CDL HAZMAT PRACTICE TEST WISCONSIN
11.
Class 2 hazardous materials include:
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Flammable gases
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Corrosive materials
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Radioactive materials
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Poison
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12.
Air brakes use ________ to make the brakes work.
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compressed gases
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compressed oil
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compressed gas cylinders
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compressed air
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13.
You should flash your brake lights to warn drivers behind you when:
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you see you'll need to slow down.
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you see a hazard that will require slowing down.
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you see a bus stops in the roadway ahead to unload passengers.
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All of the above.
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14.
Which of the following statements about retarders is NOT correct?
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You should turn the retarder off whenever the road is wet, icy, or snow covered.
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Retarders help slow a vehicle, reducing the need for using brakes.
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Retarders help you avoid skids.
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Retarders reduce reduce brake wear.
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15.
Placards identifying hazardous materials must be placed:
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inside the cab.
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on the outside of the vehicle.
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inside the trailer.
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All of the above.
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16.
If your brakes fail on a steep mountain downgrade, you should:
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use an escape ramp if it is available.
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go right if the shoulder is clear.
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change lanes after making sure there is enough room.
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leave the road immediately.
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17.
You had to drive onto the right shoulder to avoid a crash. You are now driving at 40 mph on the shoulder. How should you move back onto the pavement?
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Keep moving at the present speed and steer very gently back onto the pavement.
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Brake hard to slow the vehicle, then steer sharply onto the pavement.
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If the shoulder is clear, stay on it until your vehicle has come to a stop, then move back onto the pavement when it is safe.
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None of the above.
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18.
If the letter "G" appears in Column 1 of the Hazardous Materials Table, the description must also include:
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the hazard class or division.
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the shipper's name.
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the technical name of the HazMat.
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the source of the HazMat.
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19.
When you discover a fire, if the trailer doors are hot you should not open them because:
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the temperature of the trailer should not be changed in any way.
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you should use the fire extinguisher on the door.
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with air many fires do less damage.
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opening the doors lets air in and may make the fire flare up.
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20.
If corrosive materials leak during transportation, the parts of the vehicle exposed to corrosives must:
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be left to air dry.
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be washed with oil.
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be washed with water.
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be washed with acid.
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