Michigan Department of Transportation (MDOT) - http://www.michigan.gov/mdot

Southeast Michigan Council of Governments (SEMCOG) - http://www.semcog.org

Indiana Department of Transportation (INDOT) - http://www.in.gov/indot/

Wisconsin Department of Transportation (WisDOT) - http://www.dot.wisconsin.gov/

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

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

The Bureau of Transportation Statistics - http://www.bts.gov/

Environmental Protection Agency (EPA) - http://www.epa.gov/

NCHRP - Highway Capacity Manual Applications Guidebook - http://hcmguide.com/

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

Texas Transportation Institute (TTI) - http://tti.tamu.edu/


Professional Organizations

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

American Association of State Highway and Transportation Officials (AASHTO) - http://www.transportation.org/

American Planning Association (APA) - http://www.planning.org/