Tex. Transp. Code § 545.4121
(b) It is a defense to prosecution of an offense to which this section applies that the defendant provides to the court evidence satisfactory to the court that:
(1) at the time of the offense:
Added by Acts 2005, 79th Leg., Ch. 913 (H.B. 183), Sec. 3, eff. September 1, 2005.
Acts 2013, 83rd Leg., R.S., Ch. 1391 (H.B. 1294), Sec. 2, eff. September 1, 2013.
Acts 2013, 83rd Leg., R.S., Ch. 1391 (H.B. 1294), Sec. 3, eff. September 1, 2013.
Acts 2023, 88th Leg., R.S., Ch. 709 (H.B. 2190), Sec. 35, eff. September 1, 2023.