The commission's responsibility for the regulation of commercial signs is only on highways on the interstate and primary systems, including interstate highways, state highways, and farm-to-market roads.

Acts 1995, 74th Leg., ch. 165, Sec. 1, eff. Sept. 1, 1995.

Acts 2017, 85th Leg., R.S., Ch. 964 (S.B. 2006), Sec. 11, eff. June 15, 2017.