摘要: |
The 1995 Nationwide Personal Transportation Survey (NPTS) and 1995 American Travel Survey (ATS) provide rich sources of data on travel in the United States. While the survey objectives differ, each provides a good foundation for further research into many different topics. The purpose of this paper is to identify regional variations in long-distance travel in the United States as reported in the 1995 NPTS and the 1995 ATS. Specifically, the paper seeks to answer the question "How does long-distance travel differ when we consider reports from respondents in geographically diverse regions of the United States, such as New York and Oklahoma?" This is accomplished through comparisons of national- and state-level data collected through both studies. Comparisons of reported long-distance trips in each data set for predefined geographic regions are performed in order to identify differences in trip length, purpose, mode, and demographic characteristics of the travelers. By focusing the analysis at the state level for geographically diverse areas, a comparison of results will show where regional variations in long-distance travel exist. In addition to comparing the data across geographic regions within each data set, this investigation also, by default, looks at differences reported in long-distance travel between the two data sets at the national level. Given the differences in methods used to collect the data, some variations in long-distance travel are expected. By using both data sets in this analysis, it is expected that any reporting shortfalls in one data set will be compensated by coverage in the other data set. The result expected from including both data sets in the analysis is a comprehensive picture of regional variations in long-distance travel. |