Saskatchewan Commercial Practice Test 10

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. In what order does SGI recommend doing a trip inspection?

   1. Interior, brake response tests, exterior, then engine compartment
   2. Engine compartment, exterior, interior, brake tests
   3. Exterior, engine, brake tests, interior
   4. Brake tests, engine, interior, exterior

2. On which public service vehicles may passengers stand?

   1. Any bus on a short route
   2. Any bus under 24 seats
   3. Highway coaches, if seats are full
   4. Only local transit vehicles

3. How should you approach an intersection where your view is limited?

   1. At normal speed if your light is green, since you have the right of way
   2. At normal speed, sounding the horn
   3. Faster, to clear it before others arrive
   4. At a speed you can stop from, foot over the brake

4. What is the maximum difference in diameter allowed between two tires in a set of duals?

   1. 25 mm (1 in.)
   2. 12.5 mm (1/2 in.)
   3. 6 mm (1/4 in.)
   4. 38 mm (1 1/2 in.)

5. What is the heaviest towed unit a Class 3 truck driver may pull without needing a Class 1 licence?

   1. 11,794 kg
   2. 2,600 kg
   3. 1,360 kg
   4. 4,600 kg

6. When must the strobe light on a school bus be used?

   1. Only in fog, rain or snow, at any time of day
   2. Only on gravel roads at night
   3. Only while students are loading or unloading at a stop
   4. Whenever carrying passengers outside a town

7. What is a trailer jackknife?

   1. The rear of the trailer swings around
   2. The kingpin breaks loose from the fifth wheel
   3. The trailer tips onto its side
   4. The tractor's rear skids sideways

8. When should you downshift before going down a hill?

   1. Only if the brakes begin to fade
   2. Halfway down, when speed starts to rise
   3. Before you pass the crest of the hill
   4. At the bottom, before the next climb

9. How often must air reservoirs be completely drained when the vehicle is in use?

   1. Only when the air dryer fails
   2. Once a week
   3. Once a day
   4. Once a month

10. With air ride suspension, what do you do with the tractor suspension as you back under the trailer?

    1. Dump it and leave it down while driving away from the yard
    2. Leave it unchanged the whole time
    3. Dump it, then restore normal height
    4. Raise it to the highest setting first

11. For the school bus road test, an unrestricted S endorsement needs a bus carrying at least how many student passengers?

    1. 24 student passengers
    2. 36 student passengers
    3. 48 student passengers
    4. 15 student passengers

12. How do you test the park brake during the brake response tests?

    1. With it applied, rev the engine hard
    2. With it released, pump the foot brake
    3. With it applied, try to pull ahead gently
    4. With it released, coast down a slope

13. Single unit, engine off, full foot brake held: how much air loss is allowed after the initial drop?

    1. No more than 3 psi in two minutes
    2. No more than 4 psi in one minute
    3. No more than 10 psi in one minute
    4. No more than 1 psi in one minute

14. Your truck stalls on a railway crossing and a train is coming. Which way should you move once out?

    1. Along the tracks, away from the train
    2. Back to the cab to keep trying to start it
    3. Away from the tracks, toward the oncoming train
    4. Away from the tracks in the train's direction of travel

15. How often must a 50-year-old commercial driver file a new medical report?

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

16. You need to descend a steep grade. Which gear does SGI suggest you choose?

    1. The highest gear, to keep engine rpm low
    2. Neutral, using the service brakes only
    3. Two gears above the one used to climb it
    4. Usually one gear below the one used to climb it

17. In a train, the rear trailer starts to fishtail. What does SGI recommend?

    1. Brake hard with the foot valve and steer away from the swing
    2. Steer sharply against the swing
    3. Lightly apply trailer brakes and add power
    4. Release power and coast to a stop

18. After adjusting a manual slack adjuster, how much push rod travel should there be when pulled by hand?

    1. Less than 1/8 inch
    2. 1 to 1 1/2 inches
    3. 1/2 to 3/4 inch
    4. About 2 inches

19. When may a school bus driver back up on school grounds?

    1. Never, even with a guide
    2. Whenever the mirrors show the area is clear
    3. Only before students arrive in the morning
    4. Only when a responsible person is guiding

20. How much fuel can an idling class 8 truck engine burn at 900 rpm?

    1. Up to one litre per hour
    2. Up to twelve litres per hour
    3. Up to half a litre per hour
    4. Up to four litres per hour

21. While driving you start to feel dizzy and drowsy. What could be the cause and what should you do?

    1. Low blood sugar; eat while you keep driving
    2. Tire noise; turn up the radio to stay alert
    3. Normal fatigue; open the window wider and keep on driving
    4. Possible carbon monoxide; stop and get fresh air

22. How often must a Saskatchewan taxi pass a Periodic Motor Vehicle Inspection?

    1. Every 12 months
    2. Every 24 months
    3. Every 5 years
    4. Every 6 months

23. Which manoeuvres are added to the Class 1 road test?

    1. Parallel parking on a city street and a hill start only
    2. Offset and alley dock backing, coupling and uncoupling
    3. A U-turn in town and a reverse slalom
    4. A skid pad recovery test and a controlled emergency stop

24. When passing on a highway, what sight distance should a school bus driver have?

    1. At least 50 seconds
    2. At least 20 seconds
    3. At least 2 minutes
    4. At least 10 seconds

25. Why are the front brake chamber and slack adjuster mounted on the backing plate?

    1. Because it keeps them away from road heat
    2. Because the front axle has no S-cam
    3. Because the front brakes need more air
    4. Because the axle's steering action would interfere