National transportation statistics /

Description based on: Sept. 1978; title from cover.Vols. for <1993-> published: Washington, D.C. : U.S. Govt. Printing Office.1998 ed. available only online via the Internet.None published, 1995.Vols. for 1977-19 cover the 11 calendar years ending 1975-19 ; <1986-> cover multiple years from <1955->.Mode of access: Internet.Vols. for 1986- issued by: Transportation Systems Center; <1993-> by: Bureau of Transportation Statistics.Vols. for 1978-19 prepared by: Research and Special Programs Administration, Transportation Systems Center, Transportation Information Division, Statistical Information Reporting Branch; 1981 by: Transportation Systems Center, Transportation Information Management Division, Information Management Branch; 1982-198 by: Transportation Systems, Office of Information Resources, Center for Transportation Information; 198 -1985 by: Transportation Systems Center, Center for Transportation Information; 1986- by: U.S. Dept. of Transportation, Research and Special Programs Administration; <1993-> by: Research and Special Programs Administration, John A. Volpe National Transportation Systems Center, Center for Transportation Information.Formed by the union of: United States. Dept. of Transportation. Office of the Assistant Secretary for Policy, Plans, and International Affairs. Summary of national transportation statistics; and: Energy statistics