{"data":{"id":"us/49-cfr-236.304","jurisdiction":"us","citation":"49 CFR 236.304","heading":"Mechanical locking or same protection effected by circuits.","body":"Mechanical locking, or the same protection effected by means of circuits, shall be provided.","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 C—Interlocking"],"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":"d7a6a5a9556d2fd7ceb86f0976e27af27bc3bb96fc1ffb0de20a8a8167662ebf","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-236.303","next":"us/49-cfr-236.305"},"notice":"GroundRules: Original legal text. Not legal advice."}