Tex. Transp. Code § 502.456
(a) A vehicle may be registered without payment if:
(1) the vehicle is owned or leased by an emergency medical services provider that:
(B) is created and operated by:
(2) the vehicle:
(b) A vehicle may be registered without payment of a registration fee if the vehicle:
(e) The department must approve an application for registration under this section as provided by Section 502.451.
Transferred, redesignated and amended from Transportation Code, Section 502.204 by Acts 2011, 82nd Leg., R.S., Ch. 1296 (H.B. 2357), Sec. 152, eff. January 1, 2012.