APA (7th ed.) Citation

United States. Federal Highway Administration. (2009). Red-signal enforcement lights. U.S. Dept. of Transportation, Federal Highway Administration.

Chicago Style (17th ed.) Citation

United States. Federal Highway Administration. Red-signal Enforcement Lights. [Washington, D.C.]: U.S. Dept. of Transportation, Federal Highway Administration, 2009.

MLA (9th ed.) Citation

United States. Federal Highway Administration. Red-signal Enforcement Lights. U.S. Dept. of Transportation, Federal Highway Administration, 2009.