MO CDL AIR BRAKES PRACTICE TEST
16.
Hydroplaning is more likely if:
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tire tread is worn.
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tire pressure is low.
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All of the above.
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17.
In vehicles with air brakes, the brake pedal:
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let the
air out of the spring brakes.
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controls the air pressure applied to the brakes.
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tells you how much pressure is in
the air tanks.
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18.
Air tanks must be drained completely to:
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pump water and compressor oil into the tanks.
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remove all the air.
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remove all moisture and oil.
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19.
To prevent rollover, you should:
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keep the cargo as close to the ground as possible.
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place the cargo near the rear of the trailer.
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put the lightest parts of the cargo under the heaviest parts.
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20.
The ABS malfunction lamp on the instrument panel is:
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Red
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Yellow
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Orange
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