D.C. Code § 50-2637
Unlawfully parked vehicles.
It shall be a violation, to be adjudicated pursuant to Chapter 23 of this title [ §  50-2301.01 et seq.] for a person to park, leave unattended, or store a vehicle in violation of posted parking restrictions at a parking facility, as that term is defined in § 50-2602(4) , owned by the Washington Metropolitan Area Transit Authority.