The purpose of the research described was to compare and evaluate operational land use forecasting models, and to suggest a procedure by which such comparisons and evaluations may be done for such models in the future. A thorough review of available operational models suggested two major types of models to be tested: the EMPIRIC, and the LOWRY derivative models. The method of testing involved two parts. First, the parameters of each model were estimated for a common data base. Second, each model was used to make forecasts of the impact of different policy inputs, and the responses of each model to these inputs were compared. The results of the parameter estimating suggest that either model can be made to fit a base period data-set rather well. The lack of any explicit macro-behavioral structure to the EMPIRIC model makes interpretation of its parameters somewhat difficult. DRAM, the LOWRY derivative model which was tested, has a rather clear macro-behavioral structure and yielded parameters consistent with the theory underlying that structure. With regard to the policy tests, EMPIRIC was found to be very insensitive to changes in inputs. DRAM, by contrast, was properly sensitive to all the various policies tested. All in all, the testing of different models on a common data-set was a good method for comparison and evaluation.

  • Corporate Authors:

    University of Pennsylvania, Philadelphia

    Department of City and Regional Planning, 210 S 34th Street
    Philadelphia, PA  United States  19104-6311

    Department of Transportation

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    National Science Foundation

    1800 G Street, NW
    Washington, DC  United States  20550
  • Authors:
    • Putman, S H
  • Publication Date: 1976-10

Media Info

  • Pagination: 134 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00154768
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: DOT/TPI/10-77-07 Final Rpt.
  • Contract Numbers: NSF-GI-38978
  • Files: NTIS, TRIS, USDOT
  • Created Date: Jun 17 1977 12:00AM