AIR BRAKES PRACTICE TEST - WEST VIRGINIA
11.
Brake drums or discs must not have cracks longer than ____ the width of the friction area.
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1/4
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1/3
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1/5
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1/2
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12.
A tank endorsement is:
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required for both liquids and gases.
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not required when transporting hazardous materials.
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only required when transporting liquids.
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only required when transporting gases.
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13.
If the air tanks are not drained:
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your speed must be reduced to 5 MPH below your “safe” speed.
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the air pressure in the tanks is reduced.
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the water can freeze in cold
weather and cause brake failure.
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the spring brakes will come on.
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14.
If your trailer starts to skid, you should:
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release the brakes to get traction back.
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keep the rear of your vehicle close to the curb.
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accelerate slightly.
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use the trailer hand brake (if you have one) to straighten out the rig.
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15.
An alcohol evaporator is important during:
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hot weather.
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dry weather.
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cold weather.
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windy weather.
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