Evaluation of the Effectiveness of Wildlife Guards and Right of Way Escape Mechanisms for Large Ungulates in Arizona

Collisions with large ungulates (like deer, elk, and bighorn sheep) pose a safety concern for motorists on highways. In an effort to reduce ungulate-vehicle collisions in the right-of-way (ROW), the Arizona Department of Transportation (ADOT) installs ungulate-proof fencing to limit access to the ROW and funnel ungulates to new or existing structures. This fencing has escape mechanisms (jump-outs or slope jumps -- to allow wildlife already on the ROW an opportunity to leave), and wildlife crossing guards (WCGs) to allow vehicles to enter or leave the ROW while limiting wildlife passage. However, minimal empirical data exists on the effectiveness of the escape mechanisms and WCGs in keeping ungulates from the ROW. This research will determine effective heights and designs of escape mechanisms and crossing guards for wildlife such as elk, deer, and desert bighorn sheep.


    • English


    • Status: Completed
    • Funding: $293,750
    • Contract Numbers:


    • Sponsor Organizations:

      Federal Highway Administration

      1200 New Jersey Avenue, SE
      Washington, DC  United States  20590

      Arizona Department of Transportation

      206 South 17th Avenue
      Phoenix, AZ  United States  85007
    • Managing Organizations:

      Arizona Department of Transportation Research Center

      206 S. 17th Avenue
      ADOT Research Center
      Phoenix, AZ  United States  85007
    • Project Managers:

      Phelan, Bernadette

    • Performing Organizations:

      Arizona Game and Fish Department

      5000 W. Carefree Highway
      Phoenix, AZ  United States  85086
    • Principal Investigators:

      Gagnon, Jeff

    • Start Date: 20150120
    • Expected Completion Date: 20201231
    • Actual Completion Date: 20201016
    • Source Data: RiP Project 36892

    Subject/Index Terms

    Filing Info

    • Accession Number: 01566095
    • Record Type: Research project
    • Source Agency: Arizona Department of Transportation
    • Contract Numbers: SPR-729
    • Files: RIP, STATEDOT
    • Created Date: Jun 10 2015 1:01AM