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CDL DOUBLES TRIPLES PRACTICE TEST VIRGINIA

11. Why should you cover your cargo?
To protect people from spilled cargo.
To protect the cargo from weather.
All of the above.
12. If you are being tailgated, you should:
make quick changes.
open up room in front of you.
increase your speed very gradually.
13. Which of these statements about brakes is true?
The lighter the vehicle, the more heat the brakes absorb to stop it.
Brake fade does not result from excessive heat.
None of the above.
14. Empty trucks:
require a shorter stopping distance than full trucks.
require a greater stopping distance than full trucks.
require the same stopping distance than full trucks.
15. If a tire fails while you are driving, you should:
call your supervisor for instructions.
stay off the brake until your vehicle has slowed down.
stop on the roadway if possible.
16. Before driving a vehicle with a dual air system, allow time for the air compressor to build up a minimum of ____ pressure in both the primary and secondary systems.
100 psi
50 psi
75 psi
17. Your vehicle has hydraulic brakes. When you press the brake pedal while driving and the pedal goes to the floor, remember that:
the parking brake should never used to slow the vehicle.
shifting into neutral may help slow the vehicle.
pumping the brake pedal may generate enough hydraulic pressure to stop the vehicle.
18. If you must drive slowly, how should you alert following drivers?
Turn on your taillights
Use your emergency flashers if it is legal
Flash your brake lights
19. As part of your vehicle inspection, you are checking that air flows to all trailers. After using the trailer handbrake to provide air to the service line, you go to the rear of the rig. When you open the emergency line shut-off valve at the rear of the last trailer, you should hear:
the service line valve close.
a mechanical vibration.
air escaping from the open valve.
20. To warn drivers behind you when you see you'll need to slow down, you should:
flash the brake lights.
sound your horn.
use your headlights.
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