CDL COMBINATION PRACTICE TEST WEST VIRGINIA

11. _________ can make vehicle handling unsafe.
Poor weight balance
Dry roads
ABS
Poor ventilation
12. An Anti-lock Braking System:
increases a vehicle's stopping power.
lets you brake faster.
increases the distamce required to stop on slippery surfaces.
keeps your wheels from locking when you brake hard.
13. Which of the following is NOT part of checking the sliding fifth-wheel?
Checking that the slide is not damaged or parts are missing
Checking that it is properly greased
Testing the tractor protection valve
Checking that all locking pins are present and locked in place
14. Which of the following will NOT help you prevent rollover?
Keeping the cargo as close to the ground as possible.
Using the controlled braking method.
Driving slowly around turns.
All of the above.
15. You are inspecting your vehicle during a trip. What should you do?
Watch gauges for signs of trouble.
Check critical items such as tires, brakes, and lights.
Use your senses to check for problems.
All of the above.
16. The best way to recognize that your trailer has started to skid is:
by seeing it in your mirrors.
by hearing squeaking noises from the wheels.
by using retarders.
None of the above.
17. Most heavy vehicles require ________ change gears.
single clutching
double shifting
triple shifting
double clutching
18. You are driving a modern truck with a manual transmission. When going down a hill you should usually:
use the same gear you would use to go up the hill.
use a lower gear than would be required to go up the hill.
shift into neutral and coast.
downshift after your speed has already built up.
19. To avoid rollbacks when you start, you should:
if you have manual transmission, partly engage the clutch before you take your right foot off the brake.
release the parking brake only when you have applied enough engine power.
put on the parking brake whenever necessary.
All of the above.
20. Dual tires:
should always come in contact with each other.
should come in contact with each other whenever possible.
should not come in contact with each other.
are dangerous.
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