AIR BRAKES CDL PRACTICE TEST - SOUTH DAKOTA
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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 South Dakota CDL knowledge test. The SD 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 South Dakota CDL Manual. Take this SD CDL practice test now to prepare for the actual air brakes test!
1.
To brake in a way that will keep your vehicle in a straight line and allow you to turn if it becomes necessary, you can use:
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the "controlled braking" method or the "stab braking" method.
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the "controlled braking" method.
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the "stab braking" method.
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None of the above.
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2.
If your trucks has a high center of gravity, which of the following is true for curves?
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You should slow down, as your truck can roll over at the posted speed limit for the curve.
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Reduce your speed to a crawl.
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You should travel at the posted speed limit.
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None of the above.
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3.
When the spring brakes are on, you should:
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exceed the posted speed limit.
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press the accelerator.
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pump the brakes.
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not push the brake pedal down.
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4.
Some air brake systems have an alcohol evaporator. Checking the alcohol container and filling it up as necessary:
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reduces the risk of ice in air brake valves during cold weather.
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helps you avoid wheel lock up.
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reduces the risk of having an accident due to drowsy driving.
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helps keep the engine cool, as well as lubricating it.
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5.
If the air compressor is belt-driven, you should check the air compressor drive belt before each trip. The belt should be:
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worn.
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cracked.
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tight.
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loose.
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