AIR BRAKES CDL PRACTICE TEST - KANSAS
21.
A low air pressure warning signal:
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is required on all vehicles without air brakes.
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is optional on vehicles with air brakes.
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is required on vehicles with air brakes.
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None of the above.
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22.
If a vehicle is equipped with ABS, when you start the engine:
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the spring brakes will come on.
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the wheels will lock up.
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the trailer emergency brakes will come on.
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the ABS indicator light on the dash should come on and then turn off.
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23.
Which of the following is NOT a warning sign of fatigue?
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Frequent blinking
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Trouble remembering the last few miles driven
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Heavy eyelids
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Driving at the speed of the traffic
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24.
With brake drums, if brakes become too hot:
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the air compressor will kick on to cool the brakes.
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the brakes may stop working.
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the brakes will supply too much power to the drive wheels.
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your ABS will malfunction.
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25.
To check the slack adjusters on S-cam brakes, you should:
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park on level ground, chock the wheels and release the parking brakes, then use gloves and pull hard on each slack adjuster that you can reach.
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park on level ground and fan off the air pressure by rapidly applying and releasing the foot brake.
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release the parking brake valve and begin reducing the air pressure by stepping on and off the brake pedal.
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All of the above.
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