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Validating an Interregional Travel Model: A Case Study in California

Validating an Interregional Travel Model: A Case Study in California. Nicholas J. Linesch Giovanni Circella Urban Land Use and Transportation Center Institute of Transportation Studies University of California, Davis TRB Planning Applications – 2011.05.08. Modeling. Inputs. Models.

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Validating an Interregional Travel Model: A Case Study in California

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  1. Validating an Interregional Travel Model: A Case Study in California Nicholas J. Linesch Giovanni Circella Urban Land Use and Transportation Center Institute of Transportation Studies University of California, Davis TRB Planning Applications – 2011.05.08

  2. Modeling

  3. Inputs Models Outputs Zone System Short Distance Personal Travel Model (SDPTM) Trip Lists Road Network Trip Tables Transit Network Loaded Network Long Distance Personal Travel Model (LDPTM) Population Travel Times and Costs Employment Short Distance Commercial Vehicle Model (SDCVM) Other Zonal Properties Summary Travel Statistics Maps Graphs Long Dist. Commercial Vehicle Model (LDCVM) External Travel Model (ETM)

  4. Data Flows *Idea from Russell Ackoff

  5. Long Distance MPO Interregional Definition: A long distance trip in the CSTDM is one that is greater than 100 miles *>50 miles for commercial vehicles Definition: An MPO interregional trip is any trip that crosses an MPO boundary 16.2% 16.6%

  6. Statewide Count Database 2008 WIM Stations Truck Stations TSN Stations PeMS Detectors

  7. Theory

  8. Theory

  9. Model Validation: Counts vs. VMT?

  10. Discussion • Can VMT be used for further model validation? • Is this strategy of VMT estimation helpful for policy involving GHG reduction strategies?

  11. Thank you Nicholas J. Linesch njlinesch@ucdavis.edu Modeler, Graduate Student Urban Land Use and Transportation Center University of California, Davis

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