STUDY OF TRAFFIC FLOW ON A RESTRICTED FACILITY

The three-phase project has utilized the Baltimore Harbor tunnel for field study and this report summarizes the accomplishments of all three phases. The expected major benefits of the research project was the capability of applying traffic flow theory concepts to the actual operation of highway facilities, particularly restricted facilities. Limited surveillance and control showed that a mainline control signal upstream of the tunnel entrance can operate at a fixed rate and increase throughput while increasing average speed. Further analysis of the tunnel traffic flow characteristics should produce methods to further optimize flow through the tunnel. A real-time data acquisition system using inductive loops is necessary in the tunnel and along the throughway. A minicomputer located at the tunnel should be used to analyze the data and develop an overall control system hierachy. Such control would probably include input ramp control, mainline control and variable message signs. Traffic flow theory can be applied to improve operations on restricted facilities.

  • Supplemental Notes:
    • Sponsored in part by Maryland State Highway Administration, Brooklandville. Bureau of Research. See also PB-282 514.
  • Corporate Authors:

    University of Maryland, College Park

    Transportation Studies Center, Department of Civil Engineering
    College Park, MD  United States  20742

    Federal Highway Administration

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

    Maryland Department of Transportation

    Bureau of Research, 2323 West Joppa Road
    Brooklandville, MD  United States  21022
  • Authors:
    • Carter, Everett C
    • Loutzenheiser, R C
  • Publication Date: 1977-1

Media Info

  • Pagination: 40 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00180869
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: HS-024 606, TSC-0021
  • Files: NTIS, TRIS, USDOT, STATEDOT
  • Created Date: Sep 14 1989 12:00AM