CDL AIR BRAKES PRACTICE TEST - DELAWARE
11.
You supply air to the trailer brake system by:
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plugging the electrical cord into the trailer.
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connecting the tractor service air line to the trailer service glad hand.
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pushing in the trailer air supply knob.
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pulling out the trailer air supply valve.
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12.
Parking brakes are:
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not required on buses.
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required on all vehicles.
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not required on trailers.
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not required on commercial vehicles with air brakes.
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13.
A driver distraction is anything that takes your attention away from driving, such as:
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adjusting the radio.
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billboards.
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pedestrians.
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All of the above.
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14.
What factors can cause brakes to fade?
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Slippery surfaces and shaded areas.
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Gravel and tar.
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Dirt roads and in unpaved yards.
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Excessive heat and brakes out of adjustment.
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15.
If a load is 10 feet long, the minimum number of tie-downs required is:
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3
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1
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2
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4
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