overview of cmap’s advanced travel model cadre
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Overview of CMAP’s Advanced Travel Model Cadre . Kermit Wies, Deputy Executive Director for Research and Analysis AMPO Modeling Group, November 2010. Why Advance the CMAP Models?. Answer modern urban planning questions How do people arrange their activities? - PowerPoint PPT PresentationTRANSCRIPT
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OVERVIEW OF CMAP’S ADVANCED TRAVEL MODEL CADRE
Kermit Wies, Deputy Executive Director for Research and AnalysisAMPO Modeling Group, November 2010
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Why Advance the CMAP Models?
O Answer modern urban planning questionsO How do people arrange their activities?O What factors affect their choices?O How sensitive are they to change?
O Keep our methods “state-of-the art”O Advanced models underway at most large
MPOsO Take advantage of research partnershipsO Show off
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Who is the “CMAP Modeling Cadre”?
O The (growing) team of advanced modeling experts that contribute to CMAP’s advanced model system
O Original 5 members authored the “Strategic Plan for Advanced Model Development”
O Two consultant contracts for Freight and Pricing have been issued
O Federal research collaborations underway
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CMAP’s Strategic Plan for Advanced Model Development
O IntroductionO Model management principles
O Three ChaptersO Policy ResponseO Data DevelopmentO Computing Environment
O Two AppendicesO Behavioral model integrationO Demand/Supply model integration
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CMAP’s Model Management Principles
OUltimate Goal: Complete activity and travel microsimulation
O Incremental coupling : agent-based demand and supply
OPersistent attention to model integration
(the science)Model developers:
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OOngoing activity and travel survey programOOngoing performance data acquisitionORegional planning indicatorsOActive planning priorities
(the product)the customer:
CMAP’s Model Management Principles
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CHAPTER 1: POLICY RESPONSE
OTwo major sections:OPolicy analysis requirementsOAdvanced models response
capabilities
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Policy Analysis Requirements
O Regional Comprehensive Plan (Go To 2040)O Livable communitiesO Regional mobilityO Human capitalO Efficient governance
O Transportation Investments and StrategiesO Air quality conformityO Major capital projectsO Freight
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Advanced models response capabilitiesFirst Generation Second
GenerationPopulation Synthesis
Zonal DetailNetwork Detail
Long Term ChoicesActivity-based Tours
Freight SystemNetwork AssignmentEconomy and Land
UseAny policy analysis requiring alternatives evaluation or forecasting should start here.
Basiccomputational modules
Module coupling and integration
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CHAPTER 2: DATA DEVELOPMENT
OThree major sections:O Data required by advanced model featuresO Suggested data resourcesO Data development program
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Data required by advanced model features
Survey Data Spatial Data
Network Data
Internal personal travelExternal travelVisitor travelAirport travelFreight agentsTraffic microsimulationBike/Ped agents
Data development needed for an advanced model should start here.
Ongoing
survey progra
m
Coded and
complete
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Data Resource Requirements
O Survey DataO Household and visitor diariesO External and airport interceptsO Business enterprises, commodity flows, intermodal
O Spatial DataO Base and projections for:
O population, housing, employment, school, parking, hotels, touristO Network Data
O Full streets for GIS interpretationO Coded for static and dynamic assignment :
O Highway, transit, bicycle, pedestrian, freightO Traffic and ridership data
O counts, speed, travel time, queues for validating:O autos, trucks, transit, pedestrian, bicycles, external, intermodal
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Data Development ProgramO Internal ongoing survey work programO Freight business modelsO CensusO Purchase commercial datasetsO Data exchange with managers and
operators
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CHAPTER 3: COMPUTING ENVIRONMENT
O Algorithms, calculations and proceduresO Effective software and hardware
solutions
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Algorithms, calculations and procedures
O Calculating activity patternsO Computationally efficientO Individual decision making and interactionsO Continuous variation in coefficients
O Tour-based travel modelingO Bi-directional variationO Spatial chaining behavior
O Challenges remainO Practical logsum computationO Continuous network level-of-service and
equilibrium
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Effective Software and Hardware Solutions
OExamples of:O Common modeling frameworkO General software architectureO CPU distribution and threadingO Hardware configurationsO Staffing and qualifications
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TWO APPENDICES ON MODEL INTEGRATION
O “Intra” Activity-based model integrationO Focuses on problem of modeling
simultaneous or sequence-independent choices within different AB frameworks
O “Inter” demand – supply model integrationO Focuses on problem of exchange of
valid level-of-service and activity-based information between demand and supply frameworks.