[n] - the federal department that institutes and coordinates national transportation programs
(DOT) Federal agency which, in cooperation with the U.S. Access Board, develops standards for transportation vehicles, including over-the-road buses, under the Americans with Disabilities Act (ADA).
Transportation noun the United States federal department that institutes and coordinates national transportation programs; created in 1966
the department of the U.S. federal government that coordinates and institutes national transportation programs. Abbr.: DOT