Development of safety performance functions for North Carolina.

Details

• Creators:
  Srinivasan, Raghavan ; Carter, Daniel
• Corporate Creators:
  University of North Carolina (System). Highway Safety Research Center
• Corporate Contributors:
  North Carolina. Dept. of Transportation. Research and Analysis Group
• Subject/TRT Terms:
  • Highway safety
  • Traffic safety
  • Highway Safety Manual
  • Calibration
  • Safety
  • Performance Function
  • Negative binomial regression
  • SafetyAnalyst
  • Empirical Bayes
  • Network screening
  More +
• Publication/ Report Number:
  FHWA/NC/2010-09
• Resource Type:
  Tech Report
• Geographical Coverage:
  North Carolina
• Corporate Publisher:
  North Carolina. Department of Transportation. Research and Analysis Group
• Abstract:
  "The objective of this effort is to develop safety performance functions (SPFs) for different types of facilities in North Carolina ; and illustrate how they can be used to improve the decision making process. The prediction models in Part C of the Highway ; Safety Manual were calibrated using data from North Carolina. SPFs were estimated for 9 crash types for 16 roadway types ; using statewide data from North Carolina – these SPFs just include AADT and can be used for network screening. In addition, ; SPFs for rural two lane roads were developed using AADT and other site characteristics including shoulder width/type and ; terrain. Using examples, this report outlines how the different SPFs can be used for network screening, project level analysis, ; and before-after evaluation using the empirical Bayes method. Finally, there is a discussion of how NCDOT can use the SPFs in ; the future by either calibrating the SPFs developed in this effort and/or develop SPFs using negative binomial regression. Along ; with the final report are Excel files that can be used by NCDOT to calibrate the SPFs in the future and to implement the HSM ; prediction methodology."
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/23607/dot_23607_DS1.pdf
• File Type:
  [PDF - 823.33 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:7b53c7df09dc81750a700a64e592245b62d823b7b6564e30bcf91a0be296fe85d9a934b32758999ed9a53d0cd2382bc3e4a928c2e1a0a971a6422c19455b5247