WV CDL AIR BRAKES PRACTICE TEST
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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 West Virginia CDL knowledge test. The WV 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 West Virginia CDL Manual. Take this WV CDL practice test now to prepare for the actual air brakes test!
1.
Spring brakes are usually held back by:
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modulating control valves.
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the antilock braking system.
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air pressure.
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the brake pedal.
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2.
If a vehicle is equipped with ABS, when you start the engine:
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the spring brakes will come on.
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the trailer emergency brakes will come on.
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the ABS indicator light on the dash should come on and then turn off.
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the wheels will lock up.
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3.
If your truck has automatic transmission, you should downshift:
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after entering a curve.
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whenever road conditions allow.
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when you need to accelerate.
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when going down grades.
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4.
In a vehicle with a dual air brake system:
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both systems typically operate the regular brakes on the rear axle.
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each system has its own air tanks.
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one system supplies air to the trailer.
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All of the above.
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5.
Empty trucks require _____ stopping distances because empty vehicles have ______ traction.
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less; less
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greater; more
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less; more
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greater; less
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