AIR BRAKES CDL PRACTICE TEST - VIRGINIA
6.
Before driving a vehicle with a dual brake brake system, the driver should:
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pump the brake pedal 10 times to build pressure.
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wait at least 10 minutes before driving.
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allow time for the air compressor to build up a minimum of 100 psi pressure in both the primary and secondary systems.
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7.
Your truck has a dual air system. If either system is very low on pressure:
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either the front or the rear brake will not be fully operational.
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the low pressure warning signal will stop working.
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the tractor protection valve will not work properly.
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8.
When meeting an oncoming vehicle at night, if the other driver does not put their low beams on, you should:
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look slightly to the right to avoid looking directly at the lights of the oncoming vehicle.
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slow down and look straight ahead in your lane.
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"get back at the other driver" by putting your own high beams on.
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9.
Empty trucks:
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are higher than loaded trucks.
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require greater stopping distances.
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All of the above.
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10.
_________ must have a low air pressure warning signal.
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All vehicles with air brakes
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Vehicles with air brakes built after 2010
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Vehicles with air brakes built after 2005
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