Florida’s Turnpike State Model: Development and Validation of an Integrated Land Use and Travel Forecasting Model

In 2005, Florida’s Turnpike Enterprise began development of a new statewide travel model that could be used to test the feasibility of potential intercity toll facilities that extended beyond the boundaries of available urban and regional travel models. This model was developed around a database framework in which the model components rely directly on databases that are being maintained by a variety of other parties. Given the scale of effort needed to abstract from and integrate these data, the demand model structure was kept simple but designed to incorporate elements that provide the needed functionality: a GIS-based network, a simple travel demand modeling procedure and a simplified but integrated land use model. The model data were integrated in a form that creates back links to the underlying data so that the model can be easily updated as those data are updated. However, special procedures were also developed to track and correct errors and other anomalies that were uncovered in those data during the model validation stage. In some cases, these issues are result of the data being used in a way that they were not originally intended to be used and in other cases they are simply due to inadvertent errors in the underlying data. Validation of the underlying data is an especially critical issue for statewide models whose coverage and scale can otherwise mask important details. This is evidenced in the very significant improvements in model fit that resulted from addressing the issues that were identified through the Florida model’s validation effort.

Language

  • English

Media Info

  • Media Type: CD-ROM
  • Features: Figures; Maps; References;
  • Pagination: 14p
  • Monograph Title: TRB 86th Annual Meeting Compendium of Papers CD-ROM

Subject/Index Terms

Filing Info

  • Accession Number: 01047020
  • Record Type: Publication
  • Report/Paper Numbers: 07-0790
  • Files: TRIS, TRB
  • Created Date: Feb 8 2007 5:23PM