HAWAII CDL COMBINATION PRACTICE TEST

11. If the drive wheels begin to spin when accelerating, you should:
take your foot off the accelerator.
continue to accelerate.
brake gently.
12. You are driving on a steep downgrade in the proper low gear. Your "safe" speed is 40 mph. When your speed reaches 40 mph, you should:
apply the brakes to quickly reduce your speed to 25 mph, and then release the brakes.
apply the brakes to gradually reduce your speed to 35 mph, and then release the brakes.
increase your speed to approximately 45 mph, and then apply release the brakes.
13. When the tractor protection valve closes, the trailer _______ brakes will come on.
service
emergency
parking
14. When checking your tires during a pre-trip inspection, which of the following is acceptable?
Dual tires that come in contact with parts of the vehicle
Cracks in the tires
Tires made by different manufacturers
15. If driving a new vehicle, you should familiarize yourself with the controls and equipment:
within the first 50 miles.
before you start driving.
as you drive.
16. Which of the following is NOT part of testing the tractor protection valve?
Stepping on and off the brake pedal several times to reduce the air pressure in the tanks.
Pulling forward slowly, then applying the trailer brakes.
Charging the trailer air brake system.
17. When uncoupling a trailer, after shutting off the trailer air supply to lock the trailer brakes, you should:
pull the tractor forward until the fifth-wheel comes out from under the trailer.
inspect the trailer supports.
back up gently to ease the pressure on the fifth-wheel locking jaws.
18. As part of the final air brake check, you should:
Check air compressor governor cut-in and cut-out pressure.
Test air leakage rate.
All of the above.
19. Livestock:
should never be kept bunched together.
can move around in a trailer and cause unsafe handling.
should never be carried on a trailer.
20. When the wheels of a trailer lock up, the trailer will tend to swing around. This is more likely to happen when:
the trailer is fully loaded.
the trailer is overloaded.
the trailer is empty or lightly loaded.
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