Why Jurisdictions Convert to TransCAD? Why are agencies converting their travel models to TransCAD?. September 2001 North Carolina MPO Conference Agenda 2 Why Model? Why Jurisdictions Convert to TransCAD? The Transportation Model GIS Developer’s Kit Applications Why Model? Why do we model the transportation network? Why Model? 4 To consider the effects of land use, transportation, and air quality To determine infrastructure needs, costs, and timing as growth occurs To analyze land use and transportation alternatives To provide a consistent platform for travel forecasting Required by the federal government for metropolitan areas The History of Travel Forecasting Aggregate Models 50’s 60’s and 70’s 80’s and 90’s 00’s 5 Few zones Major highway planning only Computers available to large agencies Computer chip technology advances Federal government sponsorship Travel behavior surveys widespread Basic transit capability Shift to microcomputers More zones Detailed transit and HOV models Windows-based More disaggregation and detail GIS-based models Microsimulation. Tips, Trips, and Trapsof TransCAD Modeling LSA Associates, Inc.
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