Saskatchewan Commercial Practice Test 4

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. A temporary foreign worker has a Class 1 licence from another country. Can they drive a semi in Saskatchewan?

   1. Yes, with an air brake endorsement
   2. Yes, for up to 90 days after entering Canada
   3. Yes, if an employer's supervisor rides along
   4. No; they need MELT and a Saskatchewan Class 1

2. While you are in the cab, where must the dangerous goods shipping document be?

   1. Within reach or in the driver's door pocket
   2. In the toolbox under the bunk
   3. Inside the trailer with the load
   4. Locked in the glove box or the sleeper cabinet

3. During a Class 2 bus trip inspection, what must you check at the emergency exits?

   1. They are locked so passengers cannot open them
   2. They open and close properly and the alarm works
   3. Only the roof hatch, since doors are checked daily
   4. They are covered to keep out dust and cold

4. What must you show for an air brake A endorsement besides passing the written test?

   1. How to reset an ABS controller
   2. How to replace an air compressor
   3. How to adjust a manual slack adjuster
   4. How to rebuild and reseal a service brake chamber

5. How should you fight a fire under the hood of your truck?

   1. Throw the hood fully open so you can reach all of the flames
   2. Pour water through the grille onto the engine
   3. Leave the engine running to blow out the fire
   4. Open the hood only slightly and aim the extinguisher in

6. When uncoupling, how far should you lower the landing gear?

   1. Until the trailer lifts fully clear of the fifth wheel plate
   2. Until the trailer is level with the dock
   3. Just until the pads touch the ground lightly
   4. Until most weight is off the tractor, trailer still on the fifth wheel

7. If both the weight and the speed of a truck are doubled, how much more stopping power is needed?

   1. Eight times as much
   2. Sixteen times as much
   3. Four times as much
   4. Twice as much

8. For a two-point highway turn-about, how far past the intersection should the trailer's rear be when you stop?

   1. At least 3 m (10 ft.)
   2. At least 30 m (100 ft.)
   3. At least 9 m (30 ft.)
   4. Exactly level with the approach

9. Where is air turbulence from a fast-moving truck most dangerous to a car?

   1. Just in front, beside the fuel tanks, or right behind
   2. Only two or three car lengths behind the rear of the trailer
   3. Only in the opposite lane of a divided road
   4. Only directly beside the truck's cab door

10. To avoid a blank stare in traffic, how often should you train your eyes to shift?

    1. About every fifteen seconds
    2. About every five seconds
    3. About every eight seconds
    4. About every two seconds

11. How far from an intersection should you preferably park when stopping for a break?

    1. 300 m (1,000 ft.) or more
    2. 15 m (50 ft.) or more
    3. 153 m (500 ft.) or more
    4. 50 m (165 ft.) or more

12. When does the service line contain air?

    1. Whenever the trailer-supply valve is open
    2. Only when a brake application is made
    3. Whenever the engine is running
    4. Only when the parking brakes are applied

13. In a dual-circuit system on a two-axle truck, which brakes does the primary reservoir normally operate?

    1. The spring parking brakes
    2. The trailer brakes only
    3. The front service brakes
    4. The rear service brakes

14. A bus with passengers reaches an uncontrolled railway crossing. How far from the nearest rail should it stop?

    1. At least 5 m (15 ft.)
    2. At least 1 m (3 ft.)
    3. At least 30 m (100 ft.)
    4. At least 15 m (50 ft.)

15. After driving in the dark, how long can it take to recover from oncoming headlight glare?

    1. Up to five seconds, longer with age
    2. About two seconds at any age
    3. Exactly ten seconds for all drivers
    4. Less than one second for most drivers

16. What is the final factor that determines whether a vehicle stops?

    1. The thickness of the brake linings
    2. Traction between the tires and the road
    3. The size of the brake chambers
    4. The air pressure in the reservoirs

17. An empty tanker that normally hauls gasoline approaches an uncontrolled railway crossing. What must it do?

    1. Cross without stopping, since it is empty
    2. Slow to 30 km/h and cross carefully
    3. Stop at least 5 m from the nearest rail
    4. Stop only if a train is visible

18. Who is responsible for making sure a load does not fall onto the highway?

    1. Both the driver and the owner
    2. Only the company dispatcher
    3. Only the shipper of the load
    4. Only the owner of the vehicle

19. During your walk-around you see a rust trail around one wheel nut. What might it mean?

    1. The tire is over-inflated
    2. The hub oil is overfilled
    3. The lug nut may be loose
    4. The brake drum is too thin

20. Why might other drivers fail to react to your siren in winter?

    1. Cold air makes sirens far louder than in summer
    2. Closed windows make the siren hard to hear
    3. Winter tires drown out the siren
    4. Snow reflects the sound toward them

21. Why is a relay valve installed near the rear brake chambers of a long vehicle?

    1. To reduce brake lag at the rear wheels
    2. To lower air pressure to the front brakes
    3. To hold the brakes on when parked
    4. To dry the air before it reaches the brakes

22. With the brakes released, what angle should the slack adjuster arm make with the push rod?

    1. Less than 90°
    2. Exactly 180°
    3. Exactly 45°
    4. Greater than 90°

23. How long before driving a school bus must a driver avoid alcohol?

    1. Four hours
    2. Twenty-four hours
    3. Eight hours
    4. Twelve hours

24. What is the maximum length of a B-train?

    1. 27.5 m
    2. 23 m
    3. 26 m
    4. 30 m

25. What is the job of the air compressor?

    1. To build up and maintain air pressure
    2. To remove water from the air supply
    3. To apply air to the brake chambers
    4. To store air for several brake stops