Telecommunications Handbook for Transportation Professionals: The Basics of Telecommunications

September 2004

FHWA Report No.: FHWA-HOP-04-034

Federal Highway Administration
U.S. Department of Transportation
400 7th Street, S.W. (HOP)
Washington, DC 20590
Toll-Free "Help Line" 866-367-7487
www.ops.fhwa.dot.gov