CDL AIR BRAKES PRACTICE TEST - COLORADO
6.
After a tire has been changed, the driver should stop a short while later to:
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check tread separation.
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decrease tire pressure.
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deflate the tire to 10 psi.
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check the tightness of the nuts.
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7.
On any upgrade, gravity:
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doubles your speed.
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doesn't affect your speed.
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slows you down.
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speed you up.
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8.
On front tires, tread should be at least:
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2/32 inch
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1/16 inch
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4/16 inch
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4/32 inch
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9.
To perform an applied leakage test, the vehicle’s air pressure should be built up to maximum pressure. Check the air gauge to see that the air pressure should drop no more than:
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2 psi for single vehicles and 5 psi for a combination of 2 vehicles.
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5 psi for single vehicles and 6 psi for a combination of 2 vehicles.
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3 psi for single vehicles and 4 psi for a combination of 2 vehicles.
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1 psi for single vehicles and 3 psi for a combination of 2 vehicles.
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10.
To avoid becoming a distracted driver you should:
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eat and drink while you drive.
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not turn off all communication devices.
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not engage in complex conversations with others.
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adjust all vehicle controls and mirrors while driving.
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