(a) No person on roller skates or riding in or by any means of any sled, toy vehicle, skateboard or similar device shall be permitted on any street, highway or public lot unless the same is designated and marked as a "play street" or "play lot."
(b) The Assistant City Manager, and in his absence the Chief of Police, shall have the authority to designate any street or lot a "play street" or "play lot." Any area so designated shall be conspicuously marked as such by an appropriate sign.
(c) 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.