CDL DOUBLES PRACTICE TEST WISCONSIN
11.
If you must drive slowly, how should you alert following drivers?
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Use your emergency flashers if it is legal
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Help them out by signaling when it is safe to pass
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Flash your brake lights
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Turn on your taillights
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12.
Which of the following is most likely to get stuck on raised railroad crossings?
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A low slung unit
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A single-axle tractor with no trailer
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A single-axle tractor pulling a small trailer
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An empty truck
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13.
Emergency equipment is:
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optional.
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encouraged.
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required.
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only required when transporting hazardous materials.
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14.
If the engine catches fire, you should:
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open the hood as soon as you can.
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avoid shooting foam from the vehicle's underside.
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turn off the engine as soon as you can.
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pull into a service station and notify the emergency services.
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15.
By pushing the trailer air supply control knob in, you:
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keeps air in the tractor or truck brake system.
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supply the trailer with air.
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shut the air off and put on the trailer emergency brakes.
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supply the tires with air.
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16.
You as a driver should always:
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stay in your lane.
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reduce your following distance.
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drive slowly in the left lane of traffic.
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make emergency plans when you see a hazard.
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17.
If you experience a loss of hydraulic pressure, you should do all of the following except:
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Pump the brakes
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Downshift
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Put the transmission in Neutral
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Use the parking brake
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18.
Right after it starts to rain, the road is very slippery. Why?
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Because rain is very slippery.
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Because the water mixes with oil left on the road by vehicles.
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Because black ice may form on the road.
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None of the above.
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19.
In a combination vehicle, ________ is most likely to turn over.
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the tractor
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the trailer behind the tractor
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the last trailer
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All of the above.
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20.
When more than one semitrailer is behind the tractor:
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the more heavily loaded semitrailer should be in the rear.
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the lighter trailer should be in the rear.
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The order doesn't matter.
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the more heavily loaded trailer should be disconnected.
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