Federal fleet
(3) For purposes of this subsection, the term “Federal fleet” means 20 or more light duty motor vehicles, located in a metropolitan statistical area or consolidated metropolitan statistical area, as established by the Bureau of the Census, with a 1980 population of more than 250,000, that are centrally fueled or capable of being centrally fueled and are owned, operated, leased, or otherwise controlled by or assigned to any Federal executive department, military department, Government corporation, independent establishment, or executive agency, the United States Postal Service, the Congress, the courts of the United States, or the Executive Office of the President. Such term does not include— (A) motor vehicles held for lease or rental to the general public; (B) motor vehicles used for motor vehicle manufacturer product evaluations or tests; (C) law enforcement vehicles; (D) emergency vehicles; (E) motor vehicles acquired and used for military purposes that the Secretary of Defense has certified to the Secretary must be exempt for national security reasons; or (F) nonroad vehicles, including farm and construction vehicles.