Evaluation of interactive highway safety design model crash prediction tools for two-lane rural roads on Kansas Department of Transportation projects.

Details

• Creators:
  Lubliner, Howard ; Bornheimer, Cheryl ; Schrock, Steven ; Wang, Ming-Heng ; Fitzsimmons, Eric
• Corporate Creators:
  University of Kansas. Dept. of Civil, Environmental and Architectural Engineering
• Subject/TRT Terms:
  • Rural highways
  • Highway safety
  • Traffic accidents
  • Mathematical prediction
  • Two lane highways
  • Accident risk forecasting
  • Geometric design
  • Geometric segments
• Publication/ Report Number:
  K-TRAN: KU-10-1R
• Resource Type:
  Tech Report
• Geographical Coverage:
  Kansas
• Corporate Publisher:
  Kansas. Dept. of Transportation
• Abstract:
  Historically, project-level decisions for the selection of highway features to promote safety were ; based on either engineering judgment or adherence to accepted national guidance. These tools have allowed ; highway designers to produce facilities that have demonstrated an improving safety record in recent decades. ; However, these tools do not allow for comparison of the safety performance of dissimilar facilities or ; roadway attributes. To address this gap, researchers have been working for decades to develop Crash ; Prediction Models (CPMs) that can estimate, and ideally predict the expected safety performance of a ; highway based on its geometric and traffic control features. The main focus of this research was to evaluate ; the use of CPMs for rural two-lane highways in Kansas. Both CPMs provided in the Highway Safety Manual ; (HSM) and ones developed specifically based on Kansas data were considered. ; Many useful insights and tools were developed through this research study that focused on nonintersection ; related crashes. The primary conclusions were that single statewide calibration factors were ; calculated and recommended for rural two-lane highway segments and 3- and 4-leg stopped controlled ; intersections. A calibration function was also developed for highway segments that can be used to better ; account for animal crashes, which account for a significant number of rural two-lane highway crashes.
  More +
• Format:
  PDF
• Funding:
  C1815
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/26741/dot_26741_DS1.pdf
• File Type:
  [PDF - 518.12 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:94ecd51b6e5ccce415b5b9958d59caf186e66a382c015f6c42c283d99b289957