A SPATIOTEMPORAL REPRESENTATION OF TIME-DEPENDENT TRAFFIC DATA FOR INTELLIGENT TRANSPORTATION SYSTEMS APPLICATIONS

In this paper we are concerned with the storage and representation of spatiotemporal traffic data required for Intelligent Transportation System applications. Several data needs, specific for Intelligent Transportation System were identified and studied such as; link data, point data, zone data, and movement data. We interfaced a Geographic Information System package (MAPINFO) with a traffic simulator (DYNASMART) to emulate the traffic data collection process from actual systems. Moreover, a special device was built based on a Global Positioning System and a Geographic Information System database and used as a probe for real-time data collection. Data fusion issues are addressed such as the use of a road matching algorithm to filter inaccurate position data. Issues of efficiently storing large quantities of collected time-dependent traffic data are also discussed; an innovative data storage approach is introduced that fits the time-dependent data to polynomial functions. Finally, the issue of visualizing time dependent data is discussed.

• Corporate Authors:

  ITS America

  1100 17th Street, NW, 12th Floor
  Washington, DC  United States  20036
• Authors:
  • Ziliaskopoulos, A
  • Chudakov, L
  • Dedes, G
• Conference:
  • Intelligent Transportation: Realizing the Benefits. Proceedings of the 1996 Annual Meeting of ITS America.
  • Location: Houston, TX
  • Date: 1996-4-15 to 1996-4-18
• Publication Date: 1996

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 323-330

Subject/Index Terms

• TRT Terms: Algorithms; Analysis; Data collection; Data storage; Geographic information systems; Information storage and retrieval systems; Information, data, and knowledge; Intelligent transportation systems; Real time control; Real time data processing; Time dependence; Traffic data; Traffic simulation
• Old TRIS Terms: Data compilation; Geographical information systems; Time dependent functions
• Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management; Planning and Forecasting; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00724748
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 14 1996 12:00AM