Tex. Civil Practice and Remedies Code § 71.007: INEFFECTIVE AGREEMENT.

An agreement between the owner of a railroad, street railway, steamboat, stagecoach, or other vehicle for the transportation of goods or passengers, of an industrial or public utility plant, or of other machinery and an individual, corporation, trustee, receiver, lessee, joint-stock association, or other entity in control of or operating the vehicle, plant, or other machinery does not release the owner or the entity controlling or operating the vehicle, plant, or other machinery from liability provided by this subchapter.

Acts 1985, 69th Leg., ch. 959, Sec. 1, eff. Sept. 1, 1985.