CDL AIR BRAKES PRACTICE TEST - NEBRASKA
21.
The ABS malfunction lamp on the instrument panel is:
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Red
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Yellow
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Blue
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Orange
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22.
In a dual air brake system, if one air system is very low on pressure:
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either the front or rear brakes will not be operating fully.
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you should drive and brake as you always have.
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the effect won't be noticeable for the first 50 miles.
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you should pump the brakes to restore pressure.
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23.
Truck tractors with air brakes built after March 1, 1997, are required to be equipped with:
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hydraulic brakes.
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anti-lock brakes.
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GPS
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a rear backup camera.
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24.
Brake lag is:
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the distance your vehicle will continue to travel, in ideal conditions, before you hit the brakes.
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the distance your vehicle will travel, in ideal conditions, while you are braking.
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the time required for the air brakes to work after the brake pedal is pushed.
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the amount of air pressure required to stop the vehicle.
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25.
Before starting down a hill, you should:
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apply the brakes hard.
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slow down and shift to a lower gear.
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look for an escape route.
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release the accelerator and shift to Neutral at the same time.
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