Tex. Transp. Code § 22.0815
(b) A person commits an offense if, within the boundaries of an airport operated or controlled by a joint board for which the constituent agencies are populous home-rule municipalities, the person:
(c) An offense under this section is a Class B misdemeanor.
Acts 2007, 80th Leg., R.S., Ch. 921 (H.B. 3167), Sec. 15.001, eff. September 1, 2007.