Tex. Transp. Code § 391.034
(a) A commercial sign that is erected or maintained in violation of this chapter:
(b) On written notice by certified mail from the department, an owner of a commercial sign that is a public nuisance under Subsection (a) shall remove the sign. If the owner does not remove the sign within 45 days of the date of the notice, the department may direct the attorney general to apply for an injunction to:
Acts 1995, 74th Leg., ch. 165, Sec. 1, eff. Sept. 1, 1995.
Acts 2017, 85th Leg., R.S., Ch. 964 (S.B. 2006), Sec. 10, eff. June 15, 2017.