Crash Modification Factor Recommendation List

Crash Modification Factors (CMFs) are used to adjust crash predictions based on changes in geometrics, typically based on a specific countermeasure. When evaluating design alternatives, CMFs can be used in conjunction with safety performance functions (SPFs) to compute crash predictions. These crash predictions, along with costs associated with the design alternatives, are useful for making data-driven decisions. The CMF Clearinghouse is a repository of CMFs that is sortable and filterable, making it easy to find specific CMFs. In many cases there are several CMFs for the same countermeasures, however. While some CMFs only apply to specific facility or crash types. Selecting the most appropriate CMF for a given application can require extensive review of the associated research that led to the development of the CMF, despite use of the star rating system. A vetted list of practical CMFs to serve as a standard for practitioners in Kentucky is necessary as well as guidance tailored for Kentucky highways and conditions.


    • English


    • Status: Completed
    • Funding: $175000
    • Contract Numbers:

      SPR 19-578

    • Sponsor Organizations:

      Kentucky Transportation Cabinet

      200 Mero Street
      Frankfort, KY  United States  40622
    • Performing Organizations:

      University of Kentucky, Lexington

      Kentucky Transportation Center College of Engineering, 176 Raymond Building
      Lexington, KY  United States  40506-0281
    • Principal Investigators:

      Green, Eric

    • Start Date: 20180701
    • Expected Completion Date: 20200630
    • Actual Completion Date: 0

    Subject/Index Terms

    Filing Info

    • Accession Number: 01677445
    • Record Type: Research project
    • Source Agency: University of Kentucky, Lexington
    • Contract Numbers: SPR 19-578
    • Files: RIP, STATEDOT
    • Created Date: Aug 6 2018 2:53PM