MEASUREMENT OF TRAVEL TIME USING VEHICLE HEIGHT INFORMATION

The authors have developed ultrasonic vehicle identification equipment that identifies vehicles as they pass on the road. This is accomplished by recording a vehicle profile, which consists of height data gathered from reflected ultrasound. With two such devices placed 1 or 2 km apart, the travel time of vehicles between two points can be determined once they pass the second device, which prepares a second profile and compares it with those received from the first device that have yet to be identified. In order to verify the viability of measuring travel time by this method, a field test of the vehicle-identification equipment was conducted in a snowy area. The travel times reported by the vehicle-identification equipment were compared with travel times actually measured by by visually reading the license plates at the same two points where the equipment being tested was located, and the validity of this system has been confirmed. This is an effective system for measuring travel time in an environment where sufficient accuracy is not obtainable with Automatic Vehicle Identification (AVI) machines because of heavy snow, and for measurement of travel time at relatively low cost and in a simple manner. For the covering abstract, see IRRD 490001.

• Corporate Authors:

  ERTICO

  326 Avenue Louis
  Brussels,   Belgium  B-1050

  ITS America

  1100 17th Street, NW, 12th Floor
  Washington, DC  United States  20036

  VERTIS

  TORANOMOM 34 MORI BUILDING 1-25-5
  TORANOMON, MINATOKU, TOKYO 105  Japan 
• Authors:
  • MARUYAMA, M
  • KIRYU, N
  • Izumi, T
• Conference:
  • MOBILITY FOR EVERYONE. 4TH WORLD CONGRESS ON INTELLIGENT TRANSPORT SYSTEMS, 21-24 OCTOBER 1997, BERLIN. (PAPER NO. 3157)
• Publication Date: 1997

Language

• English

Media Info

• Features: References;
• Pagination: 7 p.

Subject/Index Terms

• TRT Terms: Automatic vehicle identification; Conferences; Equipment; Height; License plates; Travel time; Trip length; Ultrasonics; Vehicles
• Geographic Terms: Japan
• ITRD Terms: 8767: Automatic vehicle identification; 8525: Conference; 3674: Equipment; 6489: Height; 8053: Japan; 697: Journey time; 1346: Number plate; 6739: Ultrasonic; 1255: Vehicle
• Subject Areas: Vehicles and Equipment;

Filing Info

• Accession Number: 00755810
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Nov 16 1998 12:00AM