AN ESTIMATION OF LINK TRAVEL TIME USING GPS AND GIS

A brief review of travel time measuring practices have been introduced with special emphasis on the link travel time derivation using GPS and GIS database. The major impetus of this research is to use the floating or 'idle' GPS-equipped probes whose original missions are quite specific, for example to be dispatched promptly on demand (using the automatic vehicle location technology), in estimating the link travel times of the network for which the traffic information service is under consideration. The approach used GPS, GIS and the wireless communication. The WGS 84 oriented GPS data have been converted for the Transverse Mercator oriented GIS database. An algorithm based on Oracle query has been developed for link travel time calculation. The proposed algorithm has been tested with actual field data, proving that errors lie within the 10%. Some future research agenda have been also suggested.

• Supplemental Notes:
  • Additional sponsorship provided by the Highway Engineering Exchange Program, the National Association of Regional Councils, and the Urban and Regional Information Systems Association.
• Corporate Authors:

  American Association of State Highway and Transportation Officials (AASHTO)

  444 North Capitol Street, NW
  Washington, DC  United States  20001

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Choi, Kunhee
  • Shin, C
  • Park, I
• Conference:
  • Integrating the Transportation Business Using GIS. Proceedings of the 1998 Geographic Information Systems for Transportation (GIS-T) Symposium
  • Location: Salt Lake City, Utah
  • Date: 1998-4-20 to 1998-4-22
• Publication Date: 1998-8

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 121-128

Subject/Index Terms

• TRT Terms: Algorithms; Automatic vehicle location; Geographic information systems; Global Positioning System; Intelligent transportation systems; Travel time
• Subject Areas: Highways; Operations and Traffic Management; Planning and Forecasting; I21: Planning of Transport Infrastructure;

Filing Info

• Accession Number: 00760749
• Record Type: Publication
• Files: TRIS, TRB, USDOT
• Created Date: Mar 7 1999 12:00AM