QUICK-RESPONSE BYPASS FORECASTING FOR SMALL URBAN COMMUNITIES USING AN ECONOMIC GRAVITY MODEL FOR EXTERNAL TRIP ANALYSIS

The Iowa Department of Transportation routinely assesses the potential traffic impact of highway bypasses on small cities in the State. For a given city, this labor-intensive process may take from one-to-three person months to complete. With the implementation of Iowa's Commercial and Industrial Network, bypass analyses are becoming more frequent, and are now required for six-to-eight cities per year, placing a strain on limited planning staff resources. This paper describes a GIS-based modeling approach which can streamline and automate the process, thereby reducing resource requirements or increasing the number of studies that can be completed within a given time. The automated process also serves to promote consistency across projects. This paper also validates the new approach by comparing manual-based estimates of impact to those predicted by the new methodology.

Language

  • English

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 67-70
  • Monograph Title: CROSSROADS 2000 PROCEEDINGS

Subject/Index Terms

Filing Info

  • Accession Number: 00770466
  • Record Type: Publication
  • ISBN: 096523102X
  • Files: TRIS
  • Created Date: Oct 11 1999 12:00AM