SOUTH CAROLINA CDL AIR BRAKES PRACTICE TEST
11.
Tar in the road pavement rising to the road surface in very hot weather:
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might get in your engine.
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is very sticky and will slow down your vehicle.
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does not affect the road surface or driving conditions.
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causes the road to become very slippery.
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12.
The low pressure warning signal will generally activate when the air pressure falls between:
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30–35 psi.
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80–85 psi.
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55–75 psi.
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85–100 psi.
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13.
If your vehicle has dual parking control valves, you can use pressure from a separate tank to:
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release the spring brakes so you can move the vehicle in an emergency.
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balance the service brakes while you are parked.
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park better.
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None of the above.
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14.
Brake fade results from:
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excessive speeding.
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excessive use of the service brakes.
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excessive smoke.
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excessive wear.
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15.
If you must stop on a one-way or divided highway, place your warning devices:
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50 feet, 100 feet, and 150 feet toward the approaching traffic.
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10 feet, 100 feet, and 200 feet toward the approaching traffic.
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100 feet, 200 feet, and 300 feet toward the approaching traffic.
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10 feet, 50 feet, and 150 feet toward the approaching traffic.
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