US lawFederal (United States)RegulationsTitle 49 CFR — TransportationChapter II — FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATIONPart 213 — TRACK SAFETY STANDARDSSubpart D — Track Structure213.10149 C.F.R. § 213.101Scope.Last amended: 2017Year: 2026Length: 17 wordsOfficial source Cite as 49 C.F.R. § 213.101 (2026)This subpart prescribes minimum requirements for ballast, crossties, track assembly fittings, and the physical conditions of rails.Next49 C.F.R. § 213.103