ID CDL AIR BRAKES PRACTICE TEST
11.
If your vehicle is equipped with a front brake limiting valve, to ensure normal stopping power make sure the control is:
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in the "neutral" position.
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in the "normal" position.
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in the "slippery" position.
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12.
Why must air tanks be drained?
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Water and
oil reduce the air pressure.
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Water can freeze in cold weather and cause brake failure.
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To keep from fouling the air compressor oil.
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13.
Foundation brakes are used:
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at each wheel.
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only with the front wheels.
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only with the right wheels.
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14.
The space under a heavily loaded vehicle can be very small. This can cause problems:
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on dirt roads.
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when crossing railroad tracks.
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All of the above.
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15.
When the spring brakes are on, you should:
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not push the brake pedal down.
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pump the brakes.
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press the accelerator.
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