(a) Section 3002.051 does not prohibit a political subdivision or state agency from:
(1) adopting a policy necessary to accommodate an individual with a disability, a young child, or an elderly individual who requires assistance when using a multiple-occupancy private space;
(2) establishing a single-occupancy private space, family restroom, or changing room; or
(3) changing the designation of a multiple-occupancy private space from the use designated under Section 3002.051 to exclusive use by individuals of the sex opposite to the previously designated sex.
(b) A political subdivision or state agency is prohibited from providing an accommodation under Subsection (a) that allows an individual to use a multiple-occupancy private space designated for the exclusive use of individuals of the sex opposite to the individual's sex.