AK 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 Alaska CDL knowledge test. The AK 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 Alaska CDL Manual. Take this AK CDL practice test now to prepare for the actual air brakes test!
1.
The most common foundation brakes found on vehicles with air brakes are the:
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wedge brakes.
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disc brakes.
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S-cam brakes.
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2.
The air brake lag distance at 55 mph on dry pavement adds about:
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60 feet.
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75 feet.
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32 feet.
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3.
An ABS system:
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helps you avoid skids caused by over braking.
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gives you more control over the vehicle during braking.
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All of the above.
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4.
When you apply the brakes, the brake shoes and linings are pushed against:
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the supply pressure gauge.
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the S-cam.
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None of the above.
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5.
What should you do to test your vehicle's low air pressure warning signal?
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With the key in the "on" or "battery charge" position, rapidly apply and release the foot brake.
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Pump the brakes until the air pressure drops below 80 psi.
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With the engine running, put the vehicle in a forward gear and attempt to drive forward.
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