Section 23-1-6
Signs, markers, and advertising – On rights-of-way.
Signs, markers, and advertising on the rights-of-way of state controlled highways are prohibited except those official signs or markers placed thereon by the State Department of Transportation or under its authority.
(Code 1923, §1344; Acts 1927, No. 347, p. 348; Code 1940, T. 23, §36.)