(a) Notwithstanding any other law, a mobile food service establishment may not operate in a county to which this chapter applies unless the establishment obtains a permit from the county.
(b) A permit issued by a county under this chapter must authorize a mobile food service establishment to operate in any municipality located in the county.

(c) A permit issued by a county under this chapter is considered a permit issued by a county under Chapter 437 for purposes of that chapter.