Tex. Transp. Code § 452.358
Revenue in excess of amounts pledged under Section 452.357(a)(1) or (2) shall be used to:
Acts 1995, 74th Leg., ch. 165, Sec. 1, eff. Sept. 1, 1995.
Acts 2009, 81st Leg., R.S., Ch. 47 (S.B. 293), Sec. 2, eff. May 19, 2009.