(2) Vehicles and their contents brought into, while on, or being removed from restricted nonpublic areas are subject to inspection. A prominently displayed sign shall advise in advance that vehicles and their contents are subject to inspection when entering the restricted nonpublic area, while in the confines of the area, or when leaving the area. Persons entering these areas who object and refuse to consent to the inspection of the vehicle, its contents, or both, may be denied entry; after entering the area without objection, consent shall be implied. A full search of a person and any vehicle driven or occupied by the person may accompany an arrest.