DE CDL AIR BRAKES PRACTICE TEST
6.
Your mirrors should be adjusted so that:
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a part of the vehicle is visible in the mirror.
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more than half of the mirror shows the vehicle.
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the rear of the vehicle is visible in the mirror.
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no part of the vehicle is visible in the mirror.
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7.
Front brake limiting valves were used to:
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prevent overheating of the front tires.
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reduce the chance of the front wheels skidding on slippery surfaces.
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reduce exhaust emissions.
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reduce your speed so further braking or shifting is not required.
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8.
If your ABS malfunctions:
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the parking brakes will not work.
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you still have normal brake functions.
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the service brake will not work.
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you should immediately come to a complete stop.
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9.
If you are being tailgated, you should:
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avoid quick changes.
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avoid tricks like turning on your taillights or flashing your brake lights.
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increase your following distance.
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All of the above.
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10.
When you push the brake pedal down, air brakes work:
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immediately.
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after a short delay.
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after about 15 seconds.
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only when ABS is working.
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