Guidance for the Development and Application of Crash Modification Factors

The objectives of this research are to develop: (1) Guidelines for calibration of current crash modification factors (CMFs) to assess treatment effectiveness at sites for which the site characteristics (e.g., geographical location, terrain, traffic demand, geometric design, traffic control features) may be different. (2) Guidelines for how existing and future CMFs can be combined in a single location with multiple treatments. (3) Recommended procedures for formulating and calibrating future CMFs that identify key influential site characteristics. These guidelines and procedures will assist transportation agencies in applying existing and future CMFs more accurately throughout the United States.


  • English


  • Status: Active
  • Funding: $600000
  • Contract Numbers:

    Project 17-63

  • Sponsor Organizations:

    National Cooperative Highway Research Program

    Transportation Research Board
    500 Fifth Street, NW
    Washington, DC  United States  20001

    American Association of State Highway and Transportation Officials (AASHTO)

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

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Project Managers:

    Jared, David

  • Performing Organizations:

    University of North Carolina - Chapel Hill

  • Principal Investigators:

    Carter, Daniel

  • Start Date: 20130801
  • Expected Completion Date: 20170930
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01743544
  • Record Type: Research project
  • Source Agency: Transportation Research Board
  • Contract Numbers: Project 17-63
  • Files: TRB, RiP
  • Created Date: Jun 22 2020 3:05PM