CDL AIR BRAKES PRACTICE TEST - WEST VIRGINIA
16.
If air doesn't flow all the way to the back:
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the trailer will tend to swing around.
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your brakes will not work properly.
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a rollover is more likely.
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your lower fifth wheel may fall off.
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17.
If are being followed closely, you should:
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decrease your following distance.
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increase your following distance.
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change lanes quickly.
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flash your brake lights.
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18.
Under a pressurized system, the radiator cap:
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should always be cool.
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should be removed when the coolant is hot.
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should never be hot.
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should never be removed until the system has cooled.
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19.
Vehicles with air brakes require more stopping distance than vehicles with hydraulic brakes. Why?
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Stopping distance for vehicles with air brakes is made up of six different factors.
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It takes one half second or more for the air to flow through the lines to the brakes.
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Air brakes use different brake drums.
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When driving vehicles with air brakes, the average perception distance increases from 400 feet to 2200 feet.
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20.
Your truck has a dual air system. If either system is very low on pressure:
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either the front or the rear brake will not be fully operational.
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the tractor protection valve will not work properly.
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the low pressure warning signal will stop working.
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the ABS will not work properly.
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