The primary goal of this study was to investigate and assess the effect of lane widths on the safety and operation of highways in South Carolina. Because of the many site conditions that affect safety and operations on roadways, this type of research is critical to the development of appropriate road design standards. An analysis of crash records, in combination with a geometric inventory of existing highways in South Carolina, allowed for the development of models describing the effect of lane width on crashes. This research also takes into consideration the other confounding variables that affect crash rate, including paved shoulder width, speed limit, and traffic volume. A second phase of the research utilized a driving simulator to assess lane width scenarios that were not available in significant numbers in the field. Findings of this research take the form of design recommendations regarding more flexible selection of applicable lane and shoulder widths for new projects in South Carolina. These recommendations are closely aligned with the 2010 AASHTO Policy on the Geometric Design of Highways and Streets. This research also provides improvement suggestions regarding how crash records are recorded and reported by police officers as well as how geometric roadway characteristics are inventoried and maintained by the South Carolina Department of Transportation (SCDOT). These research findings will prove beneficial as changes are considered for lane width standards in SC.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Operational and Safety Characteristics of Lane Widths


    Beteiligte:
    J. Ogle (Autor:in) / W. Sarasua (Autor:in) / W. Davis (Autor:in) / K. Baumann (Autor:in) / H. Jordan (Autor:in) / M. Ladue (Autor:in)

    Erscheinungsdatum :

    2015


    Format / Umfang :

    268 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch