Driver eye-scanning behavior at intersections at night.
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2009-10-01
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Edition:Research report; Sept. 2008-Aug. 2009.
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Abstract:This research project analyzed drivers’ eye scanning behavior at night when approaching signalized
and unsignalized intersections using the data from a head-mounted eye-tracking system during open road
driving on a prescribed route. During the 1000-ft approaching the intersections, drivers shifted their glance
more frequently when approaching the signalized intersections than they did at unsignalized intersections.
Among different turning movements, left turns overall seemed to elicit different eye movement patterns
than the right-turn or through-movements. When approaching intersections where they would turn left, the
drivers glanced most often straight ahead, while glances to the right side decreased in frequency and
glances to the left increased in frequency compared to the right-turn and through-movement intersections.
This study used a binary logistic regression model to analyze the changes of probabilities of glances to
each of four areas of the scene as a function of distance to the intersections. At some intersections, the
probabilities of glances at particular areas significantly changed with the distance to the intersection. The
report also discusses methodological issues with on-road studies, the coding of eye-tracker data, and
problems with eye-tracking equipment.
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