CDL AIR BRAKES PRACTICE TEST - SOUTH CAROLINA
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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 South Carolina CDL knowledge test. The SC 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 South Carolina CDL Manual. Take this SC CDL practice test now to prepare for the actual air brakes test!
1.
Do NOT use the parking brakes:
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when you leave your vehicle.
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if the brakes are very hot.
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to test that they work.
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when you park for less than two hours.
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2.
You hear a loud "bang" which sounds like a tire blowout. You should:
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inspect your tires with your mirrors.
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check the tires at the next stop.
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keep driving as normal.
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assume you
have a tire failure.
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3.
If the air pressure gets too low:
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the brakes will not work.
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ABS will help maintain vehicle control.
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you should set the parking brake.
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the brakes will lock up.
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4.
Empty trucks have the best braking. True or False?
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It depends on the truck.
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It depends on the cargo.
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True.
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False.
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5.
If the air compressor is belt-driven, you should check the air compressor drive belt before each trip. The belt should be:
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cracked.
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loose.
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tight.
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worn.
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