Why Model? Why do we model the transportation network?ģ Why Model? 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 areasĪggregate Models Few zones Major highway planning only Computers available to large agencies 50’s Computer chip technology advances Federal government sponsorship Travel behavior surveys widespread Basic transit capability 60’s and 70’s 80’s and 90’s Shift to microcomputers More zones Detailed transit and HOV models Windows-based More disaggregation and detail GIS-based models Microsimulation 00’s The Transportation Model GIS Developer’s Kit ApplicationsĢ Why do we model the transportation network? September 2001 North Carolina MPO Conferenceġ Agenda Why Model? Why Jurisdictions Convert to TransCAD? 0 Tips, Trips, and Traps of TransCAD Modeling
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