Tex. Transp. Code § 504.505
(a) The department shall issue specialty license plates for a single motor vehicle that is:
Added by Acts 2003, 78th Leg., ch. 1320, Sec. 6, eff. Sept. 1, 2003.
Acts 2005, 79th Leg., Ch. 247 (H.B. 749), Sec. 1, eff. September 1, 2005.
Acts 2009, 81st Leg., R.S., Ch. 1136 (H.B. 2553), Sec. 33, eff. September 1, 2011.