KENTUCKY CDL AIR BRAKES PRACTICE TEST
21.
You are driving a vehicle with air brakes when the low air pressure warning light and buzzer come on. You should:
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activate your hazard lights and drive to the nearest place where you can stop.
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pull off the road and stop immediately.
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slow down and test your brakes.
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apply the brakes as hard as you can.
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22.
When you use your mirrors while driving on the road, you should:
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only use the driver's side mirror.
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check them quickly.
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stare for a long time at the mirror.
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avoid checking them regularly.
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23.
With air brake vehicles, you should use the parking brakes:
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as little as possible.
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only during the vehicle inspection test.
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whenever you leave the vehicle unattended.
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only if your vehicle is equipped with ABS.
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24.
Which of the following is TRUE about dual air brake systems?
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Each brake system has its own air tanks, hoses and lines.
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most heavy-duty vehicles use dual air brake systems.
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A dual air brake system has 2 separate air brake systems.
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All of the above.
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25.
When you pull hard on a slack adjuster and it moves more than about _____ where the push rod attaches to it, the slack adjuster probably needs adjustment.
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1/2 inch
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2 inches
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1/4 inch
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1 inch
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