UTAH CDL AIR BRAKES PRACTICE TEST
21.
You are going down a steep grade. Once the vehicle is in the proper low gear, you should brake just hard enough to feel a slowdown, and then release the brakes when your speed has been reduced to ____ below your safe speed.
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5 mph
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15 mph
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10 mph
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20 mph
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22.
What factors can cause brakes to fade or fail?
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Not pressing the brake pedal hard enough.
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Going too slow.
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Overheating, low air pressure or water in the air tanks.
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Not taking your foot off the accelerator.
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23.
Most heavy duty vehicles use ___ air brake systems for safety.
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reduced
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triple
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single
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dual
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24.
Which of the following is NOT a warning sign of fatigue?
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Driving at the speed of the traffic
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Trouble remembering the last few miles driven
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Heavy eyelids
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Frequent blinking
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25.
Some air brake systems have an alcohol evaporator to:
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prevent ice from forming in the brake system.
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reduce the danger of slipping.
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force the brake shoes away from one another.
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reduce the stopping power of the vehicle.
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