AIR BRAKES PRACTICE TEST - NEVADA
6.
In air brake vehicles, the parking brake should be used:
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any time you park (with a few exceptions).
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when the spring brakes are on.
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as little as possible.
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to hold your speed while going downhill.
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7.
In vehicles with air brakes, the brake pedal:
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controls the air pressure applied to the brakes.
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let the
air out of the spring brakes.
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tells you how much pressure is in
the air tanks.
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pumps air into the air storage
tanks.
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8.
The air compressor stops pumping air into the air storage tanks when air tank pressure rises to around:
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125 psi.
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450 psi.
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100 psi.
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250 psi.
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9.
If the air tanks are not drained:
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the water can freeze in cold
weather and cause brake failure.
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your speed must be reduced to 5 MPH below your “safe” speed.
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the spring brakes will come on.
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the air pressure in the tanks is reduced.
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10.
Parking brakes are:
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not required on buses.
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not required on commercial vehicles with air brakes.
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required on all vehicles.
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not required on trailers.
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