AIR BRAKES CDL PRACTICE TEST - WYOMING
11.
One way to prevent hydroplaning is to:
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have less than 4/32 inch tread depth in every major groove on front tires.
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make sure you have enough tread on your tires.
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use the controlled braking method.
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take curves at higher speeds.
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12.
Truck tractors with air brakes built after March 1, 1997, are required to be equipped with:
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a rear backup camera.
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anti-lock brakes.
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hydraulic brakes.
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GPS
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13.
The emergency brake system:
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uses the service brake to stop the vehicle in the event of a parking brake system failure.
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uses the parking brake to stop the vehicle in the event of a brake system failure.
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uses parts of the service and parking brake systems to stop the vehicle in the event of a brake system failure.
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None of the above.
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14.
On any upgrade, gravity:
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doubles your speed.
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speed you up.
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doesn't affect your speed.
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slows you down.
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15.
When the air system is fully-charged, the air loss rate for a single vehicle with the engine off should be less than:
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2 psi in one minute.
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3 psi in one minute.
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4 psi in one minute.
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2 psi in 30 seconds.
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