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3. Psychological & Physiological

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10. Night Vision

Night vision refers to your ability to see well in low light levels and is necessary for being able to drive safely at night. The visual ability of two drivers may be about the same during daylight hours, but be markedly different at night.

Driving safely at night requires seeing well not only under low illumination, but also requires being able to see low contrast objects. A person wearing dark clothing and crossing the street in front of a driver is much harder to detect at night because there is much less contrast at night between the darkly-clothed pedestrian and the dark background.

Poor night vision while driving at night can result in:

  • not being able to react to hazards in front of your vehicle in a timely manner
  • tailgating
  • failing to steer in the proper direction when necessary to avoid low-contrast road features such as the edges of the roadway and other irregularities in the road surface



  • Lesson Summary


      

    Lesson 3 Quiz


    You will now answer 5 questions to test what you learned during this lesson. You must answer all questions correctly to receive completion credit for this lesson. You may answer the questions as many times as necessary to get them right.

    You should review the lesson material if you don't do well on the quiz.

    1. The colorless, odorless and poisonous gas from the exhaust is called:


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    2. Your "Field of Vision" is:


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    3. When listening to your car radio, or other audio device:


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    4. The "P" in the SIPDE process stands for:


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    5. A vehicles' "blind spots" are:


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