Manitoba Commercial Practice Test 5

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. How should a trailer's payload be distributed?

   1. Equally between its rear tires and the fifth wheel
   2. Mostly on the fifth wheel, about 90 per cent of it
   3. All forward, against the headboard
   4. Mostly at the rear, behind the axles

2. Your ABS warning light shows a malfunction. What braking do you still have?

   1. Regular brake function
   2. Only the trailer hand valve
   3. Only the spring brakes
   4. No brakes until repaired

3. In Manitoba, which licence class is needed to drive a semi-trailer truck?

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

4. What should you check about a bus's service door control?

   1. That the door and any brake interlock work
   2. That it is disconnected in winter
   3. That it stays open while driving
   4. That it only opens from outside the bus

5. A defect develops mid-trip that makes it unsafe to continue. What should the bus driver do?

   1. Finish the route as planned and report it afterward
   2. Drive slower and keep the passengers aboard
   3. Stop, and not carry on with passengers until fixed
   4. Ask the passengers to vote on continuing

6. You park a tractor-trailer on an incline. How should the front wheels be turned?

   1. So the unit, trailer included, would roll off the road
   2. Toward the curb only on a downhill
   3. So the unit would roll toward traffic
   4. Straight ahead in every case, with the brakes set

7. During your pre-trip you find a loose lug nut with a wrench. What should happen?

   1. Tighten it by hand and continue driving to the delivery
   2. Have a qualified technician inspect it
   3. Note it and check again next week
   4. Drive slowly to your destination

8. A farmer drives a farm-registered Class 3 truck with air brakes. Is an air brake endorsement needed?

   1. Only if the truck has three axles
   2. Yes, every vehicle with any air brakes at all needs one
   3. No, farm-registered Class 3 or 5 vehicles are exempt
   4. Only when hauling grain to an elevator

9. Whom must you notify of a dangerous goods spill in Manitoba?

   1. Only the shipper of the goods
   2. Only Manitoba Public Insurance
   3. Police or fire, and the provincial conservation department
   4. Only your dispatcher, at the end of your driving day

10. In a city with several lanes, which lane should a professional driver normally use?

    1. The centre lane only
    2. The median or left lane
    3. Whichever lane is moving fastest
    4. The curb or right lane

11. What is the 'control speed' on a downgrade?

    1. Half of the vehicle's top speed
    2. Speed with rpm just under governed in the chosen gear
    3. The highest speed from which the brakes can still stop the unit
    4. The posted speed limit for the hill

12. How many times may you pull ahead during the Class 1 straight line backing test?

    1. As many as five times
    2. A maximum of three times
    3. Unlimited, within ten minutes
    4. Only once

13. How far may a load project beyond the front bumper without a permit?

    1. Up to two metres
    2. No more than one metre
    3. Any distance with a red flag
    4. Up to three metres

14. Which foundation brake has no exposed linkage and is self-adjusting?

    1. The S-cam brake
    2. A disc brake with a slack adjuster
    3. A drum brake with manual slacks
    4. The wedge brake

15. How do you release the parking brakes on a bus with DD3 brake chambers?

    1. Pull the yellow knob out and wait one full minute before driving
    2. Press the trailer hand valve twice
    3. Turn the caging bolt clockwise
    4. Use the control valve, then hold the pedal three to five seconds

16. You had too much to drink last night. What will remove the alcohol from your body?

    1. Exercise and plenty of water
    2. Only time
    3. Black coffee and a large meal
    4. A cold shower and fresh air

17. What is the recommended speed on Manitoba ice roads for vehicles of 7 tonnes GVWR or more?

    1. 70 km/h
    2. 50 km/h
    3. 15 km/h
    4. 30 km/h

18. You are disabled on a divided highway. Where do the three reflectors go?

    1. 30 m ahead, 3 m beside and 30 m behind
    2. 10 m, 50 m and 100 m behind the vehicle
    3. 3 m ahead and 30 m and 60 m behind
    4. 3 m, 30 m and 60 m behind the vehicle

19. The trailer service brakes fail while driving. How can you apply the trailer brakes?

    1. Pump the brake pedal rapidly
    2. Close the trailer supply valve
    3. Pull the round blue tractor parking knob
    4. Use the trailer hand valve harder

20. Why is braking in a curve dangerous for a large vehicle?

    1. It adds to centrifugal force; rollover risk
    2. It turns off the ABS warning light
    3. It cools the brakes too quickly and cracks the drums
    4. It moves the load toward the cab

21. Outside a restricted speed area, how close may a truck follow another truck or highway bus?

    1. No closer than 90 m
    2. No closer than 30 m
    3. No closer than 150 m
    4. No closer than 60 m

22. What does the tractor protection system prevent?

    1. The governor from cutting out too soon
    2. The tires from overheating
    3. The trailer from rolling away when it is parked
    4. Total tractor air loss after a breakaway

23. During the hydraulic brake check, the pedal is held for one minute. What result must be reported?

    1. The pedal rises slightly when released
    2. The pedal feels harder with the engine off
    3. The pedal moves toward the floor more than 65%
    4. The pedal stays firm the whole minute

24. When draining air tanks, which discharge should be reported?

    1. Clean air after the moisture drains
    2. Any oil, or a lot of moisture from non-supply tanks
    3. A short hiss when the valve opens
    4. A small amount of moisture from the supply tank only

25. With no guide available, what good practice does MPI suggest while backing?

    1. Back as quickly as possible to clear traffic
    2. Sound the horn for each vehicle length travelled
    3. Back in one long move without stopping
    4. Keep the hazard lights off to avoid confusion