USE OF AVI INFORMATION LINKED UP WITH DETECTOR OUTPUT IN TRAVEL TIME PREDICTION AND O-D FLOW ESTIMATION

A continuing interest exists in methods for obtaining a traffic parameter in real time for which no direct surveying techniques are available. This paper describes two models based on the idea of relating the conventional detector output to the information from automatic vehicle identification (AVI): a predictor of travel times and an estimator of origin-destination (O-D) flows. The data analyses have indicated that whilst there exists strong linear relation between travel time and detector occupancy, the relation is day-to-day variable as well as site-specific. Accordingly by dealing with the dynamics between the output of vehicle detector and the one of AVI, the travel time predictor high enough in fidelity for the variation of the traffic state and positioned on simple real-time basis has been presented. A possibility has been shown that time-variable O-D flows can be tracked in real time via Kalman filtering from the link volumes by vehicle detectors and the link choice proportions in accordance with the link time obtained by AVI. As to the estimation accuracy, further investigation is in progress to address these problems.

  • Supplemental Notes:
    • Five volumes of papers and one volume of abstracts comprise the published set of conference materials.
  • Corporate Authors:

    VERTIS

    TORANOMOM 34 MORI BUILDING 1-25-5
    TORANOMON, MINATOKU, TOKYO 105  Japan 
  • Authors:
    • Yasui, K
    • Ikenoue, K
    • Takeuchi, H
  • Conference:
  • Publication Date: 1995-11

Language

  • English

Media Info

  • Pagination: p. 94

Subject/Index Terms

Filing Info

  • Accession Number: 00716547
  • Record Type: Publication
  • Report/Paper Numbers: Volume 1
  • Files: TRIS
  • Created Date: Feb 28 1996 12:00AM