Tex. Transportation Code § 441.180: MANNER OF REPAYMENT.

(a) The board may provide for the payment of the principal of and interest on the bonds by one or more of the following methods:

(1) imposition and collection of ad valorem taxes;

(2) adoption of a plan of taxation authorized by Sections 51.502-51.506, Water Code, as provided by those sections; or

(3) pledging all or part of the fees under Section 441.197.

(b) In this chapter, a reference to ad valorem taxes includes a reference to any other tax the board imposes as provided by this chapter.

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