American Association of State Highway and Transportation Officials (AASHTO)444 N. Capital St. NW
Washington, DC 20001
Link:
http://www.transportation.org/ A national organization representing highway transportation departments. Published "Guide for the Development of Bicycle Facilities" in 1999.
A national organization charged with protecting agricultural land. Technical information is available regarding land preservation strategies.
A national organization dedicated to protecting the interests of hikers and preserving footpaths and the natural environment. Information about volunteer recruitment, trail building, and maintenance is available.
A national organization leading the charge of preserving the nation's outstanding rivers and their landscape.