Research for AASHTO Standing Committee on Highways. Task 332. Users' Guide to Develop Highway Safety Manual Safety Performance Function Calibration Factors

The objective of this task was to provide step by step instructions for developing calibration factors for use with the Highway Safety Manual (HSM) safety performance functions (SPF). Tasks included the following: (1) Review Part C and Appendix A, Volume 2 of the Highway Safety Manual; (2) Review current literature and state department of transportation (DOT) practices on SPF calibration; (3) Review the scope of work proposed for the HSM Implementation Pool Fund Study: Transportation Pooled Fund (TPF) 5-255 to ensure consistency and avoid information gaps and duplication of efforts; (4) Submit a draft outline of the calibration guide for panel review; (5) Fully develop draft guidelines that will assist a transportation agency in developing statistically sound calibration factors; (6) Submit the draft guidelines to the panel for review, and (7) Submit a revised final report that includes the revised guidelines.


  • English


  • Status: Completed
  • Contract Numbers:

    Project 20-07, Task

  • Sponsor Organizations:

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    American Association of State Highway & Transportation Officials

    444 North Capitol Street, NW, Suite 225
    Washington, DC  United States  20001

    National Cooperative Highway Research Program

    Transportation Research Board
    500 Fifth Street, NW
    Washington, DC  United States  20001
  • Performing Organizations:

    NAVIGATS, Incorporated

  • Principal Investigators:

    Bahar, Geni

  • Start Date: 20120710
  • Expected Completion Date: 0
  • Actual Completion Date: 20131130
  • Source Data: RiP Project 38236

Subject/Index Terms

Filing Info

  • Accession Number: 01547362
  • Record Type: Research project
  • Source Agency: Transportation Research Board
  • Contract Numbers: Project 20-07, Task
  • Files: TRB, RiP
  • Created Date: Dec 8 2014 1:00AM