A department of transportation (DOT or DoT) is a government agency responsible for managing transportation. The term is primarily used in the United States to describe a transportation authority that coordinates or oversees transportation-related matters within its jurisdiction.
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.[1]
Though the term "Department of Transportation" is most associated with the United States,[citation needed] the term has been used in various forms for other countries' transportation authorities.