WISCONSIN CDL AIR BRAKES PRACTICE TEST
21.
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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use the controlled braking method.
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make sure you have enough tread on your tires.
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take curves at higher speeds.
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22.
When the spring brakes are on, you should:
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press the accelerator.
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exceed the posted speed limit.
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pump the brakes.
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not push the brake pedal down.
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23.
The safety relief valve is usually set to open at ____ psi.
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100
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75
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150
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50
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24.
To avoid becoming a distracted driver you should:
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not engage in complex conversations with others.
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eat and drink while you drive.
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not turn off all communication devices.
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adjust all vehicle controls and mirrors while driving.
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25.
If your vehicle is hydroplaning, you should:
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release the accelerator and push in the clutch.
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accelerate to get through the water as quickly as possible.
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use the brakes to slow down.
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None of the above.
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