Department of transportation

In the United States, the largest DOT is the United States Department of Transportation, a federal agency that oversees interstate travel and numerous other transportation agencies.

All U.S. states have their DOTs, responsible for managing and overseeing transportation, transportation-related infrastructure, and transportation safety in their respective states. They provide enforcement through DOT officers within their respective jurisdictions.

List of U.S. state and insular area departments of transportation

• Alabama Department of Transportation (ALDOT)
• Alaska Department of Transportation and Public Facilities (DOT&PF)
• Arizona Department of Transportation (ADOT)
• Arkansas Department of Transportation (ARDOT)
• California Department of Transportation (Caltrans)
• Colorado Department of Transportation (CDOT)
• Connecticut
  • Connecticut Department of Transportation (CTDOT) - roads, bridges, rail, public transit
  • Connecticut Airport Authority (CAA) - airports
  • Connecticut Port Authority (CPA) - seaports
• Delaware Department of Transportation (DelDOT)
• Florida Department of Transportation (FDOT)
• Georgia Department of Transportation (GDOT)
• Hawaii Department of Transportation (HDOT)
• Idaho Transportation Department (ITD)
• Illinois Department of Transportation (IDOT)
• Indiana Department of Transportation (INDOT)
• Iowa Department of Transportation (Iowa DOT)
• Kansas Department of Transportation (KDOT)
• Kentucky Transportation Cabinet (KYTC)
• Louisiana Department of Transportation and Development (DOTD)
• Maine Department of Transportation (MaineDOT)
• Maryland Department of Transportation (MDOT)
• Massachusetts Department of Transportation (MassDOT)
• Michigan Department of Transportation (MDOT)
• Minnesota Department of Transportation (MnDOT)
• Mississippi Department of Transportation (MDOT)
• Missouri Department of Transportation (MoDOT)
• Montana Department of Transportation (MDT)
• Nebraska
  • Nebraska Department of Transportation (NDOT) - roads, rail, and public transportation
  • Nebraska Department of Aeronautics - airports
  • Nebraska Game and Parks Commission - waterways
• Nevada Department of Transportation (NDOT)
• New Hampshire Department of Transportation (NHDOT)
• New Jersey Department of Transportation (NJDOT)
• New Mexico Department of Transportation (NMDOT)
• New York
  • New York State Department of Transportation (NYSDOT)
  • New York State Thruway Authority (NYSTA)
  • New York State Bridge Authority (NYSBA)
• North Carolina Department of Transportation (NCDOT)
• North Dakota Department of Transportation (NDDOT)
• Ohio Department of Transportation (ODOT)
• Oklahoma Department of Transportation (ODOT)
• Oregon Department of Transportation (ODOT)
• Pennsylvania Department of Transportation (PennDOT)
• Puerto Rico Department of Transportation and Public Works (DTOP)
• Rhode Island
  • Rhode Island Department of Transportation (RIDOT)
  • Rhode Island Turnpike and Bridge Authority (RITBA) - toll bridges
• South Carolina Department of Transportation (SCDOT)
• South Dakota Department of Transportation (SDDOT)
• Tennessee Department of Transportation (TDOT)
• Texas Department of Transportation (TxDOT)
• Utah Department of Transportation (UDOT)
• Vermont Agency of Transportation (VTrans)
• Virginia Department of Transportation (VDOT)
• Washington State Department of Transportation (WSDOT)
• West Virginia Department of Transportation (WVDOT)
• Wisconsin Department of Transportation (WisDOT)
• Wyoming Department of Transportation (WYDOT)