Exploring Friction Modification to Improve the Safety of Horizontal Curve Roadways

According to the National Highway Traffic Safety Administration’s Fatality Analysis Report System, (NHTSA/FARS) approximately 25 percent of fatal crashes on the United States highway system occur on horizontal curves. High friction surface treatments have the potential to greatly contribute to the safety of this alignment and overall traffic safety goals with modest cost, schedule, and environmental impact. This research involved a comprehensive review of crash data to identify the correlation between pavement skid number, roadway curvature, crash rate, and crash severity. Dataset analysis revealed that lower skid numbers correlated to a higher percent of wet road crashes, and around a skid number of 60, an increase in skid number no longer resulted in decreased crash rates. Also, greater injury occurred on higher degrees of curvature. The goal is to use the correlations from this research to integrate pavement friction and horizontal curvature into the Highway Safety Manual (HSM) performance function.


  • English

Media Info

  • Media Type: Web
  • Features: References;
  • Pagination: pp 895-906
  • Monograph Title: International Conference on Transportation and Development 2016: Projects and Practices for Prosperity

Subject/Index Terms

Filing Info

  • Accession Number: 01603098
  • Record Type: Publication
  • ISBN: 9780784479926
  • Files: TRIS, ASCE
  • Created Date: Jun 20 2016 3:04PM