CDL AIR BRAKES PRACTICE TEST - MISSISSIPPI
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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 Mississippi CDL knowledge test. The MS 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 Mississippi CDL Manual. Take this MS CDL practice test now to prepare for the actual air brakes test!
1.
Which of the following is not part of the air brake system?
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Air compressor
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Air storage tanks
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Air filter
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Alcohol evaporator
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2.
Passive railroad crossings:
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have at least one traffic control device.
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should never be crossed using a CMV.
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do not have traffic control devices.
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usually have a person directing traffic.
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3.
Why must air tanks be drained?
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There might not be enough antifreeze in the system.
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Your transmission fluid may drain out.
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The water can freeze in cold weather and cause brake failure.
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The alcohol evaporator might stop working.
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4.
If you are being tailgated, you should:
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flash your brake lights.
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increase your following distance.
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speed up.
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move to the left lane.
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5.
The alcohol evaporator:
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eliminates the need for daily air tank drainage.
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shows how much air pressure you are applying to the brakes.
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ensures the coolant temperature gauge remains in the normal range.
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helps to reduce the risk of ice in air brake valves and other parts in cold weather.
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