MISSOURI CDL AIR BRAKES PRACTICE TEST
16.
Front brake limiting valves were used to:
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reduce your speed so further braking or shifting is not required.
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reduce the chance of the front wheels skidding on slippery surfaces.
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prevent overheating of the front tires.
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17.
While driving, you should use your mirrors to:
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check where the rear of your vehicle is while you make turns.
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know where other vehicles are around you.
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All of the above.
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18.
Stepping on and off the brake pedal several times:
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may result in dangerously thin linings.
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may cause air leaks.
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reduces the air pressure in the tanks.
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19.
Your vehicle has a dual air brake system. If one air system is very low on pressure, you should:
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bring the vehicle to a safe stop, and have the air brakes system fixed.
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reduce your speed and check the low air pressure warning signal for the other system regularly.
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call your dispatcher or supervisor for instructions.
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20.
Too little weight on the driving axles can cause:
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poor traction.
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longer stopping distances.
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mechanical damage.
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