BASIC STUDY ON TRAVEL TIME MEASUREMENT USING AUTOMATIC VEHICLE IDENTIFICATION SYSTEMS IN CONNECTION WITH CONGESTION

On Japanese rural expressway networks, bottlenecks where traffic congestion is recurring has an adverse effect on social and economic activities. In order to estimate the time required to pass through these bottleneck sections, the express highway authorities have equipped their expressway systems with vehicle detectors or automatic vehicle identification (AVI) systems. The estimated travel time is transmitted to drivers through illuminated message boards and highway radios. Although the travel time information is being used effectively by drivers, problems of inaccurate estimates for very heavy congestion sometimes arise. The primary objective of this study was to investigate the reliability of the travel time information obtained using the AVI system based on the results of traffic surveys. A traffic survey was conducted along with travel time measurements using AVI cameras; the traffic flow was recorded using television cameras at a junction connecting the outer loop expressway and an eastbound radial expressway in Osaka. From the results of the traffic survey, an investigation was undertaken to determine the relationship between the rate of recognition of vehicle license numbers and recording conditions, such as traffic volume fluctuation and traffic jam conditions. Particular attention was paid to the accuracy and reliability of travel time measurements from the video recordings.

  • 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:
    • Makigami, Y
    • Murakami, Y
    • Takeuchi, H
    • SHIMIZU, K
  • Conference:
  • Publication Date: 1995-11

Language

  • English

Media Info

  • Pagination: p. 181

Subject/Index Terms

Filing Info

  • Accession Number: 00719261
  • Record Type: Publication
  • Report/Paper Numbers: Volume 1
  • Files: TRIS
  • Created Date: Mar 5 1996 12:00AM