AIR BRAKES CDL PRACTICE TEST - NEW HAMPSHIRE
11.
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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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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12.
Passive railroad crossings:
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should never be crossed using a CMV.
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usually have a person directing traffic.
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have at least one traffic control device.
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do not have traffic control devices.
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13.
By pushing the trailer air supply control knob in, you:
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keeps air in the tractor or truck brake system.
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shut the air off and put on the trailer emergency brakes.
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supply the trailer with air.
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supply the tires with air.
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14.
A tank endorsement is:
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only required when transporting gases.
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only required when transporting liquids.
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required for both liquids and gases.
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not required when transporting hazardous materials.
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15.
Do NOT use the parking brakes:
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if the brakes are very hot.
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to test that they work.
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when you leave your vehicle.
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when you park for less than two hours.
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