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Nationwide Personal Transportation Study, 1977 [United States] (ICPSR 7992)

Published: Jan 12, 2006

Principal Investigator(s):
United States Department of Transportation. Federal Highway Administration


Version V1

The Nationwide Personal Transportation Study (NPTS) was designed to collect information on all trips taken during a designated 24-hour period and some additional detail on trips of 75 miles or more during the preceding 14-day period. Data were also gathered on the availability and use of public transportation, types of motorized vehicles available to the household, and characteristics of the trips taken including mode, purpose, miles traveled, time required, and persons on the trip. Also provided is information about trips taken by persons who commute to and/or from their job. There are 32 files, covering the following eight areas for each year quarter: Household Characteristics (Parts 1, 9, 17, and 25), Household Member Characteristics (Parts 2, 10, 18, and 26), Household Vehicle Information (Parts 3, 11, 19, and 27), Occupation and Travel-to-Work Data (Parts 4, 12, 20, and 28), Travel Day Trip Data (Parts 5, 13, 21, and 29), Fourteen-Day Travel Period Trips (Parts 6, 14, 22, and 30), Stop Data for Fourteen-Day Travel Period Trips (Parts 7, 15, 23, and 31), and Annual Long-Trip Data (Parts 8, 16, 24, and 32) compiled from the National Household Travel Survey for the 13,365 households common to both studies. Demographic information in the Household Member Characteristics files includes age, sex, race, marital status, household relationship, and educational attainment.

United States Department of Transportation. Federal Highway Administration. Nationwide Personal Transportation Study, 1977 [United States]. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2006-01-12.

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1977 -- 1978

(1) Each household, person, and trip reported in these files was assigned a weight. Weighting instructions are provided in pages 34-50 of the machine-readable documentation.

A stratified multistage cluster sample was used to select 24,466 households, 3,084 of which were not interviewed. All households included in the sample had previously been interviewed for the Current Population Survey.

Civilian noninstitutional population of the United States.

personal interviews and the National Household Travel Survey conducted by United States Department of Transportation, Bureau of Transportation Statistics

survey data



2006-01-12 All files were removed from dataset 33 and flagged as study-level files, so that they will accompany all downloads.


  • Data in this collection are available only to users at ICPSR member institutions.

  • The citation of this study may have changed due to the new version control system that has been implemented.
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