In Partnership with Huntsville-Madison County Public Library
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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 Alabama CDL knowledge test. The AL 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 Alabama CDL Manual. Take this AL CDL practice test now to prepare for the actual air brakes test!
1.
You should drain your air tanks:
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at the beginning of each trip.
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every month.
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at least once a week.
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at the end of each working day.
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2.
_________ must have a low air pressure warning signal.
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All vehicles with air brakes
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Only vehicles with air brakes built before 2015
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Vehicles with air brakes built after 2010
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Vehicles with air brakes built after 2005
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3.
If you are being tailgated, you should:
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flash your brake lights.
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speed up.
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increase your following distance.
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move to the left lane.
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4.
To prevent rollover, you should:
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drive slowly around on ramps and off ramps.
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keep the cargo as close to the ground as possible.
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go slowly around turns.
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All of the above.
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5.
The ________ brake system applies and releases the brakes when the driver uses the brake pedal during normal driving.
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anti-lock
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service
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emergency
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parking
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