Evaluating the Effects of Deer Delineators on Wildlife-Vehicle Collisions in Northwest Wyoming

The purpose of this project is to determine the efficacy of deer delineators in reducing wildlife vehicle collisions for the Wyoming Department of Transportation (WYDOT); to evaluate the benefits of installing additional delineators along the highways; and to use WYDOT's carcass and collision data to develop a predictive model of where wildlife-vehicle collisions are most likely to occur across the state. Collisions between ungulates and motor vehicles are a threat to traffic safety and wildlife populations. Wildlife warning reflectors (deer delineators) are a relatively low cost method for mitigating wildlife vehicle collisions. A properly installed system consists of a series of roadside posts with specially designed reflectors mounted to face across the road, or additionally away from the road in specific cases. As the vehicles pass with headlights on, light is reflected in a moving pattern across the road at various angles. It is intended that wildlife will notice the reflected light, causing them to halt until the vehicle and lights have passed. Research to date has not provided a definitive conclusion on whether the most current system of deer delineators is effective in deterring deer from crossing the road and in reducing deer-vehicle collisions. This project is quantifying deer-vehicle collisions and deer behavior in the presence and absence of reflectors in order to assess the benefits of these reflectors relative to their costs. This project is also working to assess patterns of wildlife-vehicle collisions across the state.


    • English


    • Status: Completed
    • Contract Numbers:



    • Sponsor Organizations:

      Wyoming Department of Transportation

      5300 Bishop Boulevard
      Cheyenne, WY  United States  82009-3340

      Federal Highway Administration

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

      Carlson, Shelby

    • Performing Organizations:

      Conservation Research Center of Teton Science School

      700 Coyote Canyon Road
      Jackson, WY  United States  83001
    • Principal Investigators:

      Graham, Morgan

      Riginos, Corinna

    • Start Date: 20120831
    • Expected Completion Date: 0
    • Actual Completion Date: 20150630
    • Source Data: RiP Project 35610

    Subject/Index Terms

    Filing Info

    • Accession Number: 01530023
    • Record Type: Research project
    • Source Agency: Wyoming Department of Transportation
    • Contract Numbers: RS05(212), RS05212
    • Files: RiP, STATEDOT
    • Created Date: Jul 3 2014 1:01AM