(a) A county may not impose under this subchapter specific standards relating to vehicular gate widths, obstacle-free driveway aprons or entrances, pedestrian gate locations, or building numbers that exceed the requirements for new gated communities or new multi-unit housing projects contained in the municipal ordinances of:
(1) the municipality within whose extraterritorial jurisdiction the gated community or multi-unit housing project is located; or
(2) the municipality nearest, on a straight line, to the boundary of the gated community or multi-unit housing project, if the community or project is not within the extraterritorial jurisdiction of a municipality.
(b) The county fire marshal or other authority with fire-fighting jurisdiction may adopt reasonable standards relating to vehicular gate width, obstacle-free driveway aprons or entrances, pedestrian gate locations, and building numbers if the appropriate municipality described by Subsection (a) has not adopted applicable standards.