The field study was designed to investigate potential effects of retroreflector positioning on recognition of nighttime pedestrians. The subject's task was to press a response button whenever he/she recognized a pedestrian on or alongside the road, while in a car with low-beam lamps on that was driven at a constant speed on a dark road. The recognition distances were determined by the elapsed time between when a subject started a timer and when the vehicle passed the pedestrian. Four retroreflector configurations were tested: (1) No retroreflectors, (2) Torso, (3) Wrists and ankles, and (4) Major joints. Each of these configurations was presented in connection with two walking directions: an approaching and a crossing pedestrian. The subjects did not know the location of targets in advance, and the order of the retroreflector configurations/walking directions was randomized so that the occurrence and type of the next target appeared unpredictable to the subjects.


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    Title :

    Effects of Retroreflector Positioning on Nighttime Recognition of Pedestrians


    Contributors:
    J. Luoma (author) / J. Schumann (author) / E. C. Traube (author)

    Publication date :

    1995


    Size :

    30 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English





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