United States Department of Transportation

Divisions

• Federal Aviation Administration (FAA)
  
• Federal Highway Administration (FHWA)
  
• Federal Motor Carrier Safety Administration (FMCSA)
  
• Federal Railroad Administration (FRA)
  
• Federal Transit Administration (FTA)
  
• Maritime Administration (MARAD)
  
• National Highway Traffic Safety Administration (NHTSA)
  
• Office of Inspector General (OIG)
  
• Office of the Secretary of Transportation (OST)
  
• Pipeline and Hazardous Materials Safety Administration (PHMSA)
  
• Research and Innovative Technology Administration (RITA)
  
• Saint Lawrence Seaway Development Corporation (SLSDC)
  Surface Transportation Board (STB)

Legislation

• 1806 – Cumberland Road
  
• 1862 – Pacific Railway Act
  
• 1887 – Interstate Commerce Act
  
• 1916 – Adamson Railway Labor Act
  
• 1935 – Motor Carrier Act
  
• 1946 – Federal Airport Act PL 79-377
  
• 1950 – Federal Aid to Highway PL 81-769
  
• 1954 – Saint Lawrence Seaway Act
  
• 1956 – Federal-Aid to Highway/Interstate Highway Act PL 84-627
  
• 1957 – Airways Modernization Act PL 85-133
  
• 1958 – Transportation Act PL 85-625
  
• 1958 – Federal Aviation Act PL 85-726
  
• 1959 – Airport Construction Act PL 86-72
  
• 1964 – Urban Mass Transportation Act PL 88-365
  
• 1965 – Highway Beautification Act PL 89-285
  
• 1966 – Department of Transportation established PL 89-670
  Uniform Time Act
  
• 1970 – Urban Mass Transportation Act PL 91-453
  
• 1970 – Rail Passenger Service Act PL 91-518
  
• 1970 – Airport and Airway Development Act PL 91-258
  
• 1973 – Federal Aid Highway Act PL 93-87
  
• 1973 – Amtrak Improvement Act PL 93-146
  
• 1973 – Federal Aid Highway Act PL 93-87
  
• 1974 – National Mass Transportation Assistance Act PL 93-503
  
• 1976 – Railroad Revitalization and Regulatory Reform Act PL 94-210
  
• 1976 – Hart-Scott-Rodino Antitrust Improvements Act PL 94-435
• 1978 – Airline Deregulation Act PL 95-504
  
• 1980 – Motor Carrier Act PL 96-296
  
• 1980 – Staggers Rail Act PL 96-448
  
• 1982 – Transportation Assistance Act PL 97-424
  
• 1982 – Bus Regulatory Reform Act PL 97-261
  
• 1987 – Surface Transportation Act PL 100-17
  
• 1991 – Intermodal Surface Transportation Efficiency Act PL 102-240
  
• 1998 – Transportation Equity Act for the 21st Century PL 105-178
  
• 2000 – Wendell H. Ford Aviation Investment and Reform Act for the 21st Century PL 106-181
  
• 2002 – Homeland Security Act (PL 107-296)
  
• 2005 – Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (PL 109-59)