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National Household Travel Survey Data User Tools

National Household Travel Survey Data User Tools. Adella Santos FHWA-OFFICE OF HIGHWAY POLICY INFORMATION APDU 2008 ANNUAL CONFERENCE SEPTEMBER 25, 2008. Today’s Presentation. Public data: Purpose for Planning and Policy About the NHTS Data Travel Trends Data Content and data sets

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National Household Travel Survey Data User Tools

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  1. National Household Travel SurveyData User Tools Adella Santos FHWA-OFFICE OF HIGHWAY POLICY INFORMATION APDU 2008 ANNUAL CONFERENCE SEPTEMBER 25, 2008

  2. Today’s Presentation • Public data: Purpose for Planning and Policy • About the NHTS Data • Travel Trends • Data Content and data sets • Uses and Users • Data Products and User data Tools

  3. About the NHTS Data… • National Study on travel of the American Public • Add-On Program for States and metropolitan areas. • 40 Years of Travel Data • 1969, 1977, 1983, 1990, 1995, 2001, 2008 • Link between demographics, travel and vehicles. • Widely used inside and outside the transportation research, planning and policy communities.

  4. Planning and Policy: How do we get from here to there? v Use of a travel diary

  5. What do we ask? Core Travel Data Content • Household demographics (composition and income) • Person (Age, race, sex, ethnicity, worker & students status, citizenship, education) • Geography (urban, rural, suburban, state and national analyses) • Vehicles (Make, model, year, mileage alternative fuels) • Trips/Commute information (mode, occupancy, time of departure, purpose, work location and occupation, distance trip length)

  6. Travel Data Depends on: For Each Vehicle: Make (Hybrid/Alternative fuel) Model Age (year) How long owned* For Each Household: Number of people Number of drivers Number of workers Number of vehicles Income Race and Ethnicity For Each Person: Age Gender Driver status Worker Status Annual Miles Daily Travel Data: Purpose Mode Start/End time Distance Vehicle Occupancy Interstate use

  7. Trends in Travel Content: 2008 New and Improved Data • Shopping by Internet and deliveries to the household • Frequency of self-employed and work at home instead of traveling to workplace • Flexibility of arrival time at work Vehicle Make and model, whether hybrid or alternate fuel used • Travel to school detail to support Safe Routes to School program • Whether trip included travel on freeway/interstate and whether a toll was paid

  8. Internet shopping and the impact of purchases being delivered

  9. In 2001 we started to see a relationship on internet use and travel… Source: Contrino and McGuckin paper to be submitted TRB 2008

  10. Other sources show increased household purchases on-line… Average Number of On-Line Purchases per Month Source: USPS HDS data

  11. What are the effects on system use? • More Truck in Residential areas: • Congestion impacts • Safety Issues • Economic impacts

  12. Trend Issue: Fleet Penetration and use of Hybrid/Alternative fuel Vehicles • Since 1969 we have collected fleet characteristics (make/model/age of vehicle) • Since 2001, added value of vehicle efficiency (mpg) and gas cost • 2008, added Hybrid and alternate fuel use

  13. Fleet Characteristic and fuel cost are changing

  14. The Average Vehicle is 9 Years Old. Source: NHTS Data Series, 1977 - 2001

  15. NHTS 2001 and 2008 Data Sets • 2001 NHTS • - Household data set: 69,817 records, 188 variables • - Person data set: 160,758 records, 142 variables • - Daytrip data set: 642, records, 150 variables • - Vehicle data set: 139, 382 records, 92 variables • - 3 replicate weight files: each has 398 variables • - Contains 239 derived variables. • 2008 NHTS • - 150,000 Households (25,000 national Sample and 125,000 Add-On sample).

  16. Major Users and Uses Users Uses System Use Measures (congestion, Urban/rural) Travel Characteristics (Trends & Forecasting) Mode Use for Transit Planning, Bike/Pedestrian, Safety (Exposure rates) • Federal (DOT) • Federal (Non DOT) • State DOT • MPOs • Universities • Research Entities

  17. Other Measures • Provides data for forecasting and air quality analysis. • Tracks changes in fleet characteristics and use (e.g. Hybrids vehicles and effects of rising gas prices on travel) • Marks the effect of new technology/uses on travel behaviors (e.g. internet shopping and deliveries to homes.) • Policy effects in Travel (e.g. work at home workers with flexible arrival time.) • Rich in Demographics (e.g. travel demands specific population groups such as immigrants, elderly, school children, low income)

  18. NHTS Products • PUBLICATIONS: • Policy Briefs • State Profiles • Summary of Travel Trends • Our Nation’s Travel: Current Issues • Data Trends Data Set: 1990, 1995, 2001 • Data Tools • NHTS Website: http://nhts.ornl.gov (Community of exchange) • On Line Analysis Tool • Transferability Tool

  19. NHTS Policy Briefs

  20. State Profiles

  21. NHTS Website: http://nhts.ornl.gov.

  22. Please visit our website: http://nhts.ornl.gov

  23. Transferability Data Tool

  24. Accessing NHTS Products • State Profiles • Summary of Travel Trends and Our Nation’s Travel: Current Trends • Trends Database: CD • Policy Briefs: http://ornl.gov/publications.shtml#issueBriefs • Transferability • http://fmip.ornl.gov/nhts/ • On-line Analysis Tool:http://nhts.ornl.gov • SAS Data Set: http://nhts.ornl.gov/download.shtml

  25. National Household Travel Survey Thank You! Adella.Santos@dot.gov

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