Leveraging GIS Technology and Web-Based Images: A Low-Cost Approach for Studying Congestion Hotspots

This paper describes the use of geographic information system (GIS) technology and web-based images to identify the factors of and mitigation measures for recurring congestion. The GIS map, which was created with the Arc GIS platform, plotted recurring congestion corridors (labeled herein as hotspots) from a tentative list of Maryland State Highway Administration (SHA) priority locations. The locations included 95 intersections/ramp junctions and 31 highway segments. The GIS map allows users to obtain hyperlinked data (such as images, turning-movement counts, travel times, and roadway schematics) for individual hotspots. The layers of hotspots were converted to a keyhole mark-up list (KML) file that could be used in Google Earth’s 3-D environment, which enables the traffic planner to use free and web-based satellite and street-level images to determine the probable causes of and mitigation measures for recurring congestion. The use of the ubiquitous street-level images in Google Earth reduces the cost of data collection, particularly spatial images of the hotspots.


  • English

Media Info

  • Media Type: DVD
  • Features: Figures; References;
  • Pagination: 16p
  • Monograph Title: TRB 89th Annual Meeting Compendium of Papers DVD

Subject/Index Terms

Filing Info

  • Accession Number: 01155778
  • Record Type: Publication
  • Report/Paper Numbers: 10-1561
  • Files: BTRIS, TRIS, TRB
  • Created Date: Jan 25 2010 10:41AM