{"data":{"id":"us/49-cfr-236.742","jurisdiction":"us","citation":"49 CFR 236.742","heading":"Dog, locking.","body":"A steel block attached to a locking bar or tappet of an interlocking machine, by means of which locking between levers is accomplished.","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":"5b8e6606c9e64c1ad11e3ec118d19b07ccdf978a6704f3529bb74bb28f341045","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-236.741","next":"us/49-cfr-236.743"},"notice":"GroundRules: Original legal text. Not legal advice."}