Roadway departure (RwD) crashes are a major contributor of rural two-lane (R2L) highway crashes and fatalities. For targeted reduction of crashes and fatalities due to roadway departure, a thorough understanding of factors associated with RwD crashes is necessary. This study quantitatively assessed the available pre-crash factors that might influence the RwD crashes by developing a logit model comparing roadway, crash environment, and the vehicle and driver-related characteristics of 122,978 crashes that occurred in Louisiana over thirteen years. With a high prediction accuracy (81.9% area under the receiver operating characteristics curve), the model presented significant individual associations across crash characteristics with RwD crashes on R2L highways, for example – animals on roadways, snow/sleet/hail, 50–55 mph speed limit, AADT of 1,001–5,000 vehicles per day, drug intoxication, motorcycles, driving during 12 am to 6 am, curve radius of 501–1,000 ft., absence of streetlight, alcohol intoxication. Investigation on these top factors using association rules mining reveals findings such as – a higher likelihood of RwD crashes can be strongly associated animal presence coupled with the absence of streetlights, male drivers during the early morning (12 am to 6 am), male drivers driving with no passengers, drivers being intoxicated by both drugs and alcohol, etc. Findings from this study are expected to help highway safety specialists not only in identifying and predicting RwD crashes but also in an improved understanding of associated contributing factors leading to the application of proper countermeasures for the strategic reduction of RwD crashes.


    Access

    Download


    Export, share and cite



    Title :

    Exploring the influential factors of roadway departure crashes on rural two-lane highways with logit model and association rules mining


    Contributors:


    Publication date :

    2021




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    Unknown




    Analysis of Roadway Departure Crashes on Two-Lane Rural Roads in Texas

    D. Lord / M. A. Brewer / K. Fitzpatrick et al. | NTIS | 2011


    Holistic Approach to Reduce Rural Roadway Departure Crashes

    Kar, Kohinoor / Weeks, Richard S. / Satti, Krishna | Transportation Research Record | 2013




    Effect of Roadside Features on Single-Vehicle Roadway Departure Crashes on Rural Two-Lane Roads

    Peng, Yichuan / Geedipally, Srinivas Reddy / Lord, Dominique | Transportation Research Record | 2012