(a) In this section, "mobile food unit" and "roadside food vendor" have the meanings assigned under Section 437.001.
(b) A municipality with a population of 1.5 million or more and a county with a population of 3.4 million or more shall enforce state law and rules adopted under state law concerning mobile food units and roadside food vendors in the same manner that the county or municipality enforces other health and safety regulations relating to food service.