Manitoba Commercial Practice Test 6

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. Before leaving the curb with a bus, what should you do besides checking the side mirror?

   1. Glance over your left shoulder
   2. Open the door to look back
   3. Sound the horn twice
   4. Flash your four-way lights

2. A two-axle truck tows a trailer registered at 6,000 kg. What is the minimum Manitoba licence class?

   1. Class 5
   2. Class 2
   3. Class 3
   4. Class 4

3. Where may retreaded tires not be used?

   1. On steering axles
   2. On any school vehicle
   3. On drive axles
   4. On trailer axles

4. Which vehicle cannot be used for an MPI road test?

   1. A truck with a valid inspection sticker
   2. A truck placarded for dangerous goods
   3. A truck with three reflectors aboard
   4. A trailer registered over 4,540 kg

5. Signs allow right turns from two lanes. Which lane should a tractor-trailer use?

   1. Both lanes, straddling the line
   2. Whichever lane is empty
   3. The right-most lane
   4. The left-most lane

6. When may an emergency vehicle go through a red light on a call?

   1. Whenever its headlights are on
   2. Any time it is on duty in its own service area
   3. Only between midnight and 6 a.m.
   4. Only while using a siren and flashing red lights

7. When assembling a highway train, which trailer should be hitched to the tractor?

   1. The empty trailer
   2. The heaviest trailer
   3. The lightest trailer
   4. The longest trailer

8. What colours are gladhands usually coded?

   1. Black for both lines
   2. Yellow for supply, green for service
   3. Blue for supply, red for service
   4. Red for supply, blue for service

9. Why is hanging meat a difficult load?

   1. It has a high centre of gravity and can sway
   2. It must be delivered within one hour
   3. It must be carried with the doors open
   4. It weighs more than any other load

10. What minimum Class 5 stage must you hold to get Authorized Instruction in Class 1?

    1. Class 5L (Learner Stage)
    2. Class 5F (Full Stage)
    3. Class 5A (Authorized Instruction)
    4. Class 5I (Intermediate Stage)

11. How must alcohol be carried in a commercial vehicle in Manitoba?

    1. Anywhere, if it is part of personal luggage
    2. In the sleeper berth with the cap tightened
    3. Out of the driver's reach with the seal unbroken
    4. In the cab, as long as it is not opened

12. After meeting the written standard, who may supervise you as an air brake learner?

    1. A driver who has just passed the practical test
    2. Any driver who has held a Class 1 licence for one full year
    3. Someone with the endorsement for at least two years
    4. Any adult passenger in the cab

13. Where should a guide stand when helping you back up?

    1. On the passenger side, out of the mirror's view
    2. Beside the cab door, so you can hear the directions clearly
    3. At the rear, seeing the path and visible in your mirror
    4. In front of the vehicle, facing the driver

14. What following distance does MPI's defensive driving advice call for?

    1. At least one car length
    2. At least eight seconds
    3. At least two seconds
    4. At least four seconds

15. When uncoupling, how far should the landing gear be lowered?

    1. Halfway down, to save time later
    2. Until the trailer lifts off the fifth wheel
    3. Until it touches the ground or is under 2 cm above it
    4. Until the trailer is level with the dock

16. Turning left with a bus, when do you begin turning?

    1. As soon as the front wheels pass the stop line at the corner
    2. When the cross street's curb shows in the front left window
    3. When the rear wheels reach the crosswalk
    4. When oncoming traffic slows for you

17. You are driving in strong gusting winds. Which action does MPI advise?

    1. Speed up to get through the gusts faster
    2. Pass other vehicles to get clear of them
    3. Drive close beside other vehicles for shelter
    4. Reduce speed and grip the wheel firmly

18. When should you inspect the air compressor?

    1. With the engine at high idle
    2. While the compressor is pumping
    3. With the trailer supply valve open
    4. With the engine stopped

19. What following distance should an ambulance or van driver keep?

    1. A minimum of three seconds
    2. A minimum of four seconds
    3. A minimum of two seconds
    4. One vehicle length per 15 km/h

20. In the low air warning test, when does the vehicle fail?

    1. If the gauge reads over 100 psi
    2. If it fails to activate at or above 55 psi
    3. If the warning activates when pressure is above 60 psi
    4. If the warning sounds at 90 psi

21. When double-clutching, what do you do right after shifting into neutral?

    1. Shift directly into the next gear without releasing the clutch
    2. Turn off the engine retarder
    3. Apply the trailer hand valve
    4. Release the clutch and match engine speed

22. What happens to an unsecured load when you brake?

    1. It shifts toward the rear doors
    2. It settles more firmly in place
    3. It may shift forward
    4. Nothing, if the floor is dry

23. In an S-cam brake, what turns the camshaft?

    1. A hydraulic cylinder at the wheel
    2. The return spring pulling the shoes
    3. Pushrod stroke acting on the slack adjuster
    4. The brake drum spinning against it

24. What happens to brake force once pushrod stroke exceeds the chamber's limit?

    1. It increases as the stroke gets longer
    2. It shifts to the spring brakes
    3. It stays the same at any stroke
    4. It drops sharply and may stop entirely

25. Which fuel system condition is a major defect?

    1. A fuel gauge reading low
    2. A dripping fuel leak
    3. Dust on the fuel tank straps
    4. A missing fuel tank cap