Utah Code § 72-7-503: Advertising -- Permit required -- Penalty for violation.

(1) It is unlawful for any person to place any form of advertising upon any part of the public domain, or within 660 feet of a public highway, except within the corporate limits of a city or town, and except upon land in private ownership situated along the highway, without first receiving a permit from the department, if a state highway, or from the county executive, if a county road.

(2) Any person who violates this section is guilty of a class B misdemeanor.