AUTOMATIC DETECTION OF FREEWAY INCIDENTS DURING LOW VOLUME CONDITIONS

A computer program to detect vehicular incidents which occur on urban freeways operating at low volume conditions was developed, tested and evaluated. The type of incidents to be detected are those vehicles which entered but for some reason did not pass through a defined study section. The algorithm can operate in realtime and is based on an individual vehicle input-output process. It was tested on traffic data from a four-lane section of freeway in Houston, Texas. The algorithm's performance was evaluated over a wide range of traffic volumes (100 to 1200 vehicles per hour) and three different detector spacings - 500, 1000 and 1500 feet.

  • Supplemental Notes:
    • Sponsored in part by Texas State Dept. of Highways and Public Transportation, Austin. Transportation Planning Div.
  • Corporate Authors:

    Texas Transportation Institute

    Texas A&M University System, 1600 E Lamar Boulevard
    Arlington, TX  United States  76011

    Federal Highway Administration

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

    Texas State Department of Highways & Public Transportation

    Transportation Planning Division, P.O. Box 5051
    Austin, TX  United States  78763
  • Authors:
    • Fambro, D B
    • Ritch, G P
  • Publication Date: 1979-9

Media Info

  • Pagination: 73 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00337247
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: FHWA/TX-79/23-210-1 Res Rpt., TTI-2-18-77-210-1
  • Files: NTIS, TRIS, USDOT, STATEDOT
  • Created Date: Aug 15 1981 12:00AM