ROLE OF ADAPTIVE DISCRETIZATION IN A FREEWAY SIMULATION MODEL

Preliminary studies with the FREFLO freeway simulation model showed it to have difficulty depicting congested flow situations. This problem is traced to the model's transformation from the continuous to the discrete domain. Methods of determining the proper discretization intervals are shown along with simulation examples of a simple freeway. The properly discrete model requires an excessive amount of computer time for a real freeway simulation. Hence, two adaptive schemes that reduce the computing time to a manageable level are presented. The resulting model, FRECON, is then calibrated and validated using five peak-period data sets from the Santa Monica Freeway in Los Angeles.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1984/971/971-011.pdf
• Record URL:
  https://scholar.google.com/scholar_lookup?title=ROLE+OF+ADAPTIVE+DISCRETIZATION+IN+A+FREEWAY+SIMULATION+MODEL&author=P.+Babcock&author=D.+Auslander&author=M.+Tomizuka&author=A.+May&publication_year=1984
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• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Traffic Flow Theory and Characteristics. 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
• Corporate Authors:

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• Authors:
  • Babcock IV, Philip S
  • Auslander, David M
  • Tomizuka, Masayoshi
  • May, Adolf D
• Publication Date: 1984

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 80-92
• Monograph Title: TRAFFIC CAPACITY AND CHARACTERISTICS
• Serial:
  • Transportation Research Record
  • Issue Number: 971
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Accuracy; Calibration; Discrete systems; Freeways; Simulation; Structural analysis; Traffic congestion; Validation
• Old TRIS Terms: Discrete elements
• Subject Areas: Highways; Operations and Traffic Management; I71: Traffic Theory;

Filing Info

• Accession Number: 00396839
• Record Type: Publication
• ISBN: 0309037530
• Report/Paper Numbers: HS-038 737
• Files: HSL, TRIS, TRB
• Created Date: Jan 31 1986 12:00AM