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 — Definitions236.75349 C.F.R. § 236.753Limits, interlocking.Last amended: 2017Year: 2026Length: 10 wordsOfficial source Cite as 49 C.F.R. § 236.753 (2026)The tracks between the opposing home signals of an interlocking.Previous49 C.F.R. § 236.752Next49 C.F.R. § 236.756