Section 26-52-426 - Railroad rolling stock manufactured for use in interstate commerce - Definition(a) The gross receipts or gross proceeds derived from the sale or lease of railroad rolling stock manufactured for use in transporting persons or property in interstate commerce is exempt from the gross receipts tax levied by this chapter.(b)(1) As used in this section, "railroad rolling stock" means completed railroad locomotives and completed railroad cars designed to haul either passengers or freight.(2)(A) "Railroad rolling stock" shall not include repair parts or materials used to repair locomotives or railroad cars, components of railroad cars or locomotives, trailers, or any property not used directly in the transportation of passengers or freight.(B) "Railroad rolling stock" shall also not include machinery used to repair or maintain railroad cars, locomotives, track, railroad ties, or railroad roadway.Acts 1994 (2nd Ex. Sess.), No. 25, § 1.