US lawFederal (United States)RegulationsTitle 49 CFR — TransportationChapter II — FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATIONPart 230 — STEAM LOCOMOTIVE INSPECTION AND MAINTENANCE STANDARDSSubpart C — Steam Locomotives and Tenders230.7949 C.F.R. § 230.79Train signal system.Last amended: 2017Year: 2026Length: 37 wordsOfficial source Cite as 49 C.F.R. § 230.79 (2026)Where utilized, the train signal system, or any other form of on-board communication, shall be tested and known to be in safe and suitable condition for service at the beginning of each day the locomotive is used.Previous49 C.F.R. § 230.78Next49 C.F.R. § 230.80