Civil Infrastructure

American Association of State Highway and Transportation Officials
American Council of Engineering Companies
American Public Works Association
American Railway Engineering and Maintenance-of-Way Association
American Road & Transportation Builders Association
American Society of Civil Engineers
American Society of Highway Engineers
American Traffic Safety Services Association
Federal Highway Administration
Government Research Center
Institute of Transportation Engineers
Intelligent Transportation Society of America
National Society of Professional Engineers
National Transportation Safety Board
Strategic Highway Research Program
Texas Transportation Institute
Transportation Research Board
Turner-Fairbanks Highway Research Center
US Department of Transportation