Unauthorized presence is entering or remaining upon or in any public parking area, lot or business premises in violation of restrictions upon access plainly posted, in a manner reasonably likely to come to the attention of the public, indicating restricted business hours, restrictions upon public presence, intrusion, permissible activity or other limitations upon public access to the posted area or premises. Unauthorized presence is an unclassified Public Offense. (Ord. 83-75 § 2, 1983.)