Saskatchewan 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. Your permit allows a heavier load, but a bridge sign posts a lower weight limit. What applies?

   1. The sign applies only at night
   2. The posted sign must be obeyed
   3. Either one, at the driver's choice
   4. The permit overrides the sign

2. Which item must a trip inspection report include?

   1. The name of the vehicle's insurer
   2. The driver's home address
   3. The vehicle's odometer reading
   4. The weight of the load carried

3. Which Saskatchewan licence class lets you drive a power unit pulling a semi-trailer?

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

4. Why can't a vehicle displaying dangerous goods placards be used for an SGI road test?

   1. The examiner must have a TDG certificate
   2. The law restricts how placarded vehicles may move
   3. Placards block the examiner's view
   4. Placarded trucks are too heavy for the examiner's test routes

5. On a type 30 chamber, at how much slack must a brake be adjusted?

   1. 1/4 inch (6.4 mm)
   2. 2 1/2 inches (63.5 mm)
   3. 2 inches (50.8 mm)
   4. 1 inch (25.4 mm)

6. How often must taxi, limousine and rideshare drivers file a criminal record check with their company?

   1. Every year
   2. Every three years
   3. Only when first hired
   4. Every five years

7. At what supply-line pressure does the tractor protection valve open its service-line port?

   1. 60 psi
   2. 20 psi
   3. 45 psi
   4. 100 psi

8. On a highway curve to the right, where should you keep the front wheels of a long unit?

   1. Close to the right edge
   2. On the right shoulder
   3. Straddling the centre line
   4. Close to the centre line

9. You want to tow a travel trailer and a boat that weigh 5,200 kg together, behind a pickup. What do you need?

   1. Only a Class 5 licence
   2. Class 1 or a G endorsement
   3. A Class 4 licence
   4. An A endorsement

10. What is a B-train?

    1. A tractor and semi-trailer towing a full trailer hitched with an A-dolly
    2. A truck towing a pony trailer with a rigid drawbar
    3. A tractor and semi-trailer towing a semi-trailer on a rear fifth wheel
    4. A tractor and semi-trailer towing a trailer with a C-dolly

11. Which function belongs to the relay emergency valve on a trailer?

    1. It dries the air before it reaches the trailer tank
    2. It controls the tractor's spring parking brakes
    3. Applies the trailer brakes if the supply line parts
    4. It lowers pressure to the trailer's front axle

12. Why are spring brakes a reliable parking brake?

    1. They use the highest air pressure in the system
    2. They can only be released with a wind-off bolt
    3. They lock the transmission as well as the wheels
    4. They are held on by spring pressure and need no air

13. When should the bus doors be opened at a loading zone?

    1. Just before the bus stops, to save time
    2. Only after the bus has come to a full stop
    3. Whenever passengers stand up to leave
    4. As soon as you begin to slow down

14. How can you apply the trailer brakes without the tractor brakes?

    1. Press the foot valve lightly
    2. Turn on the engine retarder
    3. Use the trailer hand control valve
    4. Pull the yellow parking brake valve

15. Your total load is within the vehicle's capacity but piled at one end. What can happen?

    1. Nothing, as long as the total weight is under the legal limit
    2. The brakes will adjust automatically
    3. Only the fuel economy will suffer
    4. An axle or set of tires can be overloaded

16. At an unsignalled railway crossing, after stopping 4–10 m away, what does the school bus driver do next?

    1. Open the front door and look both ways
    2. Turn off the engine and listen
    3. Activate the stop arm and safety lights
    4. Send a student out to check the tracks

17. Of the Class 1 MELT hours, how many are spent behind the wheel?

    1. 47 hours
    2. 57 hours
    3. 30 hours
    4. 17.5 hours

18. Why use a winter-grade lubricant on a fifth wheel?

    1. Summer grease melts and drips onto the brakes
    2. Summer grease stiffens in cold and hinders steering
    3. Winter grease stops ice from forming around the kingpin
    4. Winter grease is required for the trailer ABS

19. After connecting the air lines, how do you supply air to the trailer?

    1. Pull out the yellow parking brake valve
    2. Open the draincock on the trailer tank
    3. Apply the trailer hand valve fully
    4. Push in the red trailer supply valve

20. At what pressure must the low air warning activate?

    1. Below 100 psi (690 kPa)
    2. Below 45 psi (310 kPa)
    3. Below 20 psi (138 kPa)
    4. Below 60 psi (414 kPa)

21. What following distance should a taxi or ambulance driver keep in good conditions?

    1. At least one second
    2. At least three seconds
    3. At least two seconds
    4. Exactly one car length

22. Stopping distance is made up of which three parts?

    1. Reaction time, brake lag and braking distance
    2. Speed, weight and tire pressure
    3. Brake fade, brake lag and road surface
    4. Following distance, reaction time and gear

23. Before backing under a trailer, how should the fifth wheel look?

    1. Dry, with all grease wiped off
    2. Slide pins pulled out and unlocked
    3. Horns tilted down and jaws unlocked (open)
    4. Horns tilted up and jaws locked

24. With no guide available, what should you do before backing?

    1. Back in one long move to save time
    2. Rely on mirrors without leaving the cab
    3. Set the brake, get out and check the area
    4. Back quickly to limit time in the danger area

25. Who may handle, offer or transport dangerous goods?

    1. Any driver holding a Class 1 licence
    2. Any driver with an air brake endorsement
    3. Anyone holding written permission from the shipper of the goods
    4. A trained person or someone directly supervised by one