Manitoba Commercial Practice Test 2

All 25 questions in this test

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

1. What brake drum temperature does MPI call the danger level?

   1. About 120 °C
   2. About 590 °C
   3. About 220 °C
   4. About 300 °C

2. How often does the law require brake adjustment to be checked on air brake vehicles?

   1. Only at the annual inspection
   2. At least once each day
   3. Once a week
   4. Once a month

3. Your load needs to be unloaded at a lakeside camp on a winter road. Where may you do it?

   1. On the ice, if another truck is not nearby
   2. Anywhere the road is wide enough
   3. Only on land, never on the ice
   4. On the ice, if the truck is turned off

4. Inside Winnipeg, how far from the nearest rail must you stop at a railway crossing?

   1. At least 30 m
   2. At least 15 m
   3. At least 5 m
   4. At least 1 m

5. How much reflective tape must a road test trailer have?

   1. At least 100% of the sides only
   2. At least 50% of the sides and 100% of the back
   3. Only on the rear doors
   4. At least 25% of the sides and half the back

6. At what gauge pressure is applied pushrod stroke measured?

   1. 90 to 100 psi, engine off, pedal fully applied
   2. 120 psi with the engine running
   3. 60 psi with the spring brakes applied
   4. 20 psi with the pedal lightly pressed

7. What is the bus driver's first consideration?

   1. Collecting every fare
   2. Passenger entertainment
   3. Safe operation of the vehicle
   4. Keeping to the published schedule

8. Can you write the Class 3 knowledge test before your Medical Examination Report is approved?

   1. Only if a doctor signs the test form
   2. Yes, but approval is needed before Authorized Instruction
   3. No, the medical must be approved first
   4. Yes, and no medical report is ever needed for a Class 3 licence

9. How far may side mirrors and clearance lights extend beyond the vehicle's width?

   1. An additional 5 cm on each side
   2. Not at all beyond 2.6 m
   3. An additional 50 cm on each side
   4. An additional 20 cm on each side

10. What does the tractor protection valve do when the trailer supply valve closes?

    1. It applies the tractor's front brakes
    2. It opens wide and dumps all of the tractor's air
    3. It switches the compressor off
    4. It closes, keeping air in the towing vehicle

11. A smaller vehicle pulls out to pass you. What should you do?

    1. Flash your headlights to warn it
    2. Speed up to keep the gap ahead
    3. Reduce speed to help it pass safely
    4. Wave it back into line behind you

12. How far ahead do low-beam headlights light the road under ideal night conditions?

    1. About 110 m
    2. About 60 m
    3. About 30 m
    4. About 150 m

13. May engine retarders be used during an MPI road test?

    1. Yes, but only in cities
    2. Yes, they are required on hills
    3. No, they are not allowed on road tests
    4. Only for the Class 1 road test

14. Backing a tractor-trailer with your hand at the bottom of the wheel, which way do you move it?

    1. Opposite to where the trailer should go
    2. In the direction you want the trailer to go
    3. Straight up toward twelve o'clock
    4. Back and forth quickly to start

15. How are spring brakes applied and released?

    1. Applied by air pressure, released by a strong spring
    2. Applied by the foot pedal only
    3. Applied by hydraulic fluid, released by air
    4. Applied as air leaves, released as air builds

16. If both the weight and the speed of your truck double, how much braking force is needed to stop in the same distance?

    1. Eight times as much
    2. Sixteen times as much
    3. Four times as much
    4. Twice as much

17. Where should you drive on a winter ice road?

    1. Wherever the ice looks smoothest
    2. Close to the centre, away from the snow banks
    3. Close to the snow banks for better grip
    4. On the right edge to leave room for others

18. On a truck with a GVWR of 4,500 kg or more, what is the minimum tread depth on the front steering tires?

    1. 5 mm
    2. 2 mm
    3. 3 mm
    4. 1.6 mm

19. What is the most common type of foundation brake on commercial vehicles with air brakes?

    1. The wedge brake
    2. The S-cam drum brake
    3. The disc brake
    4. The band brake

20. What is one problem caused by moisture and oil collecting in air tanks?

    1. Sludge that damages seals and makes valves stick
    2. Better lubrication of the brake chambers
    3. Quieter operation of the compressor
    4. Faster air build-up and higher pressure

21. How far from the nearest track must a Manitoba school bus stop at a railway crossing?

    1. Between 5 m and 15 m
    2. Between 1 m and 3 m
    3. Between 15 m and 30 m
    4. Exactly 10 m

22. Until when must a child ride in a size-appropriate car seat in Manitoba?

    1. Until at least 145 cm, 36 kg or nine years old
    2. Until the child can reach the floor
    3. Until at least 18 kg or four years old
    4. Until at least 120 cm or six years old

23. Who is responsible if something goes wrong while backing a large vehicle?

    1. The guide directing the driver
    2. The owner of the property
    3. The driver, always
    4. Whoever is behind the vehicle

24. What does a round blue knob in some tractors control?

    1. Releasing tractor spring brakes only, trailer's stay on
    2. Applying the trailer service brakes
    3. Draining all tanks at once
    4. Supplying air to fill the trailer tanks before coupling

25. Why must livestock haulers take curves with care?

    1. Shifting animals can change the centre of gravity
    2. Livestock trailers have no suspension
    3. Curves are banned for livestock trucks
    4. Animals need to be turned to face forward