If any person knowingly and intentionally posts No Trespassing signs on the land of another without the permission of a person authorized to post such signs on that land, he shall be guilty of a Class 3 misdemeanor.
Validity of signs forbidding trespass; penalty
Va. Code Ann. § 18.2-119.1, under Chapter 5. Crimes Against Property..
Va. Code Ann. § 18.2-119.1