MINNESOTA CDL AIR BRAKES PRACTICE TEST
16.
The supply pressure gauges tell you how much air pressure:
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is in the air brakes.
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you are applying to the brakes.
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is going to the brake chambers.
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is in the air tanks.
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17.
In vehicles with air brakes, the brake pedal:
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pumps air into the air storage
tanks.
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tells you how much pressure is in
the air tanks.
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let the
air out of the spring brakes.
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controls the air pressure applied to the brakes.
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18.
Passive railroad crossings:
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do not have traffic control devices.
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have at least one traffic control device.
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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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19.
If your vehicle is hydroplaning, you should:
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release the accelerator and push in the clutch.
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use the brakes to slow down.
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accelerate to get through the water as quickly as possible.
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None of the above.
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20.
Older trailers do not have spring brakes. If the air supply leaks away:
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the ABS won't work properly.
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there will be no emergency brakes.
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the trailer will stop normally.
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All of the above.
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