National household travel survey data user tools
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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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National household travel survey data user tools

National Household Travel SurveyData User Tools

Adella Santos

FHWA-OFFICE OF HIGHWAY POLICY INFORMATION

APDU 2008 ANNUAL CONFERENCE

SEPTEMBER 25, 2008


Today s presentation

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


About the nhts data

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.


Planning and policy how do we get from here to there

Planning and Policy: How do we get from here to there?

v

Use of a travel diary


National household travel survey data user tools

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)


National household travel survey data user tools

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


National household travel survey data user tools

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


National household travel survey data user tools

Internet shopping and the impact of purchases being delivered


In 2001 we started to see a relationship on internet use and travel

In 2001 we started to see a relationship on internet use and travel…

Source: Contrino and McGuckin paper to be submitted TRB 2008


Other sources show increased household purchases on line

Other sources show increased household purchases on-line…

Average Number of On-Line Purchases per Month

Source: USPS HDS data


National household travel survey data user tools

What are the effects on system use?

  • More Truck in Residential areas:

  • Congestion impacts

  • Safety Issues

  • Economic impacts


National household travel survey data user tools

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


National household travel survey data user tools

Fleet Characteristic and fuel cost are changing


National household travel survey data user tools

The Average Vehicle is 9 Years Old.

Source: NHTS Data Series, 1977 - 2001


National household travel survey data user tools

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).


Major users and uses

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


National household travel survey data user tools

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)


National household travel survey data user tools

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


National household travel survey data user tools

NHTS Policy Briefs


National household travel survey data user tools

State Profiles


National household travel survey data user tools

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


National household travel survey data user tools

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


National household travel survey data user tools

Transferability Data Tool


Accessing nhts products

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


National household travel survey data user tools

National Household Travel Survey

Thank You!

[email protected]


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