Tex. Transportation Code § 547.102: SCHOOL BUS EQUIPMENT STANDARDS.

The department may adopt standards and specifications that:

(1) supplement the standards and specifications provided by this chapter;

(2) apply to lighting and warning device equipment required for a school bus; and

(3) at the time adopted, correlate with and conform as closely as possible to specifications approved by the Society of Automotive Engineers.

Acts 1995, 74th Leg., ch. 165, Sec. 1, eff. Sept. 1, 1995.