AIR BRAKES PRACTICE TEST - NORTH DAKOTA
6.
The braking power of the spring brakes:
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is not affected by the condition of the service brakes.
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is not affected by the air pressure level.
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depends on the brakes being in adjustment.
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All of the above.
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7.
When backing a trailer, turn the wheel right to make the cab go ________ and the trailer go ________.
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right; right
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left; right
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right; left
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left; left
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8.
Front-end header boards:
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should never be used.
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protect drivers from spilled cargo.
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protect drivers from cargo in case of an accident or emergency stop.
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reduce traction.
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9.
When you make a quick lane change, the crack-the-whip effect can turn the trailer over. The crack-the-whip effect is caused by:
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worn tire tread.
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the rear trailer of a triple.
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rearward amplification.
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strong wind.
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10.
The ABS malfunction lamp on the instrument panel is:
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Yellow
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Blue
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Orange
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Red
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