If any person shall, without authority of law, go upon or remain upon the lands, buildings or premises of another, or any part, portion or area thereof, after having been forbidden to do so, either orally or in writing, by the owner, lessee, custodian or other person lawfully in charge thereof, or after been forbidden to do so by a sign or signs posted by such persons or by the holder of any easement of other right-of-way authorized by the instrument creating such interest to post such signs on such lands, structures, premises or part, portion or area thereof at a place or places where it or they may be reasonably seen, he shall be guilty of a Class 1 misdemeanor.