US lawFederal (United States)RegulationsTitle 49 CFR — TransportationChapter II — FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATIONPart 234 — GRADE CROSSING SAFETYSubpart D — Maintenance, Inspection, and Testing234.21149 C.F.R. § 234.211Security of warning system apparatus.Last amended: 2017Year: 2026Length: 12 wordsOfficial source Cite as 49 C.F.R. § 234.211 (2026)Highway-rail grade crossing warning system apparatus shall be secured against unauthorized entry.Previous49 C.F.R. § 234.209Next49 C.F.R. § 234.213