DELAWARE 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 Delaware CDL knowledge test. The DE 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 Delaware CDL Manual. Take this DE CDL practice test now to prepare for the actual air brakes test!
1.
When driving on slippery roads, you should NOT:
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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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use the engine brake.
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2.
When should you be particularly careful about high winds?
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When driving in winter
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When emerging from a tunnel
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When going downhill
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When driving at night
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3.
To check the slack adjusters on S-cam brakes, you should:
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park on level ground, chock the wheels and release the parking brakes, then use gloves and pull hard on each slack adjuster that you can reach.
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release the parking brake valve and begin reducing the air pressure by stepping on and off the brake pedal.
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park on level ground and fan off the air pressure by rapidly applying and releasing the foot brake.
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All of the above.
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4.
What is a dual air brake system?
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2 separate air brake systems: one system operates the left brakes, the other system operates the right brakes.
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2 separate air brake systems: one system for daytime driving, the other system for nighttime driving.
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2 separate air brake systems: one system operates the front brakes, the other system operates the rear brakes.
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None of the above.
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5.
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 "slippery" position.
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in the "neutral" position.
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in the "normal" position.
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in the "off" position.
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