AIR BRAKES PRACTICE TEST - MISSOURI
6.
If you must make an emergency stop, you should:
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apply the brakes as hard as you can to lock them.
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use the hand brake before the brake pedal.
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brake in a way that will keep your vehicle in a straight line.
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7.
Tar in the road pavement rising to the road surface in very hot weather:
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causes the road to become very slippery.
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does not affect the road surface or driving conditions.
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is very sticky and will slow down your vehicle.
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8.
Which of the following is a reason why air tanks must be drained?
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The governor may stop the compressor from pumping air.
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Your brakes may fail due to the water freezing.
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Your battery fluid may drain out.
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9.
How do you check that spring brakes come on automatically?
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On a tractor-trailer combination vehicle, continue to step on and off the brake pedal until the tractor protection valve and the parking brake valve close.
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Continue to step on and off the brake pedal until the air pressure falls to the manufacturer’s specification.
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All of the above.
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10.
The alcohol evaporator:
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ensures the coolant temperature gauge remains in the normal range.
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helps to reduce the risk of ice in air brake valves and other parts in cold weather.
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eliminates the need for daily air tank drainage.
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