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1.
If you smell exhaust fumes in the cab, you should:
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wait for the next stop, then inspect your vehicle.
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open the windows.
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stop immediately.
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remember to conduct a post-trip inspection.
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2.
Which of the following is NOT part of the procedure to stop a trailer skid?
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Releasing the brakes
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Using the trailer hand brake to get traction back
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Not using the hand brake
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Recognizing the skid
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3.
In a vehicle with a dual air brake system:
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one system supplies air to the trailer.
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both systems typically operate the regular brakes on the rear axle.
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each system has its own air tanks.
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All of the above.
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4.
When backing, as soon as you see the trailer getting off the proper path, you should:
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turn the top of the steering wheel in the opposite direction of the drift.
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to keep a firm grip on the steering wheel and continue backing.
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turn the top of the steering wheel in the direction of the drift.
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None of the above.
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5.
Where are shut-off valves?
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At the front of each trailer.
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On converter dollies.
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At the front and back of each trailer.
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At the back of each trailer.
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6.
The best way to recognize that your trailer has started to skid is:
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by using retarders.
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by hearing squeaking noises from the wheels.
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by seeing it in your mirrors.
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None of the above.
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7.
The use of brakes on a steep downgrade is:
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the main braking factor.
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much more effective than the engine braking effect.
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a supplement to the braking effect of the engine.
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dangerous, and should be avoided at all costs.
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8.
You should use chocks when parking a trailer without spring brakes because:
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it is required by law.
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the brakes will hold only as long as there is air pressure in the trailer air tank.
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it helps prevent brake failure.
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it helps prevent skids.
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9.
When using a fire extinguisher, you should stay:
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at whatever distance you think is safe.
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as far away from the fire as possible.
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at least 10 feet away from the fire.
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as close to the fire as possible, without getting burnt.
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10.
Do not use the trailer hand valve in driving because:
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the brakes can overheat and lose their braking power.
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the trailer emergency brakes will come on.
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of the danger of making the trailer skid.
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All of the above.
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