It is illegal for any person to enter upon the property of another or into an area or structure on such property (whether such property, area, or structure is public or private) when such entrance is plainly forbidden by signs or otherwise or when the property, area, or structure is enclosed, except when such entrance is in line of duty or with the expressed or tacit consent of the owner or person in charge or otherwise by authority of law or ordinance.
(Prior Code, § 131.08)