(a) The commission by rule may regulate the orderly and effective display of commercial signs consistent with the customary use of commercial signs in this state in an area in which the land use:
(1) is designated industrial or commercial under authority of law; and
(2) is not so designated but in which the land use is consistent with areas designated industrial or commercial in the manner provided by Section 391.031(c).
(b) The commission may agree with the secretary of the United States Department of Transportation to regulate the orderly and effective display of commercial signs in an area described by Subsection (a).