CDL AIR BRAKES PRACTICE TEST - ARIZONA
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The air brakes endorsement applies to applicants who wish to drive a vehicle with air brakes in Class A, B, or C CDL. To drive a vehicle with air brakes, you must pass the air brake component of the Arizona CDL knowledge test. The AZ CDL air brakes test consists of 25 questions, and you'll need at least 20 correct answers to pass (80%). The test covers the information found in the air brakes section of the Arizona CDL Manual. Take this AZ CDL practice test now to prepare for the actual air brakes test!
1.
If you are being tailgated, you should:
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speed up.
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move to the left lane.
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increase your following distance.
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2.
The air compressor is connected to:
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the radiator.
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the transmission.
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the engine.
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3.
Some air brake systems have an alcohol evaporator. Checking the alcohol container and filling it up as necessary:
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reduces the risk of ice in air brake valves during cold weather.
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helps you avoid wheel lock up.
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helps keep the engine cool, as well as lubricating it.
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4.
Air storage tanks:
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hold compressed air for the brakes.
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use parts of the service brake systems to stop the vehicle in a brake system failure.
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pump air into the air storage tanks.
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5.
Front brake limiting valves were used to:
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prevent overheating of the front tires.
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reduce the chance of the front wheels skidding on slippery surfaces.
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reduce your speed so further braking or shifting is not required.
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