Air Brakes
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 or four answer choices. To pass, the applicant must answer at least 20 questions correctly. Test questions come from the North Carolina 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.
Number of Questions
25
Passing Score
20
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To Pass
0
Correct
0
Incorrect
0
9. The brake pedal is part of which braking system?
The parking brake system
The service brake system
The emergency brake system
The auxiliary brake system
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12. The emergency brake system uses:
Only parts of the service brake system.
Parts of both the parking and service brake systems.
Only parts of the parking brake system.
Only parts unique to the emergency brake system.
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14. Pressing and releasing a brake pedal unnecessarily can:
Release air faster than it can be replaced.
Add more air to the braking system.
Create a loud noise.
Make the brake pedal more sensitive.
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