VERMONT CDL AIR BRAKES PRACTICE TEST
11.
When the air system is fully-charged, the air loss rate for a single vehicle with the engine off should be less than:
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3 psi in one minute.
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2 psi in one minute.
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2 psi in 30 seconds.
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12.
You must take the CDL skills tests in the type of vehicle for which you wish to be licensed. If your test vehicle does not have air brakes:
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you will be restricted to driving vehicles without air brakes.
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you'll need to take another knowledge test about air brakes.
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you'll have to immediately retake your test using another vehicle.
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13.
You should NOT use the parking brakes if:
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the brakes are cold.
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the brakes are too dry.
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the brakes are very hot.
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14.
Empty trucks require _____ stopping distances because empty vehicles have ______ traction.
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less; more
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greater; more
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greater; less
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15.
Which of the following is TRUE about dual air brake systems?
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most heavy-duty vehicles use dual air brake systems.
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Each brake system has its own air tanks, hoses and lines.
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All of the above.
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