(a) This section applies to a county:
(1) that has a population of more than 3.3 million or is contiguous with a county that has a population of more than 3.3 million; and
(2) in which the commissioners court by order elects to operate under this section.
(b) If a county elects to operate under this section, § 232.005 does not apply to the county. The sections of this chapter preceding § 232.005 do apply to the county in the same manner that they apply to other counties except that:
(1) they apply only to tracts of land located outside municipalities and the extraterritorial jurisdiction of municipalities, as determined under Chapter 42;
(2) the commissioners court of the county, instead of having the powers granted by Sections 232.003(2) and (3), may:
(A) require a right-of-way on a street or road that does not function as a main artery in the subdivision of not less than 40 feet or more than 50 feet; and
(B) require that the street cut on a main artery within the right-of-way be not less than 30 feet or more than 45 feet, and that the street cut on any other street or road within the right-of-way be not less than 25 feet or more than 35 feet; and
(3) § 232.004(5)(B) does not apply to the county.