AIR BRAKES PRACTICE TEST - LOUISIANA
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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 Louisiana CDL knowledge test. The LA 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 Louisiana CDL Manual. Take this LA CDL practice test now to prepare for the actual air brakes test!
1.
One way to prevent hydroplaning is to:
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use the controlled braking method.
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make sure you have enough tread on your tires.
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have less than 4/32 inch tread depth in every major groove on front tires.
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take curves at higher speeds.
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2.
You should always try to back toward the driver's side because:
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backing toward the left side is more dangerous.
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you can watch the rear of your vehicle out the side window.
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you can more easily correct any steering errors.
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None of the above.
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3.
Spring brakes:
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apply when air pressure leaves the brake chamber and release when air pressure builds up in the chamber.
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are not designed to work in an emergency when your service brakes fail.
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are air applied like service brakes.
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All of the above.
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4.
If your vehicle is equipped with a front brake limiting valve, to ensure normal stopping power make sure the control is:
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in the "normal" position.
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in the "off" position.
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in the "slippery" position.
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in the "neutral" position.
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5.
When backing, you should:
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use the mirrors on both sides.
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back and turn toward the right side whenever possible.
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only use mirror on the driver's side.
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back quickly.
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