THE DYNAMIC CONTROL OF AUTOMOTIVE TRAFFIC AT A FREEWAY ENTRANCE RAMP

THE UTILIZATION OF AN AUTOMATIC TRAFFIC CONTROLLER THAT REGULATES THE ENTRANCE FLOW OF VEHICLES TO A RATE WHICH MINIMIZES THE TOTAL EXPECTED DELAY EXPERIENCED BY VEHICLES ENTERING THE ROADWAY, SUBJECT TO THE RESTRICTION THAT THE ENTRANCE FLOW DOES NOT CAUSE A BREAKDOWN OF FLOW ALONG THE HIGHWAY IS DISCUSSED. A STOCHASTIC STATE MODEL IS USED TO STUDY THE DYNAMIC BEHAVIOR OF THE CONTROL SYSTEM. IN ALL, SEVERAL DESIGNS WERE INVESTIGATED INCLUDING: A FIXED CONTROL SYSTEM, WITH A PREDETERMINED THRESHOLD; A PROGRAMMED CONTROL SYSTEM, IN WHICH THE THRESHOLD IS VARIED AS A FUNCTION OF TIME; AND A FEEDBACK CONTROL SYSTEM, IN WHICH THE THRESHOLD IS VARIED AS A FUNCTION OF THE AVERAGE STREAM VOLUME. THE RESULTANT CONTROL SYSTEMS WERE OR ARE BEING IMPLEMENTED AND TESTED ON THE GULF FREEWAY IN HOUSTON, TEXAS. /AUTHOR/

• Supplemental Notes:
  • Vol 6, pp 385-393
• Corporate Authors:

  Automatica

  ,    
• Authors:
  • Yagoda, H N
• Publication Date: 1970-5

Subject/Index Terms

• TRT Terms: Automatic control; Behavior; Building entrances; Control systems; Dynamics; Feedback control; Highway traffic; Interchange ramps; Mathematical models; Stochastic processes; Traffic control; Traffic delays; Traffic flow
• Old TRIS Terms: Entrances (Other than doors); Freeway entrances and exits; Freeway ramps; Traffic control systems; Vehicular traffic
• Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00225891
• Record Type: Publication
• Files: TRIS
• Created Date: Feb 12 1971 12:00AM