CDL AIR BRAKES PRACTICE TEST - NEW YORK
6.
Which of the following statements is true?
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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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There is no way that short circuits due to damaged insulation can cause a vehicle fire.
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Under-inflated tires will NOT cause a vehicle fire.
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7.
The use of brakes on a steep downgrade is:
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much more effective than the engine braking effect.
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a supplement to the braking effect of the engine.
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the main braking factor.
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dangerous, and should be avoided at all costs.
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8.
How can you tell if your vehicle is equipped with ABS?
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Look for yellow ABS malfunction lamps on the instrument panel.
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Look under the vehicle for the wheel speed sensor wires coming from the back of the brakes.
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Trailers will have yellow ABS malfunction lamps on the left side.
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All of the above.
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9.
If the safety relief valve in the air brake system releases air:
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the valve is fully operational.
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this will supply more power to the brakes.
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this will supply more power to the drive wheels.
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something is wrong.
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10.
When driving on slippery roads, you should NOT:
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go slowly.
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use the engine brake.
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watch far enough ahead to keep a steady speed.
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try to anticipate stops early.
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