CDL AIR BRAKES PRACTICE TEST - VIRGINIA
16.
The safety valve is usually set to open at:
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200 psi.
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150 psi.
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100 psi.
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17.
How can you tell if your vehicle is equipped with ABS?
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Look for yellow ABS malfunction lamps on the instrument panel.
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Trailers will have yellow ABS malfunction lamps on the left side.
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All of the above.
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18.
If you get stuck on railroad tracks, you should:
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have a helper push your vehicle.
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stay in the vehicle and call for help.
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get out of the vehicle and away from the tracks.
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19.
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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20.
The wig wag is:
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a low air pressure warning system.
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a type of rollover.
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a noise reduction mechanism.
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