Texas Transportation Code - TRANSP § 544.006. Display of Unauthorized Signs, Signals, or Markings

(a) A person may not place, maintain, or display on or in view of a highway an unauthorized sign, signal, marking, or device that:

(b) A person may not place or maintain on a highway, and a public authority may not permit on a highway, a traffic sign or signal bearing commercial advertising.

(c) A person may not place or maintain a flashing light or flashing electric sign within 1,000 feet of an intersection except under a permit issued by the Texas Transportation Commission.

(d) This section does not prohibit a person from placing on private property adjacent to a highway a sign that gives useful directional information and that cannot be mistaken for an official sign.

(e) A sign, signal, light, or marking prohibited under this section is a public nuisance. The authority with jurisdiction over the highway may remove that sign, signal, light, or marking without notice.