Texas Transportation Code - TRANSP § 460.112. Mass Transit Rail System;  Exemption

(a) An authority that constructs or operates or contracts with another entity to construct or operate a mass transit rail system is not subject to any state law regulating or governing the design, construction, or operation of a railroad, railway, street railway, streetcar, or interurban railway.

(b) For purposes of ownership or transfer of ownership of an interest in real property, a light rail mass transit system line operating on property previously used by a railroad, railway, street railway, or interurban railway is a continuation of existing rail use.