• Airports
• Associations
• Department of Transportation
  • State
• Metropolitan Planning Organizations
• Transit Systems
• Water Ports

Federal Government - Executive Branch

• The President
• The Vice President
• The Executive Office of the President
• The Cabinet
  • Department of Transportation
    • Office of the Secretary of Transportation (OST)
      • Office of the Assistant Secretary for Research and Technology (OST-R)
      • Bureau of Transportation Statistics
    • 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 the Inspector General (OIG)
    • Pipeline and Hazardous Materials Safety Administration (PHMSA)
    • Saint Lawrence Seaway Development Corporation (SLSDC)
    • Surface Transportation Board (STB)
  • Other Department's Principal Statistical Agencies
    • Bureau of Economic Analysis (BEA)
    • Bureau of Justice Statistics (BJS)
    • Bureau of Labor Statistics (BLS)
    • Bureau of the Census
    • Bureau of Transportation Statistics (BTS)
    • Energy Information Administration (EIA)
    • Economic Research Service (ERS)
    • Environmental Protection Agency (EPA)
    • Internal Revenue Service (IRS), Statistics of Income Division
    • National Agricultural Statistics Service (NASS)
    • National Center for Education Statistics (NCES)
    • National Center for Health Statistics (NCHS)
    • Office of Management and Budget (OMB)
    • Science Resources Statistics (SRS), National Science Foundation
    • Social Security Administration (SSA), Office of Research, Evaluation, and Statistics

Federal Government - Legislative Branch

• House Committee on Transportation and Infrastructure
• Senate Committee on Commerce, Science and Transportation