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3. Psychological & Physiological

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5. Peripheral Vision

Peripheral or side vision is the field of view that surrounds the central portion of the visual field. You can see things most clearly directly ahead while things to each side (your peripheral vision), are less distinct. If your peripheral vision is severely limited, it can seriously affect safe driving ability unless it is compensated for by increased scanning and visual search.

Peripheral vision is used in part to detect information that may be important for safe driving. This kind of information includes road signs, appearances of hazards, and changes in the flow of traffic. When a driver notices something important, the driver moves his or her head and eyes to look at the object or event of interest.

Peripheral vision is also used in controlling the vehicle. When a driver looks in the rear-view mirror, peripheral vision is used to monitor traffic in front of the vehicle. In keeping the vehicle centered in the lane, peripheral vision is used to monitor the lane boundaries and keep the vehicle oriented in traffic.

Poor peripheral vision can result in:

  • failing to react to a hazard coming from the left or right,
  • failing to see or obey a stop light suspended over an intersection
  • weaving while negotiating a curve
  • driving too close to parked cars.

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    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. A vehicles' "blind spots" are:


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


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    3. Your "Field of Vision" is:


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


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


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