American Society of Civil Engineers (ASCE)http://www.asce.org/

American Society of Highway Engineers (ASHE)http://www.highwayengineers.org/

Council of University Transportation Centers (CUTC)http://cutc.tamu.edu/

Federal Highway Administration (FHWA)http://www.fhwa.dot.gov/

Federal Transit Administration (FTA) http://www.fta.dot.gov/

Institute of Transportation Engineers (ITE)http://www.ite.org/

Intelligent Transportation Systems (ITS)http://www.its.dot.gov/index.htm

Ohio Department of Transportation (ODOT) http://www.dot.state.oh.us/

Research and Innovative Technology Administration (RITA) http://www.rita.dot.gov/

Transportation Research Board (TRB) http://trb.org/

TRB Research Needs Statements (RNS) Database: An excellent source of timely and critical research topics. http://rns.trb.org/

U.S. Department of Transportation (DOT)http://www.dot.gov/

University Transportation Centers (UTC)http://utc.dot.gov/