373.08 LOCKS.
   (a)   No bicycle shall remain unlocked when parked upon any public street, public sidewalk, public driveway, public playground or any other public property. Any unlocked bicycle on public property is subject to impoundment by the Police Department.
(1979 Code 75.06)
   (b)   Whoever violates any provision of this section is guilty of a minor misdemeanor on a first offense; on a second offense within one year after the first offense, the person is guilty of a misdemeanor of the fourth degree; on each subsequent offense within one year after the first offense, the person is guilty of a misdemeanor of the third degree.