FREFLO: A MACROSCOPIC SIMULATION MODEL OF FREEWAY TRAFFIC

Three categories of simulation models for freeway traffic have been developed in the past: microscopic, mesoscopic, and macroscopic. Microscopic models represent individual vehicle movements; masoscopic models represent platoon movements; and macroscopic models represent traffic flow in terms of aggregate measures such as density, space-mean-speed, and flow rate. This paper discusses a model in the macroscopic category that is particularly useful for evaluation freeway operations. The model is described in mathematical detail for basic flow simulation, ramp metering and diversion, surveillance, and representation of freeway incidents. Computation of performance measures is also detailed. The simulation model, FREFLO, which is based on the model equations presented, is then described and illustrated with a sample run. /Author/

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1979/722/722-010.pdf
• Record URL:
  https://scholar.google.com/scholar_lookup?title=FREFLO%3A+A+MACROSCOPIC+SIMULATION+MODEL+OF+FREEWAY+TRAFFIC&author=H.+PAYNE&publication_year=1979
• Availability:
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• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Freeway Operations. 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:
  • PAYNE, HAROLD J
• Discussers:
  • Hauer, E
  • Hurdle, V F
• Publication Date: 1979

Media Info

• Media Type: Print
• Features: Figures; References;
• Pagination: pp 68-77
• Monograph Title: Urban systems operations
• Serial:
  • Transportation Research Record
  • Issue Number: 722
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Freeway operations; Ramp metering; Simulation; Traffic diversion; Traffic incidents; Traffic simulation; Traffic surveillance
• Uncontrolled Terms: Incidents; Macroscale
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00308584
• Record Type: Publication
• ISBN: 0309029724
• Files: TRIS, TRB
• Created Date: Apr 22 1980 12:00AM