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The compressor needs more air.
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|
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The air pressure has become too high.
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The brakes are fully operational.
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Rhode Island CDL Permit Test - Air Brakes
(From the 2020 Rhode Island 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 Rhode Island 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.
If the safety relief valve in the air brake system releases air:
2.
During an applied leakage test, the maximum leakage rate for a triple combination vehicle is ____ in a minute.
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2 psi
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4 psi
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6 psi
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3.
The ____ are activated by an electric switch that is triggered by the brake pedal.
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Headlights
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Turn signals
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Brake lights
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4.
Braking mechanisms are located inside:
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The fifth wheel.
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A brake drum.
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The landing gear.
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5.
If an air compressor is belt-driven, the belt should be routinely checked to ensure that it is:
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Thin.
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Properly tightened.
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Cracked.
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6.
If using spring brakes when hauling a heavy load, a complete stop will:
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Be impossible.
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Take a long time.
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Take a short amount of time.
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