ANALYSIS OF TRAFFIC NETWORK FLOW RELATIONS AND TWO-FLUID MODEL PARAMETER SENSITIVITY

Presented in this paper is a systematic exploration, using microscopic simulation, of the sensitivity of network-level traffic flow descriptors and relationships, particularly those of the two-fluid theory of town traffic, to network features, traffic control, and traffic-interfering urban activity levels. Moving traffic interference, which is represented by stochastic short-term lane blockages of varying duration and frequency, is shown to be a key determinant of the traffic character of an urban street network and of the behavior described by the two-fluid theory and verified operationally. In addition, the sensitivity of the two-fluid model parameters to a change in traffic control strategy, in this case the coordination of signals to achieve progression, is demonstrated. Furthermore, keeping the same network configuration, the effect of network topology on traffic flow is examined by changing the identical length of the links.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/trr/1985/1005/1005-012.pdf
• Summary URL:
  • https://scholar.google.com/scholar_lookup?title=ANALYSIS+OF+TRAFFIC+NETWORK+FLOW+RELATIONS+AND+TWO-FLUID+MODEL+PARAMETER+SENSITIVITY&author=J.+Williams&author=H.+Mahmassani&author=R.+Herman&publication_year=1985
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309038154
• Supplemental Notes:
  • 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. Publication of this paper sponsored by Committee on Traffic Flow Theory and Characteristics.
• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Williams, James C
  • Mahmassani, Hani S
  • Herman, Robert
• Publication Date: 1985

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 95-106
• Monograph Title: HIGHWAY CAPACITY, TRAFFIC CHARACTERISTICS, AND FLOW THEORY
• Serial:
  • Transportation Research Record
  • Issue Number: 1005
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Network analysis (Planning); Network links; Sensitivity; Stochastic processes; Traffic control; Traffic signal control systems; Traffic simulation
• Uncontrolled Terms: Links; Network flows
• Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management; I71: Traffic Theory;

Filing Info

• Accession Number: 00451831
• Record Type: Publication
• ISBN: 0309038154
• Report/Paper Numbers: HS-039 136
• Files: HSL, TRIS, TRB
• Created Date: Dec 31 1985 12:00AM