CDL AIR BRAKES PRACTICE TEST - FLORIDA
11.
When driving a 60 foot truck at 35 mph in ideal conditions, you should keep at least _______ of space in front of you.
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6 seconds
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12 seconds
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5 seconds
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4 seconds
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12.
If you must make an emergency stop, you should:
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use the hand brake before the brake pedal.
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brake in a way that will keep your vehicle in a straight line.
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apply the brakes as hard as you can to lock them.
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None of the above.
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13.
The safety valve is usually set to open at:
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75 psi.
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150 psi.
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200 psi.
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100 psi.
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14.
With the air pressure built up to governor cutoff, the maximum leakage rates per minute are ___ psi for single vehicles and ___ psi for a combination of 2 vehicles.
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5; 6
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3; 2
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3; 4
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4; 5
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15.
Emergency brakes must be held on by:
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hydraulic pressure.
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mechanical force.
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dynamic pressure.
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air pressure.
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