AIR BRAKES CDL PRACTICE TEST - TENNESSEE
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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 Tennessee CDL knowledge test. The TN 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 Tennessee CDL Manual. Take this TN CDL practice test now to prepare for the actual air brakes test!
1.
When coupling, you should:
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make sure the sliding fifth-wheel is locked.
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make sure the trailer wheels are not chocked.
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make sure the trailer kingpin is bent.
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be aware that wrong coupling and uncoupling can be very dangerous.
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2.
When driving on slippery roads, you should NOT:
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watch far enough ahead to keep a steady speed.
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go slowly.
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try to anticipate stops early.
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use the engine brake.
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3.
When you release the brake pedal, the _____ rotates back and a spring pulls the brake shoes away from the drum.
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pressure gauge
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hydraulic brake system
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air compressor belt
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S-cam
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4.
How can you tell if your vehicle is equipped with ABS (anti-lock braking system)?
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Trucks, buses, trailers, and converter dollies built after 1998 are required to have ABS.
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ABS is required on all vehicles manufactured on or after 2000.
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There is no way to tell, ABS is still optional on all vehicle types.
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ABS is required on all vehicles manufactured on or after 2005.
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5.
Brake fade results from, and is affected by:
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excessive heat caused by using the brakes too much.
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brakes out of adjustment.
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excessive heat caused by not relying on the engine braking effect.
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All of the above.
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