Metropolitan Planning Organizations (MPO) 
  A metropolitan planning organization (MPO)  is a federally-mandated and federally-funded transportation policy-making  organization that is made up of representatives from local governments and  governmental transportation authorities. Federal law requires the  formation of an MPO for any urbanized area (UZA) with a population  greater than 50,000. Federal funding for transportation projects and  programs are channeled through this planning process. Congress created MPOs to ensure that existing  and future expenditures of federal funds for transportation projects and  programs are based on a continuing, cooperative, and comprehensive (“3‑C”)  planning process. 
  MPOs are charged with developing  a 20-year long-range transportation plan (LRTP) and a short-term (usually 2-6  years) program called the transportation improvement program (TIP) for each of  their respective regions. The seven MPOs of which Maryland jurisdictions  and agencies are members are listed below. The Maryland member  jurisdictions are listed beside each MPO (note that some MPOs cover multi-state  regions). The Maryland Department of Transportation is a member of each  of the MPOs listed.