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New Brunswick Class 4 Licence Test 6

  • Perfect for first-time and renewal commercial applicants, and those adding endorsements
  • Based on 2024 NB commercial driver's licence manual
  • Updated for June 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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NB commercial driver's licence
5 out of 5,
1 votes

About this test

Unlock the door to your vehicle-for-hire career in New Brunswick with our June 2024 Class 4 Licence practice test. The 50 questions included are geared towards those with a Class 5 licence and who have passed the Graduated License Program, setting you up to excel in the service industry. From medical standards to the vision test, our practice test is a thorough preparation tool for your success.

List of questions (classic view)

  1. When approaching a narrow bridge from a curve, you should
  2. When approaching an intersection at which you intend to turn, you should
  3. What should you do to prevent a vehicle fire?
  4. When adjusting a manual slack adjuster, how can you tell whether you are turning the adjusting bolt in the correct direction?
  5. When are water-cooled brakes used?
  6. When backing up a large vehicle, you should
  7. When braking, just before you come to a stop, you should
  8. When can a vehicle with just one occupant (the driver) use this lane?
  9. When can you drive side by side with a motorcycle in one lane?
  10. When driving behind a large commercial vehicle, you must make sure that you can see
  11. When driving in fog, you should use
  12. When driving in heavy fog, you should use
  13. When driving in the United States, you may drive no more than ____ hours during your on-duty time.
  14. When driving in the Yukon or Northwest Territories, you can be on duty for no more than ____ hours at a time.
  15. When can you refuse to transport a passenger?
  16. When driving at night, you should do which of the following?
  17. When driving in the Yukon or Northwest Territories, you may drive no more than ____ hours during your on-duty time.
  18. When driving, the holder of a Class 5–GDL (Probationary) licence must not have a blood alcohol concentration greater than
  19. When fuelling a vehicle, you should NOT
  20. When is it especially important to look out for wild animals on the road?
  21. When must you yield the right-of-way to an emergency vehicle that is sounding a siren?
  22. When parking a vehicle with a manual transmission facing uphill, you should always leave the parking brake on and the transmission in
  23. When passing parked cars in a bus, what should you do?
  24. When pulling away from the curb in a bus, you should
  25. When pulling out from an alley, you must
  26. When refuelling a school bus, you must
  27. When refuelling your vehicle, you should
  28. When should the bus driver perform a safety check of the bus?
  29. When should you check the tire pressures?
  30. When transporting persons with disabilities, you should do all of the following EXCEPT
  31. When traveling down a steep hill, you should NOT
  32. When travelling downhill, what can you do to prevent your brakes from overheating?
  33. When travelling slower than the other traffic, you should
  34. When turning left from one two-way street onto another, where should you begin your turn?
  35. When using the applied stroke method to check pushrod stroke, how much pressure should you apply to the service brakes?
  36. When you are following a motorcycle, allow extra space between your vehicle and the motorcycle because
  37. When you are preparing to make a right turn from the right lane, you should shoulder check to the right to make sure
  38. When you encounter a flashing yellow signal at an intersection, what should you do?
  39. When you press down on the clutch in a vehicle with manual transmission, what does it do?
  40. When you see a potential hazard in your danger zone, you should
  41. When you're driving in an urban area, you should scan ahead about
  42. Where are a large vehicle's blind spots?
  43. Where would an air dryer be installed in an air brake system?
  44. Which of the following are advantages of a dual air brake system?
  45. Which of the following are true about a humpback railway crossing?
  46. Which of the following are true about brake fade?
  47. Which of the following can impair your ability to safely operate a vehicle?
  48. Which of the following can impair your driving?
  49. Which of the following can increase the danger of crossing railway tracks?
  50. Which of the following factors determine the sharpness of your large vehicle’s turn?