Va. Code Ann. § 18.2-509

Any person in any motor vehicle or otherwise who, between a half hour after sunset on any day and a half hour before sunrise the following day, employs a light attached to such vehicle, or employs a spotlight to cast a light beyond the surface of the roadway upon any poultry house or other building inhabited by animals that causes such animals to panic or become injured, except upon his own land or upon private land on which he has permission, shall be guilty of a Class 4 misdemeanor.