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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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Vermont CDL Permit Test - Air Brakes
(From the 2021 Vermont 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 Vermont Commercial Driver’s 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.
What should happen before the air pressure in an air brake system tank falls below 55 psi?
2.
An alcohol evaporator is especially important:
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In cold weather.
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In hot weather.
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In dry weather.
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3.
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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4.
In a dual air brake system, air pressure should build from 85 to 100 psi within ____ seconds.
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25
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10
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45
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5.
Foundation brakes are used:
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Only on the front wheels of a vehicle.
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Only on the rear wheels of a vehicle.
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On each wheel of a vehicle.
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6.
Using an Anti-Lock Braking System (ABS):
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Is required in some states.
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Shortens brake response time.
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Provides additional control.
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