O.C.G.A. § 37-3-8 (2019)

Any person who loiters about or trespasses on the property of any state owned or state operated psychiatric hospital or drives or rides over the grounds or roads of such hospital property with horses, automobiles, bicycles, motorcycles, or other vehicles, except in accordance with such rules and regulations as may be posted under the authority of the board, commits the offense of criminal trespass.