BC Class 1–4 Mock Exam 1

All 50 questions in this test

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

1. On an evenly loaded tractor-semitrailer, about what share of cargo weight is on the steering axle?

   1. About 1 per cent
   2. About 10 per cent
   3. About 25 per cent
   4. About 45 per cent

2. Using the applied stroke method on a Type 30 chamber, when does the brake need adjusting?

   1. When applied stroke is 1 inch
   2. When applied stroke is under ½ inch
   3. When applied stroke is 1¼ inches
   4. When applied stroke exceeds 1¾ inches

3. What must the total working load limit of your tiedowns be?

   1. At least 50 per cent of the cargo weight
   2. At least 20 per cent of the cargo weight
   3. At least 100 per cent of the cargo weight
   4. Equal to the vehicle's GVW

4. What is the maximum height of a commercial vehicle in B.C. without an oversize permit?

   1. 3.9 m
   2. 4.0 m
   3. 4.15 m
   4. 4.4 m

5. When should you drain a trailer's air suspension before parking it?

   1. Before applying the trailer brakes
   2. Only in winter
   3. After driving away from the parked trailer
   4. Never; leave it charged

6. Before leaving the curb in a bus, how should you check traffic?

   1. Wait for a passenger's signal
   2. Sound the horn and go
   3. Mirrors alone
   4. Mirror and over your shoulder

7. May a vehicle carrying dangerous goods be used for an ICBC road test?

   1. Yes, if it is placarded
   2. Yes, for Class 1 only
   3. No
   4. Yes, with the shipper's consent

8. By how much can fuel-efficient driving techniques improve fuel economy?

   1. Up to 5 per cent
   2. Up to 30 per cent
   3. Up to 60 per cent
   4. They make no real difference

9. The primary section of a dual system fails. Which brakes still apply?

   1. Only the drive axle brakes
   2. Only the steering axle brakes
   3. All brakes normally
   4. No brakes at all

10. Who needs a passenger transportation licence?

    1. Whoever runs a vehicle carrying passengers for hire
    2. Any driver with a Class 4 licence
    3. Only drivers of buses with more than 25 seats
    4. Only taxi companies with 10+ cars

11. A line rupture empties the primary reservoir. What protects the secondary reservoir?

    1. The safety valve
    2. The one-way check valve
    3. The quick release valve
    4. The governor

12. Below what thickness may a peace officer put a vehicle out of service for drum brake linings?

    1. 1/16 inch (1.6 mm)
    2. 1/2 inch (12.7 mm)
    3. 1/4 inch (6.4 mm)
    4. 1/8 inch (3.2 mm)

13. When is an overload permit issued?

    1. Whenever the shipper asks
    2. For any load under 4.4 m wide
    3. Only on weekends
    4. Only when the load cannot be reduced

14. Before working underneath the vehicle during an inspection, what should you do?

    1. Release the parking brakes
    2. Take the keys out of the ignition
    3. Start the engine to build air
    4. Remove the wheel blocks

15. When must the light at each passenger entrance come on?

    1. When the door opens
    2. When the engine starts
    3. Only for school routes
    4. Only at night

16. What does a visible red marking on a new pushrod mean?

    1. The brake was adjusted correctly this morning
    2. The brake is badly out of adjustment
    3. The pushrod is the wrong size
    4. The chamber is a long-stroke type

17. When does a 30 km/h playground zone limit apply in B.C.?

    1. Only when children are visible
    2. Weekdays from 7 a.m. to 7 p.m.
    3. School days, 8 a.m. to 5 p.m.
    4. Every day from dawn to dusk

18. What standard must school bus fire extinguishers meet?

    1. ULC Standard 100
    2. ISO 9001
    3. NSC Standard 13
    4. CSA Standard D250

19. A learner drives a bus with a Class 2 learner's licence. Who else may ride along?

    1. Only the supervisor and other Class 2 learners
    2. Family members of the learner only
    3. Up to 10 passengers if the supervisor agrees
    4. Any passengers on a scheduled route

20. When is a trip inspection report needed for a trailer you pick up?

    1. Only for trailers over 10 years old
    2. Only when hauling dangerous goods
    3. Once a week per trailer
    4. For every new trailer each day

21. Which wear pattern shows a tire is underinflated?

    1. One side only wears faster
    2. Wear stays perfectly even
    3. The centre of the tread wears faster
    4. The outer edges of the tread wear faster

22. When does an engine retarder work best?

    1. At low engine r.p.m. and high road speed
    2. Only when the clutch is pressed
    3. Only on slippery roads
    4. At higher engine r.p.m. and lower road speed

23. What is a major cause of retread (recapped) tire failure?

    1. Overinflation
    2. Driving in the rain
    3. Underinflation
    4. Cold weather

24. How does the heavy trailer endorsement (code 20) pre-trip differ from Class 1?

    1. It leaves out the air brake steps
    2. It is done with the engine running
    3. It adds a coupling-only test
    4. It skips the lights check

25. How many reservoirs do most dual air brake systems have?

    1. Three
    2. Five
    3. Two
    4. One

26. On a multi-day trip, when is a new trip inspection report due?

    1. By the first rest stop of each later day
    2. Only at the very end of the multi-day trip
    3. Only if a defect appears
    4. Every 1,000 km

27. What must every trailer's emergency system do if the trailer separates?

    1. Release all trailer brakes
    2. Fully apply the trailer brakes
    3. Lower the landing gear
    4. Sound a warning horn

28. While backing toward the trailer, where should you first stop?

    1. When the landing gear lifts
    2. One metre short of the trailer
    3. Right after the jaws have locked on the kingpin
    4. When the fifth wheel just touches the apron

29. How tall must the letters on a "School Bus" sign be?

    1. At least 20 cm
    2. At least 15 cm
    3. At least 10 cm
    4. At least 30 cm

30. Does the reclining back seat of a bus count as a sleeper berth?

    1. Only for the co-driver
    2. No
    3. Yes, on trips over 500 km
    4. Yes, if it reclines fully

31. How are bus passengers usually injured?

    1. Collisions with other buses
    2. Abrupt stops, starts or turns
    3. Fires in the engine bay
    4. Falling out of windows

32. How many tiedowns secure a vehicle over 4,500 kg carried as cargo?

    1. At least six, any rating
    2. Two, one at the front and one at the rear
    3. Four, each rated at least 2,268 kg
    4. One chain over the frame

33. After tightening a manual slack adjuster until the linings touch the drum, how far do you back off?

    1. About 1/3 of a turn
    2. About 1/8 of a turn
    3. Two full turns
    4. Not at all

34. What colour is the dash parking brake control on most vehicles?

    1. Green
    2. Red
    3. Blue
    4. Yellow

35. What does a relay valve reduce?

    1. Wear on the brake linings
    2. Fuel used by the compressor
    3. Air pressure in the wet tank
    4. Lag on both application and release

36. When must a school bus driver use the flashing red lights?

    1. At every railway crossing, with or without signals
    2. Only in school zones
    3. Whenever the bus is parked
    4. Whenever passengers cross the road

37. In the United States, how many hours may you drive after 10 hours off duty?

    1. 9 hours
    2. 13 hours
    3. 15 hours
    4. 11 hours

38. Which vehicles must carry approved warning devices for breakdowns?

    1. Every vehicle with a Class 5 licence holder
    2. Only tractor-trailers over 63,500 kg
    3. Vehicles seating over 10, or over 2.3 m wide
    4. Only vehicles carrying dangerous goods of any class

39. Which way should you walk around the vehicle during a pre-trip inspection?

    1. Clockwise, with traffic behind you
    2. Only along the curb side
    3. Counter-clockwise, facing oncoming traffic
    4. Any way, as long as it is quick

40. On a highway, how much space should you leave between your large commercial vehicle and another large commercial vehicle?

    1. At least 150 m (500 ft)
    2. At least 20 m (65 ft)
    3. At least 60 m (200 ft)
    4. At least one vehicle length

41. May you retrofit manual slack adjusters on a vehicle built with automatic ones in B.C.?

    1. Yes, on trailers only
    2. No, it is illegal
    3. Yes, with a mechanic's note
    4. Yes, if they are new

42. During the circle check, what should be true of the landing gear?

    1. Removed for the trip
    2. Touching the ground lightly
    3. Lowered halfway to steady the trailer in turns
    4. Fully raised, crank handle secured

43. Whom does a taxi driver have a duty to carry?

    1. Only customers going downtown
    2. All paying customers
    3. Only pre-booked customers
    4. Anyone the driver chooses

44. On which axles are spring parking brakes mounted?

    1. Trailer axles only
    2. All axles
    3. Steering axles only
    4. Rear axles only

45. Why can a bobtail tractor's rear brakes lock up easily?

    1. The governor cuts out early
    2. There is little weight on the drive axles
    3. The trailer air supply valve stays open
    4. The steering axle has no brakes

46. An automatic slack adjuster shows excessive stroke. What should happen?

    1. Remove it and fit a manual one
    2. Have a qualified mechanic repair it
    3. Ignore it; it will reset itself
    4. Adjust it by hand and drive on

47. In an s-cam brake, what spreads the linings against the drum?

    1. The s-shaped head of the camshaft
    2. A wedge between rollers
    3. The brake shoe return springs
    4. Hydraulic pistons

48. During the pump-down, before what pressure must the governor cut in?

    1. 100 p.s.i.
    2. 80 p.s.i.
    3. 45 p.s.i.
    4. 60 p.s.i.

49. The limit is 90 km/h and you pass a stopped tow truck with flashing lights. What is your maximum speed?

    1. 80 km/h
    2. 70 km/h
    3. 60 km/h
    4. 40 km/h

50. At what pressure should the low-air warning come on during the pump-down?

    1. Exactly 80 p.s.i.
    2. At or below 40 p.s.i.
    3. At or above 60 p.s.i.
    4. At 20 p.s.i.