THE DEVELOPMENT OF AN AUTOMATIC FREEWAY MERGING CONTROL SYSTEM

THE DEVELOPMENT IS DESCRIBED OF THE RAMP METERING THEORY DEVELOPED FROM RESEARCH ON THE GULF FREEWAY. THE PROTOTYPE RAMP CONTROL INSTALLATION AT THE TELEPHONE ROAD ON-RAMP WAS DESIGNED AND DEVELOPED BY AUTOMATIC SIGNAL DIVISION ACCORDING TO OPERATIONAL AND PERFORMANCE SPECIFICATIONS OF THE STAFF OF THE RESEARCH PROJECT. THE EQUIPMENT MAY BE USED TO METER THE RAMP ON THE BASIS OF ANY ONE OF FOUR RAMP METERING THEORIES OR MODES. THESE ARE AS FOLLOWS' MODE I - GAP ACCEPTANCE, MODE II - DEMAND - CAPACITY, MODE III - DEMAND - ADJUSTED CAPACITY, AND MODE IV - SINGLE LANE /RIGHT DEMAND-CAPACITY. DATA HAVE BEEN GATHERED FOR MODE I AND II ON ALTERNATE DAYS. THE CAPACITY SETTINGS FOR MODE II HAVE NEEDED TO BE REDUCED ON OCCASIONS /MODE III/ WHILE MODE IV HAS NOT YET BEEN EMPLOYED. /BPR/

• Supplemental Notes:
  • Hpr, 2-8-61-24, 1/6/
• Corporate Authors:

  Texas Transportation Institute

  Texas A&M University System, 1600 E Lamar Boulevard
  Arlington, TX  United States  76011
• Authors:
  • Drew, D R
  • McCasland, W R
  • Pinnell, C
  • Wattleworth, J A
• Publication Date: 1967-1-13

Subject/Index Terms

• TRT Terms: Automatic control; Control systems; Development; Freeways; Merging traffic; Ramps; Theory
• Old TRIS Terms: Metering
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00224838
• Record Type: Publication
• Source Agency: Bureau of Public Roads /US
• Files: TRIS
• Created Date: Mar 20 1994 12:00AM