Texas Transportation Code - TRANSP § 547.203. Vehicle Equipment Testing:  Department Standards

(1) review test data submitted by a manufacturer to show compliance with a department standard;  and

(2) test an item of vehicle equipment independently in connection with a proceeding to determine compliance with a department standard.

(1) by rule, require a manufacturer of an item of vehicle equipment sold in this state to submit adequate test data to show that the item complies with department standards;

(2) periodically require a manufacturer to submit revised test data to demonstrate continuing compliance;

(3) purchase an item of vehicle equipment at retail for the purpose of review and testing under Subsection (a);  and

(4) enter into cooperative arrangements with other states and interstate agencies to reduce duplication of testing and to facilitate compliance with rules under Subsection (c)(1).