MODELING COMMUTING PATTERNS IN CHICAGO IN A GIS ENVIRONMENT: A JOB ACCESSIBILITY PERSPECTIVE

Using the recently released Census for Transportation Planning Package (CTPP, 1990) this research utilizes GIS tools to explain intraurban variations of commuting in Chicago (Illinois) at the Traffic Analysis Zone (TAZ) level. While commute times are directly available from the CTPP, commute distances are derived from the shortest time distances through actual road networks. GIS surface modeling is used to identify the main employment center (CBD) and other subcenters. The explanations of commute times and distances are attempted by various measures of job accessibility: the jobs--housing balance ratio defined in a floating catchment area, distances from the CBD and subcenters, and a gravity-based index that takes the effects of all jobs into account. These measurements better explain how far people commute than how much time they spend on commuting. The best model explains over 50% of the variation of commuting among 7,835 TAZs; the existing literature at best explains less than 30%.

  • Availability:
  • Corporate Authors:

    Blackwell Publishing

    350 Main Street
    Malden, MA  United States  02148
  • Authors:
    • Wang, Fujian
  • Publication Date: 2000-2

Language

  • English

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 120-133
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00798669
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 5 2000 12:00AM