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Maintain full-capacity air pressure in the braking systems even when the vehicle is not running.
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Maintain some air pressure in the braking systems when the vehicle is not running.
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Must be run to build enough air pressure to brakes to operate properly.
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Do not need time to build air pressure before a trip.
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12/50.
12.
Vehicles with dual air brake systems:
Answer correctly : 0 | Wrong : 0
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