US lawFederal (United States)RegulationsTitle 49 CFR — TransportationChapter II — FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATIONPart 236 — RULES, STANDARDS, AND INSTRUCTIONS GOVERNING THE INSTALLATION, INSPECTION, MAINTENANCE, AND REPAIR OF SIGNAL AND TRAIN CONTROL SYSTEMS, DEVICES, AND APPLIANCESSubpart G — Definitions236.73349 C.F.R. § 236.733Current, foreign.Last amended: 2017Year: 2026Length: 22 wordsOfficial source Cite as 49 C.F.R. § 236.733 (2026)A term applied to stray electric currents which may affect a signaling system, but which are not a part of the system.Previous49 C.F.R. § 236.732Next49 C.F.R. § 236.734