presenta tion A Explore Detroit Region Explore Detroit Region Trip Chaining Behavior Trip Chaining Behavior Presented by Presented by Liyang Feng & Jilan Chen Liyang Feng & Jilan Chen Southeast Michigan Council of Governments Southeast Michigan Council of Governments The 12 The 12 th th TRB Transportation Planning Applications Conference TRB Transportation Planning Applications Conference Houston, TX Houston, TX May 17-21, 2009 May 17-21, 2009
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PresentationA Explore Detroit Region Trip Chaining Behavior Presented by Liyang Feng & Jilan Chen Southeast Michigan Council of Governments The 12 th TRB.
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presentationA
Explore Detroit Region Explore Detroit Region Trip Chaining BehaviorTrip Chaining Behavior
Presented byPresented by
Liyang Feng & Jilan ChenLiyang Feng & Jilan ChenSoutheast Michigan Council of GovernmentsSoutheast Michigan Council of Governments
• Seven counties: Wayne, Washtenaw, Oakland, Seven counties: Wayne, Washtenaw, Oakland, Macomb, Livingston, St. Clair, and MonroeMacomb, Livingston, St. Clair, and Monroe
• Employment: 2.16 millionsEmployment: 2.16 millions• Population: 4.83 millionsPopulation: 4.83 millions• Households: 1.85 millions Population:Households: 1.85 millions Population:• Estimated week day vehicle trips: 18.0 millionsEstimated week day vehicle trips: 18.0 millions• Regional VMT: 137.5 millionsRegional VMT: 137.5 millions
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Challenges in Challenges in SEMCOG RegionSEMCOG Region
• Declining manufactory industryDeclining manufactory industry
• Higher unemployment rate (7.6% vs. Higher unemployment rate (7.6% vs. 11.6%)11.6%)
• How Detroit region differs from How Detroit region differs from other metro areaother metro area
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Trip and Tour DefinitionTrip and Tour Definition
• Three basic trip definition: HBW, Three basic trip definition: HBW, HBO, NHBHBO, NHB
• Tour definition: Tour, Sub TourTour definition: Tour, Sub Tour
• Primary mode of tourPrimary mode of tour
• Primary destinationPrimary destination
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Tour PatternTour Pattern
Home
Social
Eat Meal
Shop
Work
7 6
1
5 4
2
3
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Mode and DestinationMode and Destination
• Primary mode: School bus, Park & Primary mode: School bus, Park & Ride, W-Transit, Drive alone, Shared Ride, W-Transit, Drive alone, Shared 2/3+, Bike, Walk, Other2/3+, Bike, Walk, Other
• Primary destination: decision tree Primary destination: decision tree includes place, activity and timeincludes place, activity and time
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Analysis ReferenceAnalysis Reference
• Reference data provided by DRCOGReference data provided by DRCOG
• Denver Regional 1996 TBI: Activity based Denver Regional 1996 TBI: Activity based survey with 4,166 HHs plus 667 transit survey with 4,166 HHs plus 667 transit focused HHsfocused HHs
• Different in population, area size and Different in population, area size and employment, and industriesemployment, and industries
• Similar in survey designSimilar in survey design
– population: 4.8 m Vs. 1.8 mpopulation: 4.8 m Vs. 1.8 m
– Households: 2.0 m Vs. 0.9 mHouseholds: 2.0 m Vs. 0.9 m
– industriesindustries
• Similar in survey designSimilar in survey design
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Data ProcessingData Processing
• Maintained similar variable definition Maintained similar variable definition
• Maintained same tour and sub-tour Maintained same tour and sub-tour definitiondefinition
• Adopted same primary mode of tour Adopted same primary mode of tour and primary destination definition and primary destination definition logic.logic.
• Two regions are almost identical on the Two regions are almost identical on the distribution of primary mode of tour, and distribution of primary mode of tour, and the distribution of number of trips per tourthe distribution of number of trips per tour
• Activities at primary destination are similar Activities at primary destination are similar except for work activities. Detroit region except for work activities. Detroit region has lower % than Denver regionhas lower % than Denver region
• Duration of activities show a different Duration of activities show a different distributiondistribution
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ABM ImplicationsABM Implications
• Transferable model parametersTransferable model parameters
• More efficient surveysMore efficient surveys
• More efficient model development More efficient model development processprocess
• Common platformsCommon platforms
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Next StepsNext Steps
• Explore and compare other travel Explore and compare other travel characteristics in the regions, such as characteristics in the regions, such as primary activities and number of trips primary activities and number of trips distribution, temporal distribution of distribution, temporal distribution of tours and activitiestours and activities
• Compare 2005 survey to SEMCOG Compare 2005 survey to SEMCOG 1994 HH survey.1994 HH survey.