PASSER IV: A PROGRAM FOR OPTIMIZING SIGNAL TIMING IN GRID NETWORKS (WITH DISCUSSION AND CLOSURE)

The development of PASSER IV, a practical state-of-the-art program for simultaneously optimizing progression bandwidth in multiarterial traffic signal networks, is described. PASSER IV is efficient and is being developed for use on personal computers. A user-friendly mouse-driven graphic interface that provides data entry and file management functions makes the program extremely easy to use. However, the main core of the program, written in FORTRAN 77 using structured programming techniques, is usable on virtually any type of computer. The existing version of PASSER IV determines all four signal timing parameters: cycle length, green split, offset, and phasing sequence. The program optimizes cycle lengths, offsets, and phasing sequences to maximize progression bandwidth. The green splits, however, are determined in a preprocessor using Webster's method. In addition, PASSER IV is capable of minimizing cycle length and can report signal timings for several alternative optimal solutions. Also described is ongoing research to enhance the capabilities of PASSER IV. This research includes optimization of green splits, optimization of two additional main-cross split (circular) phasing sequences, delay calculation procedure, and the capability to generate data files for TRANSYT 7F to facilitate fine-tuning of bandwidth solutions through bandwidth-constrained delay optimization. The final version of PASSER IV will be available in mid-1994.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1993/1421/1421-011.pdf
• Record URL:
  https://scholar.google.com/scholar_lookup?title=PASSER+IV%3A+A+PROGRAM+FOR+OPTIMIZING+SIGNAL+TIMING+IN+GRID+NETWORKS+(WITH+DISCUSSION+AND+CLOSURE)&author=N.+Chaudhary&author=C.+Messer&publication_year=1993
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309055741
• Supplemental Notes:
  • This paper appears in Transportation Research Record No. 1421, Traffic Control Devices, Visibility, and Traffic Signal Systems. 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:
  • Chaudhary, Nadeem A
  • Messer, Carroll J
• Discussers:
  • Gartner, Nathan H
  • Little, John D C
• Publication Date: 1993

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 82-93
• Monograph Title: Traffic control devices, visibility, and traffic signal systems
• Serial:
  • Transportation Research Record
  • Issue Number: 1421
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Bandwidth; Exclusive phasing; Future; Offsets (Traffic signal timing); Optimization; Personal computers; Research; Sequencing; Traffic signal timing
• Identifier Terms: PASSER (Computer program); PASSER IV (Computer program)
• Uncontrolled Terms: Future research
• Old TRIS Terms: Green splits; Phasing sequences; Progression bandwidth
• Subject Areas: Highways; Operations and Traffic Management; Research; I73: Traffic Control;

Filing Info

• Accession Number: 00647271
• Record Type: Publication
• ISBN: 0309055741
• Files: TRIS, TRB
• Created Date: May 2 1994 12:00AM