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Driving Commercial Vehicles ICBC Exam Questions and Answers
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Driving Commercial Vehicles ICBC Exam Questions and Answers
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Driving Commercial Vehicles: ICBCExam Questions and Answers
Chapter 1:
What kinds of vehicles require the driver to have an air brake endorsed drivers licence
in order to operate them. - Answer -Any vehicle with air-over-hydraulic brakes.
Endorsement code: 15
Chapter 1:
Which driver licence classes allow you to operate a school bus? - Answer -Class 1
Class 2
Class 4 (unrestricted)/(restricted)
Class 5 (Passenger vehicles used as school buses with seating capacity of not more
than 10 including the driver)
Chapter 1:
What are the steps to obtain an air brake endorsement? - Answer -Step 1: complete air-
brake course- 7 hours in length. (given a certificate or other proof of course completion)
Step 2: Study for air-brake endorsement test.
Step 3:Apply for an air-brake endorsement at the driver licensing office.
*present primary/ secondary ID
*Provide proof of air-brake experience
*Pay for the knowledge test
*Take air-brake knowledge test
Step 4: make appointment to take air-brake pre-trip inspection test.
Step 5: Take air-brake pre-trip inspection test.
*bring vehicle with air-brakes.
Step 6: Receive temporary licence with an air-brake endorsement after passing all tests/
paying fees.
,Chapter 1:
What classes of licence or licence endorsements allow you to operate a trailer equipped
with air brakes weighing over 4,600 kg? - Answer -Class: 1
Class: 2 (can exceed 4,600 kg if no air-brakes)
Class: 3 (can exceed 4,600 kg if no air-brakes)
Class 5 or 7*: trailers or towed vehicles may not exceed 4,600 kg.
Chapter 2:
What's the final factor that will determine if the vehicle will move? - Answer -Amount of
traction its tires have on the road surface.
*friction is the force that resists movement between two surfaces in contact with each
other.
Chapter 2:
How is brake heat dissipated? - Answer -The heat is absorbed/ dissipated into the
atmosphere, primarily through the brake drums/rotors.
*To stop the vehicle, brake linings rub against the brake drum, or in the case of disc
brakes, brake pads rub against the brake rotor. This creates friction, converting the
vehicle's energy of heat which stops the vehicle.
Chapter 2:
If the weight of the vehicle is doubled, how many times must the stopping power be
increased? - Answer -2 X vehicle weight requires 2 X the stopping power.
Chapter 2:
What causes brake fade? - Answer -Occurs when your brakes stop working properly
because they're overheated.
*Vehicle will take longer to stop, or may not stop at all if speed hasn't been properly
controlled.
Chapter 2:
What can cause jackknifing? - Answer -Occurs when a tractor & trailer form an angle of
90 degrees or less, relative to one another.
*Often caused by poor braking techniques, including improper use of retarders.
, Chapter 2:
What's the difference between ABS & ATC? - Answer -ABS: Anti-lock braking system,
helps prevent wheel lockup/ or skids caused by over-braking on slippery road surfaces.
*mandatory on all trucks/ buses over 4,560 kg
ATC: Automatic Traction Control, uses pulsating signal from the speed sensors to
detect loss of drive wheel traction on slippery road surfaces.
*If drive wheel begins to spin, the traction control system will apply brake, transferring
power to opposite side.
*In extremely slippery conditions the traction control system will reduce engine power,
allowing the wheels to regain traction.
*most vehicles equipped with ATC will have an information decal on the dash-mounted
lamp that will light if wheel spin occurs.
Chapter 2:
What's one of the hazards of stopping a tractor/ trailer combination? - Answer -1.
applying trailer brakes on spillers roads may cause the wheels to lock up, which can
result in a skid or jackknife.
2. When the cargo area is empty and there's no ABS the vehicle's wheels may bounce
and lock up, making braking more difficult/ increase stopping distance.
3. In bad weather, slippery conditions/ mountain driving, risk of skidding/ loss of traction
increases.
Chapter 2:
When should a retarding device be used? - Answer -Designed to provide auxiliary
slowing of the vehicle.
*controlling speed on long downgrades without use of main braking system. More
efficient at a higher R.P.M/ lower vehicle speed.
retarders also known as: engine brakes.
4 main types:
*engine retarders
*exhaust retarders
*hydraulic driveline retarders
*electric driveline retarders
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