Arkansas CDL Permit Test - Air Brakes

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 or four answer choices. To pass, the applicant must answer at least 20 questions correctly. Test questions come from the Arkansas 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.
You have made error so far
Passing grade —
5 or fewer errors
Air tank drains:
Allow rain water to enter the tank.
Are used to drain water and compressor oil from the air tank.
Should never be opened.
Must remain open during transit.
All air tanks must include:
A check valve.
A lock.
A trap door.
A warning sticker.
Vehicles equipped with Anti-Lock Braking Systems (ABS) have ____ malfunction lamps to indicate when the ABS is not working.
Brakes may get out of adjustment:
If they are too hot.
In colder weather.
If they are used.
If they get wet.
The most common type of foundation brake used is the:
S-cam drum brake.
C-cam drum brake.
G-cam disc brake.
P-cam disc brake.
The air storage tanks:
Hold only enough air for one braking cycle.
Hold enough air for brakes to be used several times if the compressor stops working.
Do not hold air unless there is an emergency.
Hold enough air for more than 1,000 braking cycles.
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