CDL AIR BRAKES PRACTICE TEST - INDIANA
6.
If your vehicle catches fire, you should pull over:
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near other vehicles.
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near trees.
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in an open area.
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at a service station.
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7.
Service brakes should:
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only be checked by a mechanic.
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be checked before each trip.
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always be checked before applying the brakes.
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All of the above.
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8.
After supplying air to the trailer brake system, you should check the brake system for crossed air lines by:
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shutting the engine off so you can hear the brakes.
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checking the air brake system pressure gauge for signs of major air loss.
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applying and releasing the trailer brakes and listening for the sound of trailer brakes.
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All of the above.
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9.
If the air tanks are not drained:
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the air pressure in the tanks is reduced.
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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 water can freeze in cold
weather and cause brake failure.
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10.
Which of the following is not a way to know when to change gears?
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Use engine speed (rpm)
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Check that the pressure gauge shows normal oil pressure
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Use road speed (mph)
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Watch your tachometer
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