ESTIMATING TRAFFIC INFORMATION ON THE HANSHIN EXPRESSWAY USING MOBILE LOCATION SYSTEM

The Hanshin Expressway Public Corporation began the operation of the traffic control system in 1970. The system has collected traffic data such as traffic volume, time occupancy and time mean velocity from ultrasonic vehicle detectors equipped on the network every 500 meters automatically. Recently, in operation of the system, there are some problems caused by a limitation of an Eulerian way of measuring traffic data. On the other hand, collecting positioning data with handheld Global Positioning System (GPS) and mobile communication devices is becoming popular in Japan. This paper aims to show the possibility of using mobile positioning systems for estimating traffic information. Accuracy of travel-time and time mean velocity on the Hanshin Expressway estimated from positioning data is verified by comparison with ones measured by AVI (Automatic Vehicle Identifiers) and vehicle detectors. The time interval of data collection and the percentage of probes necessary to obtain accurate and credible traffic information are also discussed.

• Supplemental Notes:
  • Full conference proceedings available on CD-ROM.
• Corporate Authors:

  ITS America

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• Authors:
  • Mishima, D
  • Tagawa, K
  • Hisari, Y
  • SUGINO, K
• Conference:
  • 8th World Congress on Intelligent Transport Systems
  • Location: Sydney, Australia
  • Date: 2001-9-30 to 2001-10-4
• Publication Date: 2001

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: 10p

Subject/Index Terms

• TRT Terms: Automatic vehicle identification; Automatic vehicle location; Data collection; Estimating; Global Positioning System; Highway traffic control systems; Intelligent transportation systems; Mean (Statistics); Mobile communication systems; Traffic data; Traffic volume; Travel time; Vehicle detectors; Vehicle occupancy; Velocity
• Identifier Terms: Hanshin Expressway
• Geographic Terms: Japan
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00964224
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 29 2003 12:00AM