ALABAMA CDL AIR BRAKES PRACTICE TEST
16.
ABS malfunction lamps are located:
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on the instrument panel.
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on the driver'door.
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under the hood.
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None of the above.
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17.
Most heavy-duty vehicles use:
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single air brake systems.
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pump-the-brake systems.
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triple air brake systems.
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dual air brake systems.
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18.
If your ABS malfunctions:
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you still have normal brake functions.
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the service brake will not work.
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the parking brakes will not work.
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you should immediately come to a complete stop.
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19.
Which of the following is NOT a way to determine if your trailer is equipped with ABS (antilock braking system)?
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The letters "ABS" are printed on the side of the steering wheel.
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Wheel speed sensor wires are coming from the back of the brakes.
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It has yellow ABS malfunction lamps.
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It was built after March 1, 1998.
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20.
When you make a quick lane change, the crack-the-whip effect can turn the trailer over. The crack-the-whip effect is caused by:
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the rear trailer of a triple.
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worn tire tread.
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rearward amplification.
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strong wind.
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