CDL AIR BRAKES PRACTICE TEST - ARIZONA
6.
What is the best way to test the low air pressure warning signal?
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Shut the engine off when you have enough air pressure, turn the electrical power on and step on and off the brake pedal to reduce air pressure to below 60 psi.
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pump the brakes until the air pressure drops below 45 psi.
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step on and off the brake pedal while the engine is running.
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7.
Brakes out of adjustment can cause the other brakes to:
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apply more braking power.
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overheat and fade.
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last longer.
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8.
If you are being tailgated, you should:
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try to let the other vehicle pass.
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drive on the shoulder.
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speed up.
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9.
The heavier the vehicle:
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the higher the center of gravity will be.
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the less work the brakes must do to stop it.
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the more work the brakes must do to stop it.
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10.
A tank endorsement is:
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only required when transporting gases.
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required for both liquids and gases.
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only required when transporting liquids.
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