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  • Based on 2025 BC commercial driver's licence manual
  • Updated for April 2025
In British Columbia, a Class 4 licence provides a wide range of opportunities. You can drive taxis, small buses (up to 24 passengers), and ambulances. To apply, you must be 19 or older and hold a valid class 5 licence. A medical exam is also required, and a criminal record check is conducted for some vehicles. Your Class 4 licence is issued after passing a multiple-choice knowledge exam and a road test. If you are anxious about this process, we’ll help you build the confidence and knowledge to obtain a passing score.

To assist students in their learning phase, the Insurance Corporation of British Columbia (ICBC) publishes the official British Columbia guide for driving commercial vehicles. You should read its contents at least once to learn the various aspects of commercial driving theory. However, there are other tools that are more efficient by enabling active learning. To pass the official exam on your first attempt, we recommend adopting a systematic approach and developing a study routine you can follow consistently.

Our ICBC Class 4 knowledge practice test can significantly boost your learning potential. Each of its 50 questions has multiple answer choices, but only one is correct. This intuitive tool has been designed to closely reflect the content and format of the official exam, giving you valuable insight into the testing experience. Too many students make avoidable mistakes at the ICBC office by rushing. Since we have omitted any timer from this intuitive tool, we recommend you read every question twice before selecting an answer. If you make a mistake, our system automatically provides a detailed explanation of the correct answer. Please note this feedback down in a notebook or notebook app to make it easier to remember later.

With this practice test, you’re not just studying to obtain a passing score; you’re building the foundation of your dream career and developing a lifelong skill. Start today and take the first step towards becoming a safe and responsible driver. With the right tools, even the most complex aspects of commercial driving theory are easier to understand.
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  • Perfect for first-time and renewal commercial applicants, and those adding endorsements
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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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What to expect on the official exam
50

questions

40

correct answers to pass

80

passing score

List of questions (classic view)
  1. Under British Columbia law, what is the definition of "public transportation"?
  2. Under British Columbia law, what is the definition of a "bus"?
  3. Under British Columbia law, a special activity bus
  4. Under British Columbia law, what is the definition of a "special vehicle"?
  5. Under British Columbia law, what is the definition of a "taxi"?
  6. A Class 4 driver's licence allows you to drive
  7. A controlled railway crossing may have
  8. An engine governor is
  9. Which of the following are true about a humpback railway crossing?
  10. You can prevent passenger injuries by
  11. Different-sized tires can
  12. A Class 1 driver's licence allows you to drive which of the following?
  13. A Slow-Moving Vehicle sign should be placed on any vehicle that travels no faster than
  14. Under hours of service regulations, which of the following are NOT considered a sleeper berth?
  15. 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?
  16. Why should you adjust your head restraint so its top is at least level with the top of your head?
  17. After working 120 hours in a 14-day cycle, drivers must take ____ consecutive hours of off-duty time before taking 70 hours of on-duty time.
  18. Airbags are
  19. When can flashing amber lights be mounted on a vehicle?
  20. Before you enter a curve, what gear should you select?
  21. What is the purpose of an antilock braking system (ABS)?
  22. Under British Columbia law, what are ambulances legitimately used for?
  23. If you find a defect or deficiency in your passenger vehicle, what should you do?
  24. The Motor Vehicle Act gives public transit buses the right-of-way. What does this mean?
  25. Drivers on Cycle 1 must not drive after completing ____ hours of on-duty time in seven consecutive days.
  26. Drivers on Cycle 2 must not drive after completing ____ hours of on-duty time in 14 consecutive days.
  27. Which of the following drivers are exempt from wearing seatbelts?
  28. During a pre-hill inspection of a vehicle equipped with hydraulic brakes, you should do which of the following?
  29. Every motor vehicle must be equipped with at least ______ separate braking systems.
  30. How are flares, fusees, and reflectors used?
  31. According to the British Columbia Driving Commercial Vehicles Manual, what is horsepower?
  32. How can you downgrade from a commercial licence to a non-commercial licence?
  33. Idling for longer than five minutes can
  34. If you are convicted of causing a crash while you were driving impaired by alcohol or drugs, you may face which of the following consequences?
  35. Each new school bus must be equipped with
  36. A convex mirror
  37. While the bus is moving, it is the driver's responsibility to make sure all passengers are
  38. You are emotionally drained from an argument you had at home. You should
  39. The floor of your school bus must be washed with a disinfectant solution at least
  40. When a passenger has a pet or service animal, you should
  41. A broken centre line on a roadway means that you may
  42. A bus driver should choose a safe driving speed, primarily based on
  43. A light-rail transit (LRT) train may take up to ________ to stop in an emergency.
  44. A white diamond marking in your lane indicates that
  45. A white X pavement marking in your lane means that
  46. Which dashboard gauge can help you decide when to upshift?
  47. An octagonal (eight-sided) red sign is
  48. An oncoming vehicle at night has not dimmed its high-beam headlights. What should you do?
  49. Any defect or deficiency that you find on your bus must be
  50. At a railroad crossing, flashing red lights and ringing bells mean that
  51. What should taxi cab and limousine drivers do immediately after refusing service to someone?
  52. Where is the most appropriate place to position a booster seat for a child in a vehicle?
  53. What is important about seat belts?
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