AIR BRAKES CDL PRACTICE TEST - ARKANSAS
21.
You are driving on a steep downgrade. If your safe speed is 35 mph, you should apply the brakes when your speed reaches:
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30 mph
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25 mph
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45 mph
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35 mph
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22.
Before starting down a hill, you should:
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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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apply the brakes hard.
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slow down and shift to a lower gear.
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23.
If the spring brakes do not release when you push the trailer air supply control, you should:
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check the electrical cables.
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check the air line connections.
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rev or
lug the engine.
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pump the brakes.
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24.
If you get stuck on railroad tracks, you should:
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stay in the vehicle and call for help.
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have a helper push your vehicle.
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check the engine compartment quickly.
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get out of the vehicle and away from the tracks.
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25.
Antifreeze:
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helps the engine only under hot conditions.
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helps the engine only when the temperature is below freezing.
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helps the engine under hot conditions as well as cold conditions.
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doesn't help the engine in any way.
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