NC CDL AIR BRAKES PRACTICE TEST
21.
If your vehicle catches fire, you should pull over:
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near trees.
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in an open area.
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near other vehicles.
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at a service station.
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22.
If your truck has automatic transmission, you should downshift:
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when you need to accelerate.
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after entering a curve.
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when going down grades.
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whenever road conditions allow.
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23.
If you must drive through a deep puddle you should:
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speed up to get through the puddle as quickly as possible.
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start slowly and Speed up smoothly and gradually so the vehicle does not jerk.
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apply the brakes until your speed reaches 40 mph.
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slow down and place transmission in a low gear.
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24.
Air brakes:
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should be used only when driving on wet roads.
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are an effective way to stop large and heavy vehicles.
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are prohibited on larger vehicles.
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can improve fuel efficiency.
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25.
If your vehicle has dual parking control valves, you can use pressure from a separate tank to:
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park better.
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release the spring brakes so you can move the vehicle in an emergency.
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balance the service brakes while you are parked.
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None of the above.
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