Texas Transportation Code - TRANSP § 623.144. Registration of Vehicle

(a) A person may not operate a vehicle permitted under this subchapter on a public highway unless the vehicle is registered under Chapter 502 for the maximum gross weight applicable to the vehicle under Section 621.101 or has distinguishing license plates as provided by Section 502.146 if applicable to the vehicle.

(b) The department may not issue distinguishing license plates to a vehicle described by Section 502.146(b)(3) unless the applicant complies with the requirements of that subsection.