A COMPUTER CONTROL SCHEME FOR CRITICAL-INTERSECTION CONTROL IN AN URBAN NETWORK

IN PERIODS OF TRAFFIC CONGESTION, RESIDUAL QUEUES AT INTERSECTIONS OR THE BLOCKING OF LANES LIMIT THE EFFICIENCY OF SYNCHRONIZED SIGNALIZATION. A COMPUTER CONTROL SCHEME IS DEVELOPED THAT CONCENTRATES UPON PROVIDING REAL-TIME, TRAFFIC-RESPONSIVE CORRECTIVE ACTION FOR A 'CRITICAL INTERSECTION,' DEFINED AS A POINT IN THE NETWORK AT WHICH PRIMARY DRIVER ROUTES CROSS OR THOSE WHERE CONGESTION HAS ARISEN FOR OTHER REASONS, SUCH AS IN THE AFTERMATH OF AN ACCIDENT OR STALL. THE SUBOPTIMAL SCHEME ATTEMPTS TO MINIMIZE THE TOTAL DELAY, MEASURED IN VEHICLE-SECONDS, NOT ONLY TO ALL USERS OF THE INTERSECTION BUT ALSO OF ACCUMULATED DELAY AT DOWNSTREAM INTERSECTIONS. WITHIN UPPER AND LOWER LIMITS ON THE CYCLE TIME, THE CONTROL OF THE TRAFFIC SIGNAL IS VARIABLE SPLIT AND VARIABLE CYCLE- LENGTH IN RESPONSE TO TRAFFIC NEEDS. A SIMULATION EVALUATION OF THE METHOD IS GIVEN VIA SEVERAL TEST CASES, USING AS A BASE CASE ACTUAL TRAFFIC DATA FROM SAN JOSE, CALIFORNIA. /AUTHOR/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/1767714
• Corporate Authors:

  Operations Research Society of America

  428 East Preston Street
  Baltimore, MD  United States  21202
• Authors:
  • Ross, D W
  • Sandys, R C
  • Schlaefli, J L
• Publication Date: 0

Media Info

• Features: Figures; References;
• Pagination: p. 141-60
• Serial:
  • Transportation Science
  • Volume: 5
  • Issue Number: 2
  • Publisher: Institute for Operations Research and the Management Sciences (INFORMS)
  • ISSN: 0041-1655
  • Serial URL: http://transci.journal.informs.org/

Subject/Index Terms

• TRT Terms: Computers; Critical flow; Intersections; Traffic congestion; Traffic control
• Old TRIS Terms: Critical areas; Emergency traffic control devices
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00226347
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 9 1972 12:00AM