AIR BRAKES PRACTICE TEST - OKLAHOMA
16.
Most heavy vehicles require ________ change gears.
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double clutching
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double shifting
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single clutching
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17.
When the spring brakes are on, you should:
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pump the brakes.
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press the accelerator.
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not push the brake pedal down.
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18.
When the air pressure is built up to governor cutoff, the air leakage rate for combination vehicles with the engine off and the foot brake fully applied should be less than_____ in one minute.
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2 psi
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3 psi
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4 psi
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19.
If you are being tailgated, you should:
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drive on the shoulder.
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speed up.
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try to let the other vehicle pass.
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20.
Your mirrors should be adjusted so that:
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a part of the vehicle is visible in the mirror.
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the rear of the vehicle is visible in the mirror.
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no part of the vehicle is visible in the mirror.
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