AIR BRAKES PRACTICE TEST - DELAWARE
16.
Do NOT use the parking brakes:
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when you leave your vehicle.
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if the brakes are very hot.
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when you park for less than two hours.
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to test that they work.
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17.
Excessive use of the service brakes results in overheating. Too much heat can:
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cause the brakes to squeak.
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cause the brakes apply unevenly.
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make the brakes stop working.
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cause the brakes to grab.
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18.
A passive railroad crossing is one that:
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has a traffic control device installed at the crossing to regulate traffic.
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does not have any type of traffic control device.
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requires you to stop and wait until the traffic control device installed at the crossing tells you to proceed.
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has at least two traffic control devices installed at the crossing to regulate traffic.
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19.
Which of the following statements is true?
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There is no way that short circuits due to damaged insulation can cause a vehicle fire.
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Poor cargo ventilation is a common cause of fire.
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Carrying a properly charged and rated fire extinguisher will help prevent fires.
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Under-inflated tires will NOT cause a vehicle fire.
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20.
Combination vehicles have __ air lines.
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3
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4
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2
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1
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