AIR BRAKES PRACTICE TEST - ALABAMA
21.
The parking or emergency brakes of trucks or buses must be held on by:
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hydraulic pressure.
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fluid pressure.
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spring pressure.
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air pressure.
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22.
How do you test hydraulic brakes for leaks?
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Pump the brake pedal three times, then apply firm pressure to the pedal and hold for five seconds. The pedal should not move.
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Pump the brake pedal ten times and see if it holds.
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Pull forward against parking brake to make sure the hydraulic brakes holds.
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None of the above.
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23.
What should you do to correct a drive-wheel braking skid?
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Fully apply the brakes, turn the steering wheel quickly, push in the clutch, and countersteer.
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Turn in the same direction as the skid.
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Stop braking, turn the steering wheel quickly, push in the clutch, and countersteer.
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None of the above.
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24.
Having ABS on only the trailer:
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is very dangerous.
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makes the trailer more likely to roll over.
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makes the trailer more likely to swing out.
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still gives you more control over your vehicle during braking.
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25.
When confronted by an aggressive driver, you should:
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call the police, if you have a cell phone and can do it safely.
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make every attempt to get out of their way.
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avoid eye contact.
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All of the above.
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