Sequential Transportation Modeling Process

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Presentation transcript:

Sequential Transportation Modeling Process Basic Modeling Steps: “4-Step Process”: 0. Land Use. Transportation facilities & current travel inventory 1. Trip Generation 2. Trip Distribution 3. Mode Split 4. Travel Assignment Input: Socio-economic data (Land-use, demographic, historic travel behavior) Data structures Geographic organization Traffic Assignment Zones Homogeneous Land Uses: Survey-based trip generators, Travel Demand Model for: NC, Puget Sound, NYC , NYC 2040 Plan, Best Practice Model (BPM) (Florida) , Urban Goods Movement Model Geographic Data Structures: Quad Tree Demo, More Demos, CoPilot Network Editor Data Sources: Housing Data: US Census Employment Stats: State Employment Bureaucracies Census Data for Transportation Planning: http://www.trbcensus.com/ Journey-to-Work US Census Travel Demand Survey ; List of Data Sources Household Travel Survey Using GPS to Survey Travel: Stopher 3 Bureau of Economic Analysis Week 3

Land Use Models Notes from last week Trip Generation Models: Notes (Page 6) TCRP B-15 Characteristics of Urban Travel , Travel Model Improvement Program (TIMP), commercial trip generation software (Microtrans, demo), TransCAD An example LincolnTravelDemandModel Trip Distribution Models Notes Gravity model (Inverse Square) Lincoln, NE Trip Distribution Model (Gamma Function) Mode split Week 4