Saskatchewan 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. You park a tractor-trailer on a grade with no curb. What should you do with the wheels?

   1. Turn them sharply left and set the brakes
   2. Leave them straight and use the trailer hand valve
   3. Leave them straight, set the brakes and block the wheels
   4. Turn them sharply right and hold the unit with the hand valve

2. At about what temperature do most brake linings work best?

   1. Around 250 °C
   2. Around 30 °C
   3. Around 120 °C
   4. Around 300 °C

3. A taxi driver finds a serious brake defect partway through a shift. What should happen?

   1. Drive it slowly to the next fare and back to the garage
   2. Have it towed rather than driven
   3. Tell the next passenger about it
   4. Finish the shift carefully, then report it

4. What is 'dynamiting'?

   1. An emergency trailer brake application from sudden air loss
   2. A slow, steady leak from the service line under braking
   3. Pumping the brakes rapidly to stop on glare ice
   4. Charging the trailer system to full reservoir pressure

5. What can happen if a very heavy load is placed on one side of a truck?

   1. The truck will steer more easily
   2. Light-side brakes may lock and flat-spot tires
   3. The springs on both sides share the extra load equally
   4. The heavy-side tires will wear less

6. During offset backing to the driver's side, when do you turn the wheel fully left?

   1. Before you put the unit in reverse
   2. When the tractor tires line up with the landing gear
   3. As soon as the trailer begins to move backward at all
   4. When the rear of the trailer reaches the edge of the stop box

7. On a highway with a speed limit over 50 km/h, how far before a stop must the school bus safety lights come on?

   1. At least 25 m
   2. At least 100 m
   3. At least 200 m
   4. At least 50 m

8. A truck hauling petroleum must carry what minimum fire extinguisher rating?

   1. One 2A-10 B.C. only
   2. One 3A-40 B.C. or two 2A-10 B.C.
   3. One 20 B.C. or two 10 B.C.
   4. One 5 B.C. or two 2 B.C.

9. Placards rather than labels are used on containers larger than what capacity?

   1. 450 litres
   2. 200 litres
   3. 45 litres
   4. 1,000 litres

10. A Class 2 licence is required to drive a bus carrying passengers when the bus seats how many?

    1. More than 10 passengers
    2. More than 24 passengers
    3. More than 15 passengers
    4. More than 36 student passengers

11. After you hear the fifth wheel lock, how should you confirm the coupling?

    1. Drive one block and then check it
    2. Rock the trailer with the landing gear
    3. Listen for the air dryer to purge
    4. Do at least two tug tests and look at the jaws

12. Which hazard class covers corrosives?

    1. Class 8
    2. Class 9
    3. Class 5
    4. Class 2

13. The safety valve on the supply reservoir blows off air. What does this indicate?

    1. A problem with the governor
    2. A worn brake lining
    3. Normal operation in cold weather
    4. A leak in the service line

14. What colour and shape is the trailer-supply valve control usually?

    1. A red octagonal button
    2. A blue round knob
    3. A green square switch
    4. A yellow diamond-shaped button

15. What must every trailer equipped with brakes have in case it breaks loose?

    1. A spare set of gladhands kept in a sealed box
    2. A second electrical cord as backup
    3. A reflector on the hitch tongue
    4. A device to apply its brakes automatically

16. What is the maximum height of a vehicle and load without a permit?

    1. 4.15 m
    2. 4.5 m
    3. 3.85 m
    4. 5.2 m

17. Which vehicles must have a trip inspection once in every 24-hour period while in use?

    1. Trucks over 11,794 kg and buses seating over 10
    2. Only trucks that cross a provincial border during the trip
    3. Only vehicles carrying dangerous goods under a placard
    4. All Class 5 vehicles used for work

18. Pulling on the slack adjuster, you measure 1 1/8 in. of push rod travel. What should you do?

    1. Drain the reservoirs and recheck
    2. Have the brake adjusted before driving
    3. Nothing; up to 2 in. is acceptable
    4. Add air pressure and recheck

19. For a sharp right turn with a bus, how far from the curb should you approach the intersection?

    1. About 1 to 1.5 m (3 to 5 ft.)
    2. Right against the curb
    3. In the centre of the left lane
    4. About 3 to 4 m (10 to 13 ft.)

20. Where does SGI place a single concentrated load on a straight truck?

    1. Against the cab, standing upright
    2. Over the front axle, on its end
    3. At the tailgate, standing on its end for easy unloading
    4. Just ahead of the rear axle, lying flat

21. Your truck and trailer measure 17.8 m. Using SGI's method, what is your minimum following count?

    1. 6 seconds
    2. 9 seconds
    3. 4 seconds
    4. 3 seconds

22. How are spring brakes applied and released?

    1. Applied by hydraulic fluid, released by air
    2. Applied and released by air pressure
    3. Applied by spring force, released by air pressure
    4. Applied by air pressure, released by spring force

23. Backing a tractor and semi-trailer, which way do you turn the tractor's front wheels to move the trailer's rear left?

    1. Straight, letting the trailer find its path
    2. Fully left, then fully right in quick turns
    3. To the left, the same as the desired direction
    4. To the right, opposite the desired direction

24. Which vehicle needs a Class 4 licence in Saskatchewan?

    1. A highway coach seating 40
    2. A two-axle truck towing 6,000 kg
    3. A three-axle gravel truck
    4. An ambulance being used for hire

25. When do spring road bans usually come into effect in Saskatchewan?

    1. In January or February
    2. In October or November
    3. In March or April
    4. In May or June