire compare to the rest of the tires on your vehicle?
  23. When you start a vehicle with a standard transmission, press the clutch pedal. The clutch should engage without
  24. Can medical professionals be legally obligated to report your health issues that could impact your driving abilities?
  25. How soon after installation should wheel fasteners be inspected, according to manufacturers' recommendations?
  26. How frequently must drivers between the age of 46 and 64 submit a medical report?
  27. Who bears the responsibility for ensuring the operational safety of a commercial motor vehicle?
  28. Where is the decal placed if a bus passes an inspection?
  29. What action should a driver take if a minor defect is discovered on the vehicle?
  30. Drivers aged 65 and older must submit a medical report every how many years?
  31. Can your licence be denied if your physical or medical condition fails to meet the standards defined by the Highway Traffic Act regulations?
  32. When applying for a licence to drive a bus, do you need to submit a filled out ministry medical certificate?
  33. What should you expect when checking your brakes?
  34. Can a driver operate a vehicle with a major defect?
  35. Why is it important for a driver to regularly check all vehicle systems throughout the day for defects?
  36. Which of the following vehicles doesn't use schedule 2 for inspections?
  37. Which of the following statements is false in relation to broken springs, ruptured air bags and faulty shock absorbers?
  38. Do police officers or appointed ministry officers have the right to perform a safety inspection on your vehicle at any time and location?
  39. A driver is not permitted to drive a bus, motor coach, school bus, or a school-purposes vehicle unless someone has conducted an inspection of the vehicle and completed an inspection report within the previous
  40. What is another term used to describe the free play in the steering system?
  41. Which of these class of licenses allows you to drive a school-purpose bus?
  42. How can you determine if the parking brake is functioning correctly during daily road checks?
  43. A Class C licence will allow you to drive any bus (other than a school-purposes bus) that seats more than
  44. Which class of licence is required to drive an ambulance or a bus with seating for up to 24 passengers, not including a school-purposes bus?
  45. What licence class must you hold to drive any school-purpose bus with seating for more than 24 passengers?
  46. What is not an essential aspect to check during a fuel system inspection?
  47. A school bus driver improvement course certificate is valid for
  48. Where should the guide ideally position himself when you are backing your vehicle?
  49. Before starting to back your vehicle, you should do which of the following?
  50. When making a left turn, which method should you use to avoid striking a vehicle or a sign post on an island?
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