A number of studies have linked the benefits of roadway lighting to a reduction in crash rates at night for a variety of roadway types including rural intersections. Assessing the effectiveness of intersection lighting has primarily relied upon crash database modeling comparing lighted intersections to unlighted intersections. The current research effort gathered similar metrics for comparison but also measured the amount of lighting within isolated rural intersections. Sixty-three intersection locations were chosen for lighting measurement from six different counties within Minnesota. A vehicle mounted illuminance meter data collection system was used to collect data at each intersection. The data collection system utilized five separate illuminance meters and captured horizontal illuminance while driving through all 63 intersection locations. Following data collection, a series of negative binomial regression models were used to assess the horizontal lighting level in conjunction with the nighttime crash ratio, intersection configuration type, and proximity of an intersection to a curve in the roadway.


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    Title :

    Lighting Levels for Isolated Intersections: Leading to Safety Improvements


    Contributors:
    Edwards C. (author)

    Publication date :

    2015


    Size :

    70 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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