{"data":{"id":"us/49-cfr-236.743","jurisdiction":"us","citation":"49 CFR 236.743","heading":"Dog, swing.","body":"A locking dog mounted in such a manner that it is free to rotate on a trunnion which is riveted to a locking bar.","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":"d8ee3821cee7a3b27eb82430304d441e1377efce210d74ad838c535602a72fdc","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-236.742","next":"us/49-cfr-236.744"},"notice":"GroundRules: Original legal text. Not legal advice."}