VA CDL AIR BRAKES PRACTICE TEST
16.
Air brakes:
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should be used only when driving on wet roads.
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are prohibited on larger vehicles.
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are an effective way to stop large and heavy vehicles.
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17.
A driver distraction is anything that takes your attention away from driving, such as:
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adjusting the radio.
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pedestrians.
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All of the above.
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18.
You should drain the air tanks completely. If water and oil collect in the air tanks:
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your brakes could heat up.
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your brakes could fail.
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your brakes could become hard to press.
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19.
To brake in a way that will keep your vehicle in a straight line and allow you to turn if it becomes necessary, you can use:
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the "controlled braking" method or the "stab braking" method.
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the "controlled braking" method.
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the "stab braking" method.
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20.
How do you check that spring brakes come on automatically?
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Continue to step on and off the brake pedal until the air pressure falls to the manufacturer’s specification.
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On a tractor-trailer combination vehicle, continue to step on and off the brake pedal until the tractor protection valve and the parking brake valve close.
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All of the above.
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