Developing a Prototype System for Establishing Passing and No-Passing Zones of Two-Lane Highways

The Wyoming Department of Transportation (WYDOT) implements the two-vehicle method to measure passing sight distances on Wyoming's two-lane roads comprising thousands of miles in order to establish passing and no-passing zones. However, the apparatus used to conduct the method is no longer functional. Therefore, WYDOT and local jurisdictions in Wyoming are in dire need of a functional, advanced, accurate, cost-effective, easy-to-use, durable, upgradable system to conduct the method. It is essential that the system be accurate because WYDOT is continuously establishing the zones statewide and establishing the zones is costly. With the advanced system, WYDOT will also be able to evaluate existing zone designs. WYDOT is not only establishing zones statewide but also re-establishing the zones due to changes in speed limits, construction or placement of sight obstructions near horizontal curves, roadway re-alignment, crashes, complaints from citizens and other reasons. Hence, the aim of the project is to provide WYDOT with two state-of-the-art prototypes of the two-vehicle method with all advanced intelligent transportation system (ITS) features. One functional prototype, Prototype 1, will be developed, tested at multiple locations and provided to WYDOT while the other, Prototype 2, with all the cutting-edge ITS features, is being developed. Once Prototype 2 is fully developed and tested it will be provided to WYDOT and Prototype 1 will be retrieved for upgrading. Prototype 1 will be enhanced by incorporating the advanced ITS features and tested before being provided to WYDOT once more. The prototypes' manuals will be provided to WYDOT as well.


  • English


  • Status: Active
  • Funding: $171899
  • Contract Numbers:



  • Sponsor Organizations:

    Wyoming Department of Transportation

    5300 Bishop Boulevard
    Cheyenne, WY  United States  82009-3340

    Office of the Assistant Secretary for Research and Technology

    University Transportation Centers Program
    Department of Transportation
    Washington, DC  United States  20590
  • Managing Organizations:

    University of Wyoming, Laramie

    1000 E University Avenue, Department 3295
    Laramie, WY  United States  82071
  • Project Managers:

    Mellor, Jeffery

    Shields, Ryan

    Kline, Robin

  • Performing Organizations:

    Wyoming Department of Transportation

    5300 Bishop Boulevard
    Cheyenne, WY  United States  82009-3340

    Mountain-Plains Consortium

    North Dakota State University
    Fargo, ND  United States  58108
  • Principal Investigators:

    Ksaibati, Khaled

    Farid, Ahmed T. M.

    Bershinsky, Victor

    Muknahallipatna, Suresh

  • Start Date: 20190102
  • Expected Completion Date: 20220131
  • Actual Completion Date: 0
  • USDOT Program: University Transportation Centers Program
  • Source Data: MPC-600

Subject/Index Terms

Filing Info

  • Accession Number: 01732203
  • Record Type: Research project
  • Source Agency: Wyoming Department of Transportation
  • Contract Numbers: RS02219, 69A3551747108
  • Created Date: Feb 26 2020 2:02PM