Tex. Transp. Code § 504.513
(a) The department shall issue specialty license plates for:
(1) volunteer firefighters certified by:
Reenacted, transferred, redesignated and amended from Transportation Code, Section 504.409 by Acts 2011, 82nd Leg., R.S., Ch. 1296 (H.B. 2357), Sec. 200, eff. January 1, 2012.