Urban Transportation Alternatives Evolution of Federal Policy : Report of Conferences Held February 23-26, 1975, at Airlie House, Virginia, and March 29-April 1, 1976, at Hunt Valley, Maryland, and Sponsored by the Urban Mass Transportation Administration, U.S. Department of Transportation by National Research Council (U.S.). Transportation Research Board. Committee on Public Transportation Planning and Development. Subcommittee on Definitions | Menrva Books | MenrvaBooks