LA CDL AIR BRAKES PRACTICE TEST
11.
Which of the following is not a way to know when to change gears?
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Check that the pressure gauge shows normal oil pressure
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Use road speed (mph)
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Use engine speed (rpm)
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Watch your tachometer
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12.
If your truck has automatic transmission, you should downshift:
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when going down grades.
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when you need to accelerate.
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after entering a curve.
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whenever road conditions allow.
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13.
A passive railroad crossing is one that:
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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 a traffic control device installed at the crossing to regulate traffic.
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has at least two traffic control devices installed at the crossing to regulate traffic.
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does not have any type of traffic control device.
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14.
ABS:
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makes it easier to turn.
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makes it easier to break.
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helps you avoid wheel lock up.
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allows the wheels to lock up.
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15.
Which of the following is NOT part of the drum brake?
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Brake drum
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Axle
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Return spring
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Safety valve
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