(a) No person on roller skates or riding in or by means of any sled, toy vehicle, skateboard or similar device shall go upon any roadway except while crossing a street on a crosswalk and except on streets set aside as play streets.
(b) Whoever violates 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.