Research Triangle Institute (1991). 1990 Nationwide Personal Transportation Survey: User's Guide to the Public Use Tapes (Report No. FHWA-PL-92-007). United States. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/54056
Research Triangle Institute. 1990 Nationwide Personal Transportation Survey: User's Guide to the Public Use Tapes. Report no. FHWA-PL-92-007. United States. Federal Highway Administration, 1991. https://rosap.ntl.bts.gov/view/dot/54056.
Research Triangle Institute 1990 Nationwide Personal Transportation Survey: User's Guide to the Public Use Tapes. United States. Federal Highway Administration, 1991, Report no. FHWA-PL-92-007, ROSA P. https://rosap.ntl.bts.gov/view/dot/54056.
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User's Guide for the Public Use Tapes: 1990 Nationwide Personal Transportation Survey cover title
This report is part of a series of products from the 1990 Nationwide Personal Transportation Survey (NPTS). In the NPTS, information is collected on the amount and nature of personal travel in the U.S., as related to the demographics of persons and households. This report is designed to serve as documentation for the public use datafiles and, as such, includes sections on survey procedures and methodology, the survey questionnaire, the public use data formats, weighting the data, and comparability of the 1990 NPTS with earlier NPTS surveys and with other data sources. The report also includes sample tables from the 1990 NPTS data, a data codebook, a proc contents listing (for SAS tape users), a selection on estimating sampling errors, a glossary of NPTS terms, and other information needed by a user of the public use datafile.
Research Triangle Institute (1991). 1990 Nationwide Personal Transportation Survey: User's Guide to the Public Use Tapes (Report No. FHWA-PL-92-007). United States. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/54056
Research Triangle Institute. 1990 Nationwide Personal Transportation Survey: User's Guide to the Public Use Tapes. Report no. FHWA-PL-92-007. United States. Federal Highway Administration, 1991. https://rosap.ntl.bts.gov/view/dot/54056.
Research Triangle Institute 1990 Nationwide Personal Transportation Survey: User's Guide to the Public Use Tapes. United States. Federal Highway Administration, 1991, Report no. FHWA-PL-92-007, ROSA P. https://rosap.ntl.bts.gov/view/dot/54056.
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