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 C — Interlocking236.32749 C.F.R. § 236.327Switch, movable-point frog or split-point derail.Last amended: 2017Year: 2026Length: 35 wordsOfficial source Cite as 49 C.F.R. § 236.327 (2026)Switch, movable-point frog, or split-point derail equipped with lock rod shall be maintained so that it can not be locked when the point is open three-eighths inch or more. [49 FR 3385, Jan. 26, 1984]Previous49 C.F.R. § 236.326Next49 C.F.R. § 236.328