Manitoba Commercial Practice Test 4

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. Which lamp failure is a major defect?

   1. One clearance lamp not working
   2. One side marker lamp burnt out
   3. Failure of both rearmost brake lamps
   4. A cracked licence plate lamp lens

2. Why should you never service or repair a spring brake chamber yourself?

   1. It voids the vehicle's registration and insurance
   2. It changes the governor settings
   3. The compressed spring can release violently
   4. It lets moisture into the tanks

3. Up to what overall width may loose hay, straw or fodder be loaded?

   1. 3.05 m
   2. 2.6 m
   3. 4.6 m
   4. 3.7 m

4. What does an alcohol evaporator do?

   1. Warms the brake chambers in winter
   2. Removes oil from the compressor air
   3. Cools the air before it reaches the tanks
   4. Adds alcohol vapour to reduce freezing of moisture

5. Passing a line of parked cars, which clue warns that one may pull out?

   1. A parking ticket on the window
   2. Exhaust coming from its tailpipe
   3. A clean windshield
   4. Its headlights being off

6. Do practice hours as a Class 1A learner count toward Class 1 MELT?

   1. Yes, up to half of the MELT hours
   2. Yes, they replace the in-cab hours
   3. Only if logged with an employer
   4. No, they do not count toward MELT

7. A vehicle does not comply with the air brake rules of The Highway Traffic Act. Who must keep it off the road?

   1. Only the vehicle owner
   2. Only Manitoba Public Insurance
   3. The driver, operator and owner
   4. Only the mechanic who last serviced it

8. Which vehicles must always carry three reflectorized warning devices?

   1. Only vehicles carrying dangerous goods
   2. Only vehicles travelling outside cities and towns at night
   3. Only trucks with more than two axles
   4. All buses and trucks of 4,500 kg or more

9. What can happen if you brake a tractor-trailer using only the trailer brakes?

   1. The unit can jackknife
   2. The trailer will stop more smoothly
   3. The ABS light will come on
   4. The air dryer will purge

10. Outside a restricted speed area, how far from the nearest rail must you stop at a railway crossing?

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

11. In the Class 1 straight line backing test, how far apart are the two lines of cones?

    1. 5 m apart
    2. 3.7 m apart
    3. 18.5 m apart
    4. 2.6 m apart

12. What is the minimum tread depth on the rear tires of a heavy truck (4,500 kg GVWR or more)?

    1. 4 mm
    2. 2 mm
    3. 1 mm
    4. 3 mm

13. How can you recognize a long-stroke brake chamber?

    1. A larger yellow knob in the cab
    2. Square ports, a trapezoid tag and markings
    3. Round air ports and no stroke tag on the clamp
    4. A blue clamp ring

14. When towing a disabled vehicle with a tow truck, what is the maximum distance between them?

    1. 10 m
    2. 5 m
    3. 2 m
    4. 15 m

15. What happens when you press the brake pedal harder?

    1. Air flows back into the supply tank
    2. The governor cuts out sooner to save air
    3. The valve opens more, sending more pressure
    4. The spring brakes start to apply

16. Your skid was caused by over-braking. What is the first thing to do?

    1. Shift into a lower gear at once
    2. Press the brake harder and hold it
    3. Release the brake so the wheels turn again
    4. Turn the wheel opposite to the skid

17. Where should you look to reduce glare from oncoming headlights?

    1. Straight into the oncoming lights
    2. Toward the right edge of the road
    3. Toward the centre line
    4. At your instrument panel

18. How do you supply air to the trailer with a push/pull trailer supply valve?

    1. Pull out the red eight-sided knob
    2. Push in the red eight-sided knob
    3. Pull out the round blue knob
    4. Push in the yellow four-sided knob

19. A passenger van seats 15 occupants including the driver and carries paying passengers. What class is needed?

    1. Class 2 or higher
    2. Class 4 or higher
    3. Class 5
    4. Class 1 only

20. Do you need an air brake endorsement in Manitoba to drive a vehicle with air-over-hydraulic brakes?

    1. No, only full air brake systems need it
    2. Only for buses with air-over-hydraulic brakes
    3. No, a Class 3 licence covers it
    4. Yes; there is no separate air-over-hydraulic test

21. How much time do you have to complete an MPI knowledge test?

    1. 45 minutes
    2. 30 minutes
    3. 20 minutes
    4. 60 minutes

22. A visually impaired passenger boards with a guide dog. What applies?

    1. Animals are never allowed on buses
    2. The dog must ride in the baggage compartment
    3. The dog may board only if muzzled
    4. The licensed animal may ride with them

23. A bus seats 30 occupants including the driver and is carrying passengers. What licence class is needed?

    1. Class 5 with a medical
    2. Class 2 or higher
    3. Class 3 or higher
    4. Class 4 or higher

24. Who is responsible for classifying a dangerous good before it is shipped?

    1. The weigh station officer
    2. The manufacturer, or the waste generator
    3. The driver who picks it up and transports it
    4. The receiving consignee

25. Besides slowing down, how can you shrink your danger zone?

    1. Keep your foot on the accelerator
    2. Turn on your hazard lights and sound the horn
    3. Cover the brake when a hazard may develop
    4. Shift into a higher gear