The Federal Highway Administration provides high-quality
information to serve Government, industry, and the public
in a manner that promotes public understanding.
Standards and policies are used to ensure and maximize the
quality, objectivity, utility, and integrity of its information.
FHWA periodically reviews quality issues and adjusts its programs
and processes to ensure continuous quality improvement.
Federal Highway Administration
U.S. Department of Transportation
400 7th Street, S.W. (HOP)
Washington, DC 20590
Toll-Free "Help Line" 866-367-7487
Publication No.: FHWA-OP-04-020
EDL No.: 13993
Table of Contents | List of Tables | List of Figures