STUDY OF LOCAL RAMP CONTROL AT CULEBRA ENTRANCE RAMP ON THE SOUTHBOUND IH 10 FREEWAY IN SAN ANTONIO

Ramp metering is a means of controlling the flow of traffic entering a freeway to improve freeway and merging operations. Most studies in freeway control have involved large sections of freeway with many ramps. The control systems have usually been traffic responsive, traffic actuated and system coordinated. There are many freeways that experience small traffic congestion problems. The problem area may involve only a few ramps for short periods of time. This study examines the application of a traffic actuated, traffic responsive local controller to one entrance ramp in an area of congestion on IH 10 in San Antonio. The primary objective is to determine if a local controller, as specified, can perform in an accurate and reliable manner to control ramp traffic. Secondary objectives are to provide experience for the Texas Highway Department personnel and to improve operation of traffic on the freeway.

• Record URL:
  • https://library.ctr.utexas.edu/hostedpdfs/tti/165-15.pdf
• Record URL:
  • https://rosap.ntl.bts.gov/view/dot/85275
• Corporate Authors:

  Texas Transportation Institute

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

  Texas State Department of Highways & Public Transportation

  P.O. Box 5051
  Austin, TX  United States  78763
• Authors:
  • McCasland, W R
• Publication Date: 1974-5

Media Info

• Media Type: Digital/other
• Pagination: 38 p.

Subject/Index Terms

• TRT Terms: Control; Detectors; Freeway operations; Freeways; Highway traffic control; Interchange ramps; Merging traffic; Peak hour traffic; Ramp metering; Ramps; Signal devices; Traffic actuated controllers; Traffic congestion; Traffic control; Traffic flow; Traffic signals
• Identifier Terms: Interstate Highway System
• Geographic Terms: Texas
• Old TRIS Terms: Freeway entrances and exits; Freeway ramps; Traffic control systems; Traffic merging; Traffic peak
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00091380
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: TTI-2-18-72-165-15 Intrm Rpt.
• Files: NTIS, NTL, TRIS, STATEDOT
• Created Date: Jul 15 1975 12:00AM