Updated and Regional Calibration Factors for Highway Safety Manual Crash Prediction Models

The overall objective was to estimate the calibration factors for all the prediction models in Part C of the 1st edition of the Highway Safety Manual (HSM) that are of interest to North Carolina Department of Transportation (NCDOT) as well as calibration factors for freeway models that are slated to be part of the next HSM based on the latest six years of roadway, traffic, and crash data from North Carolina. For some of the models, separate calibration factors were developed for the three different regions in North Carolina (Coast, Mountain, and Piedmont). The project also produced state-specific crash type proportions to be used along with the calibration factors. For rural two lane roads, calibration functions were also estimated. Roadway and crash data from 2010 to 2015 were used in this effort.

• Record URL:
  https://connect.ncdot.gov/projects/research/RNAProjDocs/2016-09%20Final%20Report.pdf
• Record URL:
  https://connect.ncdot.gov/projects/research/pages/ProjDetails.aspx?ProjectID=2016-09
• Record URL:
  https://rosap.ntl.bts.gov/view/dot/54421
• Corporate Authors:

  University of North Carolina, Chapel Hill

  Highway Safety Research Center
  730 Martin Luther King Jr. Boulevard, CB 3430
  Chapel Hill, NC  United States  27599-3430

  North Carolina Department of Transportation

  Research and Development Unit
  104 Fayetteville Street
  Raleigh, NC  United States  27601

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Smith, Sarah
  • Carter, Daniel
  • Srinivasan, Raghavan
• Publication Date: 2017-2-17

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Final Report
• Features: Appendices; Figures; Photos; References; Tables;
• Pagination: 58p

Subject/Index Terms

• TRT Terms: Calibration; Crash risk forecasting; Freeways; Highway safety
• Identifier Terms: Highway Safety Manual
• Geographic Terms: North Carolina
• Subject Areas: Highways; Safety and Human Factors;

Filing Info

• Accession Number: 01727710
• Record Type: Publication
• Report/Paper Numbers: FHWA/NC/2016-09
• Files: NTL, TRIS, ATRI, USDOT, STATEDOT
• Created Date: Jan 21 2020 9:48AM