A VARIABLE-SEQUENCE MULTIPHASE PROGRESSION OPTIMIZATION PROGRAM

A TRAFFIC SIGNAL PROGRESSION PROGRAM HAS BEEN DEVELOPED THAT MAXIMIZES PROGRESSION ALONG A FACILITY HAVING MULTIPHASE SIGNALS. THE MAIN STREET GREEN PHASE SEQUENCES OF LEFT TURNS FIRST, THROUGH MOVEMENTS FIRST, LEADING GREEN, AND LAGGING GREEN CAN BE EVALUATED AT EACH INTERSECTION. THE PROGRESSION PROGRAM CAN DETERMINE WHICH OF THE FOUR PHASE SEQUENCES PROVIDES MAXIMUM PROGRESSION. CONVENTIONAL TWO-PHASE SIGNAL OPERATION IS A SPECIAL CASE OF THE THROUGH-MOVEMENTS-FIRST SEQUENCE. THE COMPUTER PROGRAM, WRITTEN IN FORTRAN IV, CAN ALSO COMPUTE MOVEMENT DURATIONS AND PHASE SPLITS IF DESIRED THE PROGRESSION PROGRAM WAS ADAPTED FOR USE IN THE REAL-TIME CONTROL OF AN ARTERIAL PILOT CONTROL SYSTEM IN DALLAS. THE CONTROLLERS WERE MODIFIED TO PERMIT VARIABLE-PHASE SEQUENCE OPERATION. GOOD PROGRESSION WAS OBTAINED, AND NO APPARENT PROBLEMS HAVE OCCURRED DUE TO THE VARIABLE-PHASE SEQUENCING.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrr/1973/445/445-003.pdf
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309021766
• Supplemental Notes:
  • Publication of the paper sponsored by Committee on Traffic Control Devices. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Authors:
  • Messer, Carroll J
  • Whitson, Robert H
  • Dudek, Conrad L
  • Romano, Elio J
• Publication Date: 1973

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 24-33
• Monograph Title: Traffic signals
• Serial:
  • Highway Research Record
  • Issue Number: 445
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Computer programs; Green interval (Traffic signal cycle); Sequencing; Traffic signal control systems
• Old TRIS Terms: Sequences
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00226787
• Record Type: Publication
• ISBN: 0309021766
• Files: TRIS, TRB
• Created Date: Apr 11 1974 12:00AM