AR CDL AIR BRAKES PRACTICE TEST
16.
On any upgrade, gravity:
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doubles your speed.
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slows you down.
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speed you up.
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doesn't affect your speed.
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17.
Some air brake systems have an alcohol evaporator. Checking the alcohol container and filling it up as necessary:
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helps keep the engine cool, as well as lubricating it.
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reduces the risk of ice in air brake valves during cold weather.
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reduces the risk of having an accident due to drowsy driving.
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helps you avoid wheel lock up.
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18.
When a tire fails, you must:
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get out and check all the tires after you have come to a stop.
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hold the steering wheel firmly.
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stay off the brake.
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All of the above.
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19.
While driving, you should use your mirrors to:
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know where other vehicles are around you.
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check where the rear of your vehicle is while you make turns.
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check the condition of the tires and cargo.
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All of the above.
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20.
The service brake applies and releases:
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the brake when you use the brake pedal during normal driving.
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the brake in an emergency situation.
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the parking brake when you use the parking brake control.
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None of the above.
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