URBAN CORRIDOR TRIP DISTRIBUTION MODELS: A STUDY OF THE CHICAGO AREA USING THE CENSUS UTPP DATA

This review focuses on the historical application of the Newtonian gravity formula to model human spatial interaction. The purpose of trip distribution models is to forecast an origin-destination (O-D) matrix. Several different models are briefly discussed herein. However, the trip distribution model highlighted in this report is the gravity model. This report consists of four major segments: 1) a theoretical discussion of the gravity model demonstrating how it can be interpreted as a dual logit model; 2) a discussion of the history of trip distribution models; 3) a practical discussion of the difficulties of calibrating the gravity model using least squares procedures; and 4) an empirical evaluation of alternative calibration methods. The methods evaluated include several variations of regression and elementary analyses, such as weighted regression to correct for heteroscedasticity. Also median and mean elementary analyses are examined; both two-way and three-way. Even though some of the results are not final, two-way elementary analyses using means with the resulting residuals regressed against corridor segment distances, appears to hold the most promise. /UMTA/

  • Supplemental Notes:
    • Sponsored by DOT, Urban Mass Transportation Administration.
  • Corporate Authors:

    University of Illinois, Chicago

    Urban Transportation Center, 412 South Peoria Street, Suite 340
    Chicago, IL  USA  60607
  • Authors:
    • Sen, A
  • Publication Date: 1977-9

Media Info

  • Pagination: 73 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00176582
  • Record Type: Publication
  • Source Agency: Urban Mass Transportation Administration
  • Report/Paper Numbers: UMTA-IL-11-0008-77-3Final Rpt.
  • Files: TRIS, USDOT
  • Created Date: Aug 19 1978 12:00AM