CDL AIR BRAKES PRACTICE TEST - HAWAII
11.
If you are being tailgated, you should:
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speed up.
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move to the left lane.
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increase your following distance.
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12.
To test the air leakage rate, with a fully-charged air system you should ____________ and time the air pressure drop.
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put alcohol into the air system, run the engine at a fast idle
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release the parking brake, leave the engine running
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turn off the engine, release the parking brake
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13.
Some air brake systems have an alcohol evaporator. Checking the alcohol container and filling it up as necessary:
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helps you avoid wheel lock up.
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reduces the risk of ice in air brake valves during cold weather.
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helps keep the engine cool, as well as lubricating it.
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14.
ABS brakes help you:
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avoid wheel lock up.
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downshift before starting down a hill.
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lock up the wheels in an emergency stop.
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15.
When driving on long and/or steep downgrades, to select an appropriate safe speed you should consider:
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the road conditions.
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the total weight of the vehicle and cargo.
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All of the above.
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