CDL AIR BRAKES PRACTICE TEST - KENTUCKY
11.
When you make a quick lane change, the crack-the-whip effect can:
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improve your traction.
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turn the trailer over.
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make it harder to turn without skidding.
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the trailer to swing wide to the left.
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12.
Why must air tanks be drained?
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There might not be enough antifreeze in the system.
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Your transmission fluid may drain out.
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The alcohol evaporator might stop working.
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The water can freeze in cold weather and cause brake failure.
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13.
Which of the following is not part of the air brake system?
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Air compressor
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Air storage tanks
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Air filter
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Alcohol evaporator
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14.
Most heavy-duty vehicles use:
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dual air brake systems.
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pump-the-brake systems.
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single air brake systems.
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triple air brake systems.
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15.
Combination vehicles have __ air lines.
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2
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4
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1
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3
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