BC Class 1–4 Practice Test 3

All 30 questions in this test

Every question and its answer choices. The correct answers and explanations appear when you take the test above.

1. Why must you slow down on curves with a liquid tank load that has no baffles?

   1. The tank may leak at the valves
   2. Baffles are required only on hills
   3. The pump may overheat
   4. The liquid surges and can tip the vehicle

2. Your reservoirs hold 80 p.s.i. What is the most application pressure you can get?

   1. 80 p.s.i.
   2. 160 p.s.i.
   3. 100 p.s.i.
   4. 120 p.s.i.

3. In a curve to the right, where should you keep the front wheels?

   1. Close to the centre line
   2. In the middle of the lane
   3. On the right shoulder
   4. Close to the right edge

4. How much of the daily 10 off-duty hours may be deferred to the next day?

   1. Up to eight hours
   2. Up to two hours
   3. Up to four hours
   4. None at all

5. After loading cargo, within what distance must you re-inspect its securement?

   1. Within 80 km
   2. Within 10 km
   3. At the end of the day
   4. Within 240 km

6. Who needs a passenger transportation licence?

   1. Whoever runs a vehicle carrying passengers for hire
   2. Any driver with a Class 4 licence
   3. Only drivers of buses with more than 25 seats
   4. Only taxi companies with 10+ cars

7. What is a special vehicle under the B.C. licence classes?

   1. A bus used for school field trips
   2. A truck with a mounted crane
   3. One seating 10 or fewer, built for people with disabilities
   4. Any vehicle that is fitted with flashing amber lights

8. When may a bus driver collect fares or make change?

   1. Whenever passengers ask
   2. Only when the bus is stopped
   3. At low speed in town
   4. On straight stretches of highway

9. Before the Class 1 leakage test, what minimum air pressure is needed?

   1. At least 60 p.s.i.
   2. At least 80 p.s.i.
   3. At least 100 p.s.i.
   4. At least 120 p.s.i.

10. Who usually issues a municipal chauffeur's permit for taxi drivers?

    1. WorkSafeBC
    2. The taxi company
    3. ICBC
    4. The municipal police

11. A peace officer finds your school bus unfit. When may it be used as a school bus again?

    1. After 24 hours
    2. Once it has been fixed
    3. The next school day
    4. After the current route ends

12. When is a trip inspection report needed for a trailer you pick up?

    1. Only for trailers over 10 years old
    2. Only when hauling dangerous goods
    3. Once a week per trailer
    4. For every new trailer each day

13. At what system pressure may spring brakes apply fully on their own?

    1. Between 60 and 80 p.s.i.
    2. Only at zero p.s.i.
    3. Between 90 and 100 p.s.i.
    4. Between 20 and 45 p.s.i.

14. How many tiedowns secure a vehicle over 4,500 kg carried as cargo?

    1. At least six, any rating
    2. Two, one at the front and one at the rear
    3. Four, each rated at least 2,268 kg
    4. One chain over the frame

15. How long is a vehicle impoundment for a first excessive-speeding offence?

    1. 24 hours
    2. 30 days
    3. Seven days
    4. 90 days

16. Which parking brake cannot be compounded?

    1. An s-cam drum brake
    2. A safety actuator
    3. A wedge brake
    4. A spring parking brake

17. The primary section of a dual system fails. Which brakes still apply?

    1. Only the drive axle brakes
    2. Only the steering axle brakes
    3. All brakes normally
    4. No brakes at all

18. You fail the single-unit air brake knowledge test three times. What must you do next?

    1. Take MELT before retesting
    2. Take an approved 7-hour air brake course
    3. Wait one full year before trying the test again
    4. Pass the Class 3 road test first

19. Cut-out is set at 125 p.s.i. At about what pressure should the governor cut in?

    1. About 85 p.s.i.
    2. About 60 p.s.i.
    3. About 105 p.s.i.
    4. About 115 p.s.i.

20. Driving at 105 km/h instead of 90 km/h uses about how much more fuel?

    1. The same amount
    2. About 20 per cent more
    3. About 50 per cent more
    4. About 5 per cent more

21. What does a Class 4.3 placard mean?

    1. Radioactive material
    2. Flammable liquid
    3. Toxic gas
    4. Dangerous when wet

22. What is the trailer hand valve meant for?

    1. Emergency stops at highway speed
    2. Applying only the trailer brakes, such as when coupling
    3. Normal braking in traffic
    4. Parking the trailer overnight on a slight grade

23. Between what pressures must the governor stop the compressor pumping?

    1. 90 and 100 p.s.i.
    2. 60 and 80 p.s.i.
    3. 135 and 150 p.s.i.
    4. 105 and 135 p.s.i.

24. When uncoupling, why back gently against the trailer before setting the tractor brakes?

    1. To drain the air tanks
    2. To test the trailer's spring brakes
    3. To ease pressure on the locking jaws
    4. To raise the landing gear

25. What is the most common air brake defect found in commercial vehicle inspections?

    1. Frozen air dryers
    2. Leaking glad hand seals
    3. Brakes out of adjustment
    4. Low compressor oil

26. In many dual systems, which brakes does the primary section work?

    1. The drive (rear) axle brakes
    2. The spring parking brakes
    3. The steering axle brakes
    4. The trailer brakes only

27. What does the tractor protection system do in a trailer breakaway?

    1. Shuts off air loss so the tractor can stop
    2. Opens the safety valve
    3. Applies the steering axle brakes only
    4. Releases all tractor brakes

28. When is an overload permit issued?

    1. Whenever the shipper asks
    2. For any load under 4.4 m wide
    3. Only on weekends
    4. Only when the load cannot be reduced

29. While adjusting a manual slack adjuster, the pushrod starts coming out of the chamber. What does that mean?

    1. You are turning the bolt the wrong way
    2. The brake is correctly adjusted
    3. The chamber diaphragm has failed
    4. You should keep turning harder

30. Your trailer starts to whip and then settles down. What should you do?

    1. Speed up to straighten it
    2. Brake hard with the trailer valve
    3. Keep driving, because the swerving has stopped
    4. Stop when safe and check vehicle and load