AIR BRAKES CDL PRACTICE TEST - LOUISIANA
21.
Why should you check your mirrors regularly to know where other vehicles are around you?
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To flash the brake lights if you are being tailgated.
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To better assess your own speed.
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To know whether you can make a quick lane change in an emergency.
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To move out of their way if they want to get past.
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22.
ABS:
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is an addition to your normal brakes.
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allows you to brake harder.
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replaces your normal brakes.
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should only be used on dry roads.
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23.
A driver distraction is anything that takes your attention away from driving, such as:
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pedestrians.
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adjusting the radio.
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billboards.
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All of the above.
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24.
You supply air to the trailer brake system by:
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pulling out the trailer air supply valve.
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pushing in the trailer air supply knob.
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connecting the tractor service air line to the trailer service glad hand.
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plugging the electrical cord into the trailer.
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25.
The posted speed limit:
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may only be exceeded when driving in rural areas.
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should never be exceeded.
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should only be exceeded when passing other vehicles.
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is only a suggestion.
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