Manitoba Commercial Practice Test 1

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. After stopping at the tracks, what must a school bus driver do before crossing?

   1. Open the service door, look and listen both ways
   2. Turn on the stop arm and alternating lights
   3. Ask a student to watch from the rear window
   4. Turn off the engine and wait one minute

2. A tire has been run while flat and is hot. What should you do before moving the vehicle?

   1. Drive slowly to the nearest tire shop
   2. Spray it with water from the radiator
   3. Let it cool, or replace it if you must move
   4. Inflate it to normal pressure and drive on

3. What do baffles in a tank compartment control?

   1. Forward and backward surge, not side-to-side
   2. The temperature of the liquid
   3. The pressure in the brake system
   4. Side-to-side surge only, not forward and backward

4. During a bus inspection, what must be checked about the emergency exits?

   1. They are covered to keep out the cold
   2. Only the roof hatch needs to be checked
   3. They are locked so passengers cannot open them
   4. They work, with a buzzer, from inside and out

5. When must a pilot vehicle follow an overlength vehicle?

   1. Only at night or in poor visibility
   2. When it exceeds 25 m
   3. When it is longer than 30 m
   4. When it exceeds 23 m

6. You apply the pedal and the trailer hand valve at the same time. What pressure does the trailer get?

   1. The lower of the two pressures
   2. The higher of the two pressures
   3. Only the pedal pressure
   4. The two pressures added together

7. How often must a 55-year-old Class 1 driver submit a Medical Examination Report?

   1. Every five years
   2. Every year
   3. Every three years
   4. Every two years

8. Your ABS engages during a hard stop. What should you do with the brake pedal?

   1. Keep steady pressure; do not pump it
   2. Use only the trailer hand valve
   3. Pump the pedal quickly and repeatedly
   4. Release it completely, then reapply

9. Except for pole trailers, what is the maximum length of a draw-bar in Manitoba?

   1. 5 m
   2. 1.83 m
   3. 3 m
   4. 10 m

10. When a whole wheel assembly separates, what is the usual cause?

    1. A worn brake lining
    2. A tire with low pressure
    3. A wheel bearing failure
    4. A missing mud flap

11. What does the spring brake control valve knob usually look like?

    1. Red and eight-sided
    2. Green and square
    3. Yellow and four-sided
    4. Blue and round

12. Which side should you back toward when you have a choice?

    1. Whichever side is shorter
    2. The view side
    3. The side away from the curb
    4. The blind side

13. Which bulk load may be carried without a tarpaulin if none falls off?

    1. Sand
    2. Wood chips
    3. Gravel
    4. Snow, earth or mud

14. How far apart should trucks travelling the same way on an ice road be staggered?

    1. About one kilometre
    2. About 100 m
    3. About five kilometres
    4. About 300 m

15. How long is a Medical Examination Report valid for getting Authorized Instruction?

    1. One full year from the date the report is approved by MPI
    2. Six months from the date the physician completes it
    3. Three months from the knowledge test date
    4. Five years, like the renewal period

16. Which tank should you drain first?

    1. The secondary (dry) tank
    2. The trailer tank
    3. The supply (wet) tank
    4. The primary (dry) tank

17. How long should a truck engine warm up when the temperature is below 0 °C?

    1. One to two minutes
    2. Three to five minutes
    3. At least 30 minutes
    4. Seven to 10 minutes

18. How often must a commercial vehicle in service have a trip inspection?

    1. Every 12 hours
    2. Once a week
    3. Once every 24 hours
    4. Before each load is picked up

19. What does ABS do in an emergency stop?

    1. Increases the air pressure to all wheels
    2. Applies the spring brakes automatically
    3. Prevents wheel lock so you keep steering control
    4. Shortens stopping distance on any road

20. What is required when refuelling a public passenger vehicle?

    1. Passengers seated with windows closed
    2. Engine running so passengers stay warm
    3. The nozzle held just above the opening
    4. Engine off, nozzle kept in contact and grounded

21. Why must you take care pulling away from the curb in a bus with rear overhang?

    1. The rear doors may open while turning
    2. The overhang drags on the road surface as you pull out
    3. The overhang can swing into poles or people
    4. The rear wheels may lift off the road

22. In the build-up test, how long may pressure take to rise from 85 to 100 psi at 600–900 rpm?

    1. Five minutes or less
    2. Two minutes or less
    3. Ten minutes or less
    4. 30 seconds or less

23. What is the adjustment limit for a standard type 30 clamp-type chamber?

    1. 1 3/8 in. (35 mm)
    2. 2 in. (51 mm)
    3. 2 1/2 in. (64 mm)
    4. 3 in. (76 mm)

24. What determines how much off-track a vehicle has?

    1. The air pressure in the tires
    2. The distance between front and rear wheels
    3. The height and weight of the load on the trailer
    4. The size of the engine

25. How long should the trip inspection take on a Class 2, 3 or 4 road test?

    1. As long as the examiner allows
    2. About one hour
    3. No more than five minutes
    4. No more than 20 minutes