LOUISIANA 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 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.
As part of the final air brake check, you should:
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Check air compressor governor cut-in and cut-out pressure.
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Test low pressure warning signal.
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Test air leakage rate.
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All of the above.
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2.
When driving at night, you should:
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put your own high beams on if other drivers don't put their low beams on.
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drive slowly enough to see obstacles with your headlights.
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look directly at the lights of oncoming vehicles.
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use dark lenses if possible.
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3.
When the wheels of a trailer lock up:
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the trailer will tend to swing around.
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the vehicle will gradually come to a complete stop.
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ABS will increase stopping power.
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All of the above.
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4.
If your trailer starts to skid, you should:
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accelerate slightly.
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use the trailer hand brake (if you have one) to straighten out the rig.
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keep the rear of your vehicle close to the curb.
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release the brakes to get traction back.
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5.
When driving on slippery roads, you should NOT:
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use the engine brake.
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try to anticipate stops early.
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go slowly.
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watch far enough ahead to keep a steady speed.
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