{"data":{"id":"us/49-cfr-236.767","jurisdiction":"us","citation":"49 CFR 236.767","heading":"Locking, route.","body":"Electric locking, effective when a train passes a signal displaying an aspect for it to proceed, which prevents the movement of any switch, movable-point frog, or derail in advance of the train within the route entered. It may be so arranged that as a train clears a track section of the route, the locking affecting that section is released.","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 G—Definitions"],"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":"4daeceb1aad601398c6cf95ffdbb41002e57b7bd3f2c0a3476de53ea0047962c","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-236.766","next":"us/49-cfr-236.768"},"notice":"GroundRules: Original legal text. Not legal advice."}