ILLINOIS CDL AIR BRAKES PRACTICE TEST
11.
Excessive use of the service brakes results in overheating and leads to:
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low air pressure.
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poor traction.
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reduction of the brake drums.
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brake fade.
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12.
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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13.
When the wheels of a trailer lock up:
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the vehicle will gradually come to a complete stop.
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ABS will increase stopping power.
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the trailer will tend to swing around.
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All of the above.
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14.
A tank endorsement is:
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only required when transporting liquids.
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only required when transporting gases.
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required for both liquids and gases.
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not required when transporting hazardous materials.
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15.
What factors can cause brakes to fade?
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Excessive heat and brakes out of adjustment.
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Slippery surfaces and shaded areas.
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Gravel and tar.
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Dirt roads and in unpaved yards.
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