CDL AIR BRAKES PRACTICE TEST - WEST VIRGINIA
21.
The parking or emergency brakes of trucks or buses must be held on by:
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spring pressure.
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air pressure.
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hydraulic pressure.
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fluid pressure.
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22.
If your vehicle catches fire, you should pull over:
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near other vehicles.
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near trees.
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at a service station.
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in an open area.
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23.
Front-end header boards:
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should never be used.
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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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protect drivers from spilled cargo.
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24.
The most common type of brake is the:
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R-cam drum brake
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B-cam disc brake
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S-cam drum brake
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G-cam disc brake
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25.
If the low air pressure warning light comes on, you should:
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continue to drive normally.
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stop immediately.
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call for help.
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set the parking brake.
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