CDL AIR BRAKES PRACTICE TEST - PENNSYLVANIA
16.
Which of the following is not a way to know when to change gears?
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Use road speed (mph)
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Watch your tachometer
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Use engine speed (rpm)
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Check that the pressure gauge shows normal oil pressure
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17.
In vehicles with air brakes, water and compressor oil in the bottom of the air tank:
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should not be removed.
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should be added regularly.
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should be drained completely.
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None of the above.
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18.
You hear a loud "bang" which sounds like a tire blowout. You should:
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check the tires at the next stop.
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assume you
have a tire failure.
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inspect your tires with your mirrors.
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keep driving as normal.
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19.
Empty trucks:
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have less traction.
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are higher than loaded trucks.
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require greater stopping distances.
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All of the above.
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20.
Having ABS on only the trailer:
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still gives you more control over your vehicle during braking.
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is very dangerous.
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makes the trailer more likely to swing out.
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makes the trailer more likely to roll over.
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