This report documents design, development and testing of strategies for control of traffic within an urban freeway corridor, the Dallas, Texas, North Central Expressway Corridor. A multilevel control strategy was developed for four primary elemetns of the study: Freeway, frontage roads, arterial streets, and driver information. A hardware system design was developed and a central computer and minicomputer system for corridor control was implemented. The control strategies for each of the four subsystems may act independently or may be linked together for intergrated control. Due to funding and time limitations, it was not possible to evaluate a complete system, although this may be possible at a future date as the basic hardware and software system are virtually complete. Strategies presented provide for real-time traffic responsive control in all phases. Freeway ramp metering rates are based on one minute speed and flow data, with response to individual gaps. Frontage road control provides for selection of three or four phase operation to accommadate progression optimization. Arterial control incorporates variable phasing and skip-phasing for this purpose. Frontage road and arterial control parameters are updated on a ten-minute basis. Evaluation results on operational and pilot subsystems are presented. /Author/

  • Supplemental Notes:
    • Sponsored by DOT, Federal Highway Administration.
  • Corporate Authors:

    Texas Transportation Institute

    Texas A&M University System, 1600 E Lamar Boulevard
    Arlington, TX  United States  76011
  • Authors:
    • Carvell Jr, J D
  • Publication Date: 1976-8

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 78 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00165527
  • Record Type: Publication
  • Report/Paper Numbers: FHWA-RD-77- 15 Final Rpt., FCP 3261-523
  • Contract Numbers: DOT-FH-11-7964
  • Files: TRIS
  • Created Date: Jan 13 1978 12:00AM