Integrated Land - Use , Transportation and Environmental Modeling : Validation Case Studies

PDFTech ReportUVM TRC Report # 10-008Land useLand use modelsEnvironmental designEnvironmental engineeringEnvironmental impactsEnvironmental impact analysisMathematical modelsCase studiesVermontUniversity of Vermont. Transportation Research CenterSullivan, JimAultman-Hall, LisaTroy, AustinAzaria, DaleLawe, StephenUniversity of Vermont. Transportation Research CenterResource Systems Group, Inc.University Transportation Centers Program (U.S.)NTL-PLANNING AND POLICY-Land UseUS Transportation CollectionFor decades the transportation-planning research community has acknowledged the interactions between the evolution of our transportation systems and our land-use, and the need to unify the practices of land-use forecasting and travel-demand modeling (Giuliano 1989; Moore and Thorsnes, 1996; Boarnet and Chalermpong 2001; Cervero 2003). The traditional four-step travel-demand modeling (TDM) process was designed to estimate specific patterns of travel from aggregate spatial and demographic data for a region. Unfortunately, these models are also extensively used to forecast land-use, typically through simple isometric growth of an origin-destination trip matrix. The evolution of land-use patterns, though, is affected by many economic, political, and social phenomena, and extrapolation of past patterns is often insufficient. In addition, there is a two-way interaction between the evolution of land-use and the transportation-network, which is not accounted for in the traditional TDM framework