{"data":{"id":"us/49-cfr-236.408","jurisdiction":"us","citation":"49 CFR 236.408","heading":"Route locking.","body":"Route locking shall be provided where switches are power-operated. Route locking shall be effective when the first pair of wheels of a locomotive or car passes a point not more than 13 feet in advance of the signal governing its movement, measured from the center of the signal mast or, if there is no mast, from the center of the signal.","path":["Title 49—Transportation","Subtitle B—Other Regulations Relating to Transportation","CHAPTER II—FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","PART 236—RULES, STANDARDS, AND INSTRUCTIONS GOVERNING THE INSTALLATION, INSPECTION, MAINTENANCE, AND REPAIR OF SIGNAL AND TRAIN CONTROL SYSTEMS, DEVICES, AND APPLIANCES","Subpart D—Traffic Control Systems"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-49.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:34Z","sha256":"e31082170bb83fa58acc1c10885e67191a0c8af7625b6d40b3bd3609fc0aa304","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-236.407","next":"us/49-cfr-236.409"},"notice":"GroundRules: Original legal text. Not legal advice."}