Data are nonexistent.
Data are unavailable.
The number of total road vehicle kilometers for 1995 is an estimate. See Appendix B for explanation. Although vehicle kilometers for transit rail are nonexistent, vehicle kilometers for local motor bus are included under road, buses. Includes only kilometers traveled by domestic airlines under scheduled operations serving domestic and international flights. Main interurban road corridors comprise 25,190 kilometers or approximately 5 percent of the Mexican national highway network.