The Department of Transportation (DOT) is a United States federal Cabinet department responsible for ensuring a fast, safe, efficient, accessible, and convenient transportation system. Established on October 15, 1966, it replaced the former Department of Transportation (DOT-1), which was created during World War II but dismantled after the war's end. The DOT consolidated nine transportation-related federal departments into a single department. Since its establishment in 1966, the DOT has been operating under various presidential administrations, including that of 1980. The agency is headquartered in Washington, D.C., and its mission encompasses aviation, highways, maritime, motor carrier safety, rail, transit systems, pipelines, hazardous materials response, and ensuring the safety of all transportation modes in the U.S.