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 — Definitions236.71749 C.F.R. § 236.717Characteristics, operating.Last amended: 2017Year: 2026Length: 28 wordsOfficial source Cite as 49 C.F.R. § 236.717 (2026)The measure of electrical values at which electrical or electronic apparatus operate (e.g., drop-away, pick-up, maximum and minimum current, and working value). [49 FR 3387, Jan. 26, 1984]Previous49 C.F.R. § 236.714Next49 C.F.R. § 236.718