Tex. Transp. Code § 622.051
(a) A person may operate over a highway or road of this state a vehicle or combination of vehicles that is used exclusively for transporting poles required for the maintenance of electric power transmission and distribution lines if:
Acts 1995, 74th Leg., ch. 165, Sec. 1, eff. Sept. 1, 1995.
Amended by Acts 2001, 77th Leg., ch. 941, Sec. 37, eff. Sept. 1, 2001.