Calibrating the Highway Safety Manual Crash Prediction Models for Idaho's Highways

This project will calibrate the crash prediction models in the American Association of State Highway and Transportation's Officials (AASHTO's) Highway Safety Manual (HSM) to Idaho conditions to more accurately assess the expected safety performance of different highway segments in Idaho and to assess the safety impact of different design alternatives. The crash prediction models used are for three highway facility types: rural two-lane two-way roads, rural multilane roads, and urban and suburban arterial roads. This project will calibrate the safety performance functions (SPFs) for all three facility types based on their safety performance in Idaho using the state's crash data.


    • English


    • Status: Completed
    • Contract Numbers:

      RP 225

    • Sponsor Organizations:

      Idaho Transportation Department

      P.O. Box 7129, 3311 West State Street
      Boise, ID  United States  83707-1129
    • Project Managers:

      Jennings, Brent

      Tomlinson, John

    • Performing Organizations:

      University of Idaho, Moscow

      Office of Sponsored ProgramsNational Institute for Advanced Transportation Technology
      P.O. Box 443020
      Moscow, ID  United States  83844-3020
    • Principal Investigators:

      Abdel-Rahim, Ahmed

    • Start Date: 20130107
    • Expected Completion Date: 0
    • Actual Completion Date: 20160401
    • Source Data: RiP Project 33238

    Subject/Index Terms

    Filing Info

    • Accession Number: 01560831
    • Record Type: Research project
    • Source Agency: Idaho Transportation Department
    • Contract Numbers: RP 225
    • Files: RiP, STATEDOT
    • Created Date: Apr 23 2015 1:00AM