In this subchapter:
(1) "Business sign" means a sign that contains the brand, trademark, name, or logo of a qualified business.
(2) "Motorist information panel" means a rectangular panel placed on a highway that contains at least one business sign advertising a business available within a certain distance of that interchange.
(3) "Qualified business" means a business that meets the requirements of rules adopted by the commissioners court of a county under this subchapter.