40 U.S.C. § 8102
The Attorney General and the Secretary of the Treasury may prohibit—
- (1)a vehicle from parking or standing on a street or roadway adjacent to a building in the District of Columbia—
- (A)at least partly owned or possessed by, or leased to, the Federal Government; and
- (B)used by law enforcement authorities subject to their jurisdiction; and
- (2)a person or entity from conducting business on property immediately adjacent to a building described in paragraph (1).