CDL AIR BRAKES PRACTICE TEST - DISTRICT OF COLUMBIA
11.
To use the controlled braking method in an emergency, you should:
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apply your brakes all the way, and release the brakes when the wheels lock up.
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pump the brake pedal 3 times.
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apply the brakes as hard as you can without locking the wheels.
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apply the brakes when the wheels lock up.
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12.
The air storage tanks:
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are connected to the engine through gears or a v-belt.
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protects the tank and the rest of the system from too much pressure.
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are used to hold compressed air.
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stop the compressor from pumping air.
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13.
The air tanks should be drained completely to remove:
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carbon monoxide.
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air.
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water and oil.
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the radiator cap.
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14.
Front wheel braking is good:
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only in good weather.
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under all conditions.
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Never.
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only in wet conditions.
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15.
You should check air pressure and temperature gauges:
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at the end of each trip.
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every time you stop.
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at the beginning of each trip.
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as often as is practical.
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