The Federal Highway Administration (FHWA) organized a Pooled Fund Study of 26 States to evaluate low-cost safety strategies as part of its strategic highway safety effort. One of the strategies chosen to be evaluated for this study was STOP signs with increased retroreflectivity. This strategy is intended to reduce the frequency of crashes related to driver unawareness of stop control at unsignalized intersections. Geometric, traffic, and crash data were obtained at unsignalized intersections for 231 sites in Connecticut and 108 sites in South Carolina. In each case, the strategy was implemented as a blanket application of STOP signs with increased retroreflectivity. Empirical Bayes (EB) methods were incorporated in a before-after analysis to determine the safety effectiveness of increasing the sign retroreflectivity. There was a statistically significant reduction in rear-end crashes in South Carolina. Based on the results of the disaggregate analysis, reductions in crashes were found at three-legged intersections and at intersections with low approach volumes.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Safety Evaluation of Increasing Retroreflectivity of STOP Signs


    Beteiligte:
    B. Persaud (Autor:in) / C. Lyon (Autor:in) / K. Eccles (Autor:in) / N. Lefler (Autor:in) / R. Amjadi (Autor:in)

    Erscheinungsdatum :

    2008


    Format / Umfang :

    44 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Retroreflectivity of Existing Signs in Pennsylvania

    K. Clevenger / K. Colello / J. Quirus | NTIS | 2012



    Minimum Retroreflectivity for Overhead Guide Signs and Street Name Signs

    Carlson, Paul J. / Hawkins, H. Gene | Transportation Research Record | 2002


    Updated Minimum Retroreflectivity Levels for Traffic Signs

    P. J. Carlson / H. G. Hawkins | NTIS | 2003


    Developing Updated Minimum In-Service Retroreflectivity Levels for Traffic Signs

    Carlson, Paul J. / Hawkins, H. Gene / Schertz, Greg F. et al. | Transportation Research Record | 2003