SGI Class 3 Practice Test

All 40 questions in this test

Every question and its answer choices. The correct answers and explanations appear when you take the test above.

1. 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

2. 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

3. Which event must be reported immediately by the person in charge of dangerous goods?

   1. A detour around road construction
   2. A change of driver at a rest stop
   3. A delay of one hour at a weigh scale
   4. Any leak or escape from a container

4. What does a converter dolly do?

   1. Lifts an axle off the road when empty
   2. Converts a semi-trailer into a full trailer
   3. Links two tractors for heavy hauling
   4. Converts a tractor into a straight truck

5. 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

6. On a highway curve to the left, where should you keep the front wheels?

   1. In the middle of the lane
   2. Over the centre line slightly, to give the rear wheels room
   3. Close to the right edge
   4. Close to the centre line

7. A fuel tanker has unloaded, but residue still makes it hazardous. How is the shipping document marked?

   1. RESIDUE – LAST CONTAINED
   2. CLEANED – NO HAZARD
   3. EMPTY – NOT REGULATED
   4. RETURN – SEE SHIPPER

8. How far apart are the axle centres in a tandem axle group?

   1. More than 1 m and not more than 1.85 m
   2. Exactly 1.5 m in every case
   3. More than 2.4 m and not more than 3.7 m
   4. Less than 1 m apart

9. What may an express transporter not carry in a vehicle carrying passengers?

   1. Live animals, acids or explosives
   2. Bicycles or wheelchairs
   3. Sealed food or bottled water
   4. Mail, parcels or luggage

10. 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

11. 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

12. What is the maximum legal width of a vehicle and its load on a provincial highway?

    1. 3.05 m
    2. 2.06 m
    3. 2.4 m
    4. 2.6 m

13. How must different classes of livestock be transported together?

    1. Tied together to stop them shifting
    2. Loaded with the largest animals at the front
    3. Separated by a partition
    4. Only with a veterinarian on board

14. You need to turn a tractor-trailer around in a town. What does SGI advise?

    1. Use a three-point turn at the next corner
    2. Drive around the block instead of a U-turn
    3. Back into a driveway and pull out
    4. Make a U-turn on a wide four-lane street

15. 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

16. 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

17. While freight is on the vehicle, which copy of the bill of lading must the driver have?

    1. A photocopy left at the shipper
    2. No copy; it is kept on file
    3. The carrier's original
    4. A duplicate original

18. 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

19. How often must a Transportation of Dangerous Goods training certificate be renewed?

    1. Every 24 months
    2. Every 12 months
    3. Every 36 months
    4. Every 60 months

20. Which warning is required on an over-dimension load during daylight hours?

    1. Clearance lights along the edges
    2. Red flags at its extremities and edges
    3. Reflective tape only on the rear
    4. A white light at the rear

21. 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

22. At what point in a turn is mirror vision of a tractor-trailer most limited?

    1. When the front wheels first begin to turn
    2. When the trailer is straight behind the tractor
    3. When the tractor is at its sharpest angle to the trailer
    4. When the unit has fully completed the turn and straightened out

23. Under the TDG Regulations, Class 3 dangerous goods are what?

    1. Explosives
    2. Flammable liquids
    3. Radioactive materials
    4. Corrosives

24. Your overheight load will be taller than 5.2 m. Whom must you check with before moving it?

    1. The nearest weigh scale
    2. SGI's Medical Review Unit
    3. SaskPower and SaskTel
    4. The local fire department

25. You are hauling gravel in an open box. What should you do?

    1. Drive slower than 60 km/h instead
    2. Fill the box only to the halfway mark
    3. Cover the load completely with a tarp
    4. Wet the gravel so it stays in place

26. Turning left with a semi-trailer from a two-way street, how close should the trailer stay to the centre line?

    1. Within about three metres
    2. Centred in the lane
    3. Straddling the centre line
    4. Within about one metre

27. 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

28. 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

29. 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

30. What is off-tracking?

    1. Rear wheels following a shorter path than the front wheels
    2. Trailer tires sliding sideways on a wet road
    3. Front wheels drifting toward the outside edge of a sharp curve
    4. The tractor pulling away from the centre line

31. Which hazard class covers corrosives?

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

32. 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

33. Why should tailgate loading never be practised?

    1. It wastes space at the front of the box
    2. It is allowed only when hauling empty pallets or bins
    3. It makes unloading at docks slower
    4. It strains the equipment and leads to collisions

34. Signs allow two lanes to turn left. Which lane should a tractor-trailer use?

    1. Both lanes at once
    2. The lane furthest to the left
    3. Whichever lane has less traffic
    4. The lane furthest to the right

35. Who must supply the placards and product identification number to the first carrier?

    1. The driver's employer
    2. The consignor (shipper)
    3. The consignee (receiver)
    4. The provincial highway ministry

36. Under the weight and dimension regulations, a bus is a vehicle designed to carry more than how many passengers?

    1. 36
    2. 24
    3. 15
    4. 10

37. 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

38. Before a right turn with a long unit, why position the trailer as SGI shows?

    1. To stop traffic from squeezing in on your right
    2. To give pedestrians a wider crosswalk
    3. To keep the trailer off the centre line
    4. To let following cars pass on the left

39. How long must a carrier keep dangerous goods documents?

    1. Until the next audit
    2. Six months
    3. Five years
    4. Two years

40. 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