1. by Alain L. Kornhauser, PhD Professor, Operations Research & Financial Engineering Director, Program in Transportation Faculty Chair, PAVE (Princeton Autonomous Vehicle Engineering) Princeton University Presented at PAVE – Summer Workshop Princeton, NJ August 4-6, 2014 Sequential Transportation Modeling Process

2. 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 Best Practice Model (BPM), Urban Goods Movement ModelSurvey-based trip generatorsNCPuget Sound NYC Urban Goods Movement Model » Geographic Data Structures: Quad Tree Demo, More Demos,Quad Tree DemoMore Demos » CoPilot Network Editor – Data Sources: Housing Data: US CensusUS Census Employment Stats: State Employment BureaucraciesState Employment Bureaucracies Census Data for Transportation Planning: http://www.trbcensus.com/http://www.trbcensus.com/ Journey-to-Work US Census Travel Demand Survey ; List of Data SourcesUS Census Travel Demand Survey ;Sources Household Travel SurveySurvey Using GPS to Survey Travel: Ref 1 Ref 2 Stopher 3Ref 1Ref 2Stopher 3 Bureau of Economic AnalysisAnalysis

3. Typical Traffic Assignment Zone Map

4. – 0. Land Use Models NotesNotes – 1. Trip Generation Models: (What produces trips; what attracts trips) TCRP B-15 Characteristics of Urban Travel, Travel Model Improvement Program (TIMP), commercial trip generation software (Microtrans, demo), TransCAD TCRP B-15 Characteristics of Urban Travel TIMPMicrotransdemoTransCAD An example – 2. Trip Distribution Models NotesNotes – (What trips go from where to where) Summary, Summary Gravity model (Inverse Square) Gravity model Lincoln, NE Trip Distribution Model (Gamma Function) Lincoln – 3. Mode split NotesNotes – (What means of conveyance does each trip use) – 4. Traffic Assignment NotesNotes – (What route through which network does each trip take)