GIS Methods and Tools for Bicycle and Pedestrian Crash Mapping and Analysis

Understanding the spatial nature of the crashes, many planners and policy makers throughout U.S. have become interested in using Geographic Information Systems (GIS) to map and analyze information on pedestrian and bicycle crashes. GIS is a promising tool to conduct analysis to identify areas where crashes have taken place and more clearly focus limited resources for countermeasures to reduce the number of bicycle and pedestrian crashes. By describing research efforts on GIS mapping and analysis of bicycle and pedestrian crashes of several high crash counties in Florida, this paper presents a systematic approach to bicycle and pedestrian crash mapping and analysis using GIS technology. A new crash mapping method locates crashes accurately based on street intersections and offset distance. In addition this method determines accurately the location of crashes that may match in multiple cities as well as provides techniques to increase crash mapping rates. Crash analysis methodologies are applied to mapped crashes at different geographical levels from countywide to intersection crash analysis. For the countywide crash analysis, cluster, trend, and proximity analysis are employed to understand general spatial/temporal patterns of the crashes. A systematic method based on linear and area density indexes identifies crash concentration areas in order to focus the analysis at the intersections and mid-block level. Intersection analysis uses new methods for characterizing crash attributes by GIS pie chart symbology which combines spatial and statistical methods to characterize crashes. This research is also focused on categorizing and analyzing contributing factors to crashes for the identified concentration zones. This analysis makes it possible to identify correlation between crashes and human, environmental, and socio-economic factors.


  • English

Media Info

  • Media Type: CD-ROM
  • Features: Figures; References; Tables;
  • Pagination: 20p
  • Monograph Title: TRB 86th Annual Meeting Compendium of Papers CD-ROM

Subject/Index Terms

Filing Info

  • Accession Number: 01044807
  • Record Type: Publication
  • Report/Paper Numbers: 07-3474
  • Files: BTRIS, TRIS, TRB
  • Created Date: Feb 8 2007 8:09PM