ESTIMATING DESTINATION-SPECIFIC TRAFFIC DENSITIES ON URBAN FREEWAYS FOR ADVANCED TRAFFIC MANAGEMENT

A continuous-time Markov compartment model of freeway traffic flow is presented and tested using simulated and real data. By using the method of large population approximation, the underlying stochastic process is approximated by the sum of a nonlinear deterministic process and a linear, time-varying Gaussian stochastic process. With this approximation a Kalman filter that tracks the density of a freeway section, broken down by destination, was derived. The filter was then tested using simulated data and actual freeway data obtained from Interstate 35W.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1994/1457/1457-017.pdf
• Record URL:
  https://scholar.google.com/scholar_lookup?title=ESTIMATING+DESTINATION-SPECIFIC+TRAFFIC+DENSITIES+ON+URBAN+FREEWAYS+FOR+ADVANCED+TRAFFIC+MANAGEMENT&author=G.+Davis&author=J.+Kang&publication_year=1994
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309061008
• Supplemental Notes:
  • This paper appears in Transportation Research Record No. 1457, Part 2, Traffic Flow and Capacity. 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:
  • Davis, Gary A
  • Kang, Jeong-Gyu
• Publication Date: 1994

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 143-148
• Monograph Title: Part 1: 1994 TRB Distinguished Lecture, Adolf D May; Part 2: Traffic flow and capacity
• Serial:
  • Transportation Research Record
  • Issue Number: 1457
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Advanced traffic management systems; Estimating; Field studies; Freeways; Kalman filtering; Markov processes; Origin and destination; Stochastic processes; Testing; Traffic density; Traffic simulation; Urban areas
• Uncontrolled Terms: Field data
• Old TRIS Terms: Simulated data; Urban freeways
• Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management; I71: Traffic Theory;

Filing Info

• Accession Number: 00677657
• Record Type: Publication
• ISBN: 0309061008
• Files: TRIS, TRB
• Created Date: May 11 1995 12:00AM