The following is a complete list of BTS working papers. Copies of working papers can be obtained by e-mailing the designated contact person for that paper, or the BTS Information service at answers@bts.gov.
NOTE: The views presented in these working papers are those of the authors and not necessarily the views of the U.S. Department of Transportation, Bureau of Transportation Statistics. The results reported in these papers are deemed preliminary and should be treated as such.
