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Water accumulations freezing and causing brake failure.
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Squishy brakes.
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Too much air collecting in the tanks.
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Hawaii CDL Permit Test - Air Brakes
(From the 2020 Hawaii CDL driver handbook)
| Number of questions: | 25 |
| Passing score: | 20 |
Directions:
This endorsement is required for driving a vehicle with air brakes. To receive this endorsement, applicants must pass a written test. The test consists of 25 multiple choice questions. Each question has three answer choices. To pass, the applicant must answer at least 20 questions correctly. Test questions come from the Hawaii Commercial Driver License Manual. Questions come from the chapter covering: Air Brakes. The Air Brakes endorsement may be used with the Class A, B or C CDL.
Passing grade —
5 or fewer errors
advertising
1.
Failing to drain air tanks could result in:
2.
Which of the following is not part of a vehicle’s air brake system?
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Air gauges
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Low pressure warning device
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Air filter
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3.
What should happen before the air pressure in an air brake system tank falls below 55 psi?
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The warning light should activate.
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The vehicle will be unable to shift out of gear.
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The front lights should flash.
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4.
In a vehicle with dual air brakes, a leak in one system ____ the second system.
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Will always affect
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May not affect
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Is caused by
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5.
The parking brake in a newer vehicle is applied by:
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Moving a lever to the right.
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Pushing a yellow, diamond-shaped knob.
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Pulling a yellow, diamond-shaped knob.
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6.
Lights that indicate that anti-lock brakes are not working are:
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Gray.
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Blue.
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Yellow.
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