KEY: U = data are unavailable (for
crossings by personal vehicle from both
Mexico
and
Canada
in
1994).
NOTES: For definitions see table 1-6 in appendix B.
SOURCE: U.S.
Department of Transportation, Research and Innovative Technology
Administration, Bureau of Transportation Statistics, using data from Department
of Homeland Security, U.S. Customs and Border Protection, Office of Management
Reporting, Data Warehouse CD-ROM, May 2005.
