Sec. 547.003. EQUIPMENT NOT AFFECTED. This chapter does not prohibit and the department by rule may not prohibit the use of:

(1) equipment required by an agency of the United States; or

(2) a part or accessory not inconsistent with this chapter or a rule adopted under this chapter.

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