Development of Crash Modification Factors for DOT Funded Selective Enforcement

This research proposes to evaluate the effectiveness of the selective enforcement campaigns in reducing all crashes with a focus on the impact of these campaigns on reducing serious injury/fatal crashes. It is recognized in the literature that enforcement activities have both a temporal and spatial impact on driver behavior, often called the halo effect. The halo effect implies that driver behavior (speeding) is reduced for a time and/or distance from a known enforcement point. This research will examine an officer's patrol pattern during the selective enforcement period to evaluate the effectiveness. This research will focus on the return on investment in terms of crash reductions and reductions in crash severity for selective enforcement. This research will examine the halo effect and the degree to which the spatial and temporal impact crashes and crash severity. This research will develop Crash Modification Factors (CMF) for selective enforcement related to driving under the influence (DUI) and Speeding crashes. The crash modifications factors will be developed, as data supports, to a sufficient depth to submit to the Crash Modification Factor (CMF) Clearinghouse.


  • English


  • Status: Completed
  • Contract Numbers:


    UTCA #14402

  • Sponsor Organizations:

    Research and Innovative Technology Administration

    University Transportation Centers Program
    1200 New Jersey Avenue
    Washington, DC  United States  20590

    Alabama Department of Transportation

    1409 Coliseum Boulevard
    Montgomery, AL  United States  36130-3050
  • Project Managers:

    Barnett, Timothy

  • Performing Organizations:

    University of Alabama, Tuscaloosa

    Department of Civil, Construction and Environmental Engineering
    P.O. Box 870205
    Tuscaloosa, AL  United States  35487-0205
  • Principal Investigators:

    Smith, Randy

    Jones, Steven

    Graettinger, Andrew

  • Start Date: 20140101
  • Expected Completion Date: 20150630
  • Actual Completion Date: 20150630
  • Source Data: RiP Project 36279

Subject/Index Terms

Filing Info

  • Accession Number: 01518437
  • Record Type: Research project
  • Source Agency: University Transportation Center for Alabama
  • Contract Numbers: 24574, UTCA #14402
  • Files: UTC, RiP
  • Created Date: Mar 19 2014 1:00AM