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National Household Travel Survey Statewide Applications Heather Contrino Travel Surveys Team Lead Federal Highway Administration Office of Highway Policy Information May 10, 2007 TRB National Transportation Planning Applications Conference Daytona Beach, Florida
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About the NHTS… National Study on Passenger Travel –Passenger Travel is 82 percent of all VMT Conducted since 1969 –1969, 1977, 1983, 1990, 1995, 2001 All Travel, All Purposes, All Modes 2001 NHTS –Interviewed about 70,000 households –175,000 Persons –Travel recorded for an entire day
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For Each Vehicle: Make Model Age (year) How long owned* NHTS General Content For Each Household: Number of people Number of drivers Number of workers Number of vehicles Income For Each Person: Age Gender Driver status Worker Status Annual Miles Daily Travel Data: Origin and Destination address (for add-ons) Time trip started and ended Distance Means of transportation: 1.vehicle type 2.if household vehicle, which one 3.if transit, wait time 4.if transit, access and egress mode* Detailed purpose* Number of passengers on trip: Most recent trip for non-travelers (date)* Descriptive statistics –Households –People Drivers and Workers –Vehicles –Trips Travel Behavior –Mode share distribution –Travel time, speed, distance, –Work and Non-Work Travel Special Populations –Older Drivers –Bike and Pedestrian –People with Disabilities –New Immigrants
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State Involvement Statewide Corridor Planning MPO Coordination Statewide Forecasting Special Populations Research NHTS Add-On Program In 2001, State participation included –NY,WI, HI, TX, KY For 2008, the Add-On program elicited tremendous response –About 85,000 samples (currently) –FL,GA,SC,NC,VA,NY,WI,CA,IN –Many MPOs including Maricopa, Pima, Cedar Rapids, Pikes Peak, and Omaha.
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Example NHTS Applications Safety Planning – California Travel Demand Forecasting -Wisconsin Air Quality Analysis – New York Performance Measures - Virginia Special Studies - Florida Congestion Management – U.S. DOT
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Safety Planning - California Pedestrian Fatalities per Mile of Exposure Source: 2001 FARS pedestrian Fatalities and NHTS 2001 miles walked
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Statewide Forecasting - Wisconsin HBW Observed Vs Predicted Trip Length Frequency Source: 2001 NHTS Bruce Aunet, WI DOT & Cambridge Systematics Inc.
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Air Quality - New York Vehicle Starts, Trip Lengths by Time of Day and Vehicle Utilization Source: 2001 NHTS
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Performance Measures - Virginia Statewide Measures –Person Miles Traveled (PMT), Trip Rates, VMT, Mode share, Fatality Rates, vehicle fleet characteristics MPO Areas –Long Range Plan Development –MPO area performance measures Environmental Justice Analysis
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Mode Trip Length Distribution Trips by time of day Source: 2001 NHTS
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Special Studies - Florida Hurricane Evacuation Planning Weekend and Holiday Travel Planning Event Planning Seasonal Resident Impact Broward County, Florida Source: ACS 1999-2002, U.S. Census Bureau
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Congestion Management – US DOT Source: 2001 NHTS
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NHTS Products State Profiles Policy Briefs Trends Database Transferability On-line Analysis Tool Risk Assessment Tool –AAA Traffic Safety Foundation NHTS Trends CD-ROM
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Accessing NHTS Products State Profiles Policy Briefs: http://ornl.gov/publications.shtml#issueBriefs http://ornl.gov/publications.shtml#issueBriefs Trends Database: To be posted soon Transferability –http://fmip.ornl.gov/nhts/http://fmip.ornl.gov/nhts/ Risk Assessment Tool: –http://www.aaafoundation.org/trafficSTATS/http://www.aaafoundation.org/trafficSTATS/ On-line Analysis Tool: http://nhts.ornl.govhttp://nhts.ornl.gov –SAS Data Set: http://nhts.ornl.gov/download.shtml http://nhts.ornl.gov/download.shtml Contact Heather Contrino, FHWA
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Thank You! Heather Contrino 202-366-5060 Heather.Contrino@dot.gov
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