Tex. Transportation Code § 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:

(1) imitates or resembles an official traffic-control device or railroad sign or signal;

(2) attempts to direct the movement of traffic; or

(3) hides from view or hinders the effectiveness of an official traffic-control device or railroad sign or signal.

(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.

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