31-28-20 Commercial or political campaign advertising--Violation as misdemeanor. 31-28-21 Signs on private property. 31-28-22 Prohibited sign as nuisance. 31-28-23 Tampering, molesting, or interfering with markers, signs, or control devices--Violation as misdemeanor--Liability for costs. 31-28-23.1 Civil penalty for tampering, removing, or interfering with highway marker, sign, or control device. 31-28-24