validating an interregional travel model: a case study in california
DESCRIPTION
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. - PowerPoint PPT PresentationTRANSCRIPT
Validating an Interregional Travel Model: A Case Study in California
Nicholas J. LineschGiovanni Circella
Urban Land Use and Transportation Center Institute of Transportation Studies
University of California, Davis
TRB Planning Applications – 2011.05.08
Modeling
Inputs Models OutputsZone System Short Distance
Personal Travel Model(SDPTM)
Road NetworkTransit Network
PopulationEmploymentOther Zonal Properties
Long Distance Personal Travel Model
(LDPTM)
Short Distance Commercial Vehicle
Model(SDCVM)
Long Dist. Commercial Vehicle Model
(LDCVM)
External Travel Model(ETM)
Loaded Network
Travel Times and Costs
Summary Travel Statistics
Maps
Graphs
Trip Tables
Trip Lists
Data Flows
Data collection
Data processing
Data management
Data distribution
Feedback and assessment
Data Information Knowledge*Idea from Russell Ackoff
475
74
52 10
40 SDPTMSDCVMLDPTMLDCVMEXT
MPO InterregionalLong Distance
Intra-MPO travel
Inter-MPO travel
16.6%16.2%
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
Truck StationsTSN StationsPeMS Detectors
Statewide Count Database 2008
WIM Stations
Theory
Theory
Model Validation: Counts vs. VMT?
Discussion
• Can VMT be used for further model validation?
• Is this strategy of VMT estimation helpful for policy involving GHG reduction strategies?
Nicholas J. [email protected], Graduate StudentUrban Land Use and Transportation CenterUniversity of California, Davis
Thank you