Manitoba Commercial Practice Test 8

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. Why are bridges and overpasses especially dangerous in winter?

   1. Black ice can form on them from condensation
   2. They are salted less often than roads
   3. Snow plows are not allowed on them
   4. They are always narrower than the highway

2. What extra exercise does a Class 1 applicant complete during the road test inspection?

   1. A parallel parking test
   2. A coupling exercise
   3. A fire extinguisher demonstration
   4. A tire change

3. You leave the cab of a truck carrying dangerous goods. Where must the shipping document be?

   1. Locked in the trailer together with the goods
   2. On the seat or in the driver's door pocket
   3. In your pocket as you walk away
   4. Mailed to the consignee

4. What is the top speed of farm tractors, combines and similar equipment on the road?

   1. About 25 km/h
   2. About 80 km/h
   3. About 40 km/h
   4. About 60 km/h

5. Under Manitoba's trip inspection rules, which of these is a commercial motor vehicle?

   1. A car towing a small utility trailer
   2. A motorhome used for a family holiday
   3. A pickup used only for personal trips
   4. A school bus

6. Before backing under a trailer, how should the trailer height be set?

   1. Level with the top of the tractor tires
   2. High enough to clear the fifth wheel completely as you back
   3. So it meets the lower half of the fifth wheel's face
   4. Low enough to rest on the tractor frame

7. On a bus with loading lights and a stop arm, what fault must be reported?

   1. A stop arm painted red and white
   2. Lamps not alternating or arm not fully out
   3. The stop arm extending whenever the door is opened
   4. Lamps that are brighter than headlights

8. What kind of vehicle must be used for the Class 1 road test?

   1. One with a manual transmission
   2. Any tractor without a trailer
   3. One with no air brakes
   4. One with an automatic transmission

9. Which trucks must report to weigh stations when directed by signs?

   1. Only trucks hauling dangerous goods
   2. Only trucks with more than two axles
   3. Only trucks from other provinces
   4. Those registered at 4,500 kg GVWR or more

10. Why must brake chambers on each end of a steering axle be the same size?

    1. So the spring brakes release sooner
    2. So both chambers can share one air line to save hose
    3. So braking is balanced and steering unaffected
    4. So the slack adjusters wear faster

11. Where should your hands be on the steering wheel of a heavy vehicle?

    1. At ten and two o'clock
    2. At six o'clock with one hand
    3. At nine and three o'clock
    4. One hand palming the top

12. What does the trailer supply (emergency) line do?

    1. Carries air to fill the trailer's tanks
    2. Carries electrical power to the trailer lights
    3. Carries air only when the pedal is pressed
    4. Returns used air from the trailer

13. In Manitoba, who may re-adjust automatic slack adjusters?

    1. Any driver with an S endorsement
    2. The vehicle owner
    3. Only certified technicians
    4. Any driver with an A endorsement

14. At what pressure do safety valves normally open?

    1. 120 psi
    2. 100 psi
    3. 150 psi
    4. 200 psi

15. When should you select the gear for crossing railway tracks?

    1. While on the first rail
    2. Whenever the engine labours
    3. After crossing the first track
    4. Before you reach the tracks

16. On a long grade, the application pressure rises with each snub, from 9 to 20 to 30 psi. What does it signal?

    1. Brake fade; act at once before brakes fail
    2. That the compressor is overfilling the tanks
    3. Normal warming of the brakes on a grade
    4. A faulty gauge that can be ignored

17. Two vehicles reach an uncontrolled intersection together. Who yields?

    1. The larger vehicle always has priority over smaller ones
    2. The vehicle on the left yields to the right
    3. Whoever is going straight has priority
    4. The vehicle on the right yields to the left

18. How long can the delay in applying and releasing air brakes be?

    1. Up to about half a second
    2. Up to two full seconds
    3. Up to about five seconds
    4. Less than one hundredth of a second

19. You are driving out of an alley onto a street. Where must you first stop?

    1. Right at the edge of the roadway
    2. Partly across the sidewalk for a better view
    3. Only if pedestrians are on the sidewalk
    4. Immediately before the sidewalk area

20. A person at a scheduled stop offers the fare. When may you refuse to carry them?

    1. When they are carrying a large bag or a suitcase
    2. When all seats are full, or they are disorderly
    3. When they want to stand
    4. When the bus is running late

21. Approaching a turn with a long unit, which step does MPI recommend?

    1. Brake firmly once you are in the turn
    2. Shift up as soon as the turn begins
    3. Turn on your signal after entering the turn
    4. Pick a gear that lets you finish without shifting

22. Driver fatigue is estimated to be a factor in what share of heavy truck fatalities?

    1. More than 75 per cent
    2. 5 to 10 per cent
    3. About 15 per cent
    4. 30 to 40 per cent

23. At what supply-line pressure does the trailer supply valve close automatically?

    1. Between 20 and 45 psi
    2. Between 90 and 100 psi
    3. At exactly 120 psi
    4. Between 60 and 70 psi

24. Which rule helps prevent vehicle fires?

    1. Leave the parking brake partly applied
    2. Shut off the engine when refuelling
    3. Start propane heaters with the van doors closed
    4. Throw cigarette butts away from the load

25. You find you must press harder on the pedal to get the same braking on a long hill. What is happening?

    1. Brake fade from overheated brakes
    2. The ABS is malfunctioning
    3. The spring brakes are dragging slightly
    4. The compressor is overfilling