{"data":{"id":"us/49-cfr-236.379","jurisdiction":"us","citation":"49 CFR 236.379","heading":"Route locking.","body":"Route locking or other type of switch locking shall be tested when placed in service and thereafter when modified, disarranged, or at least once every two years, whichever shall occur first.","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":"96ecca2915dce3573478397eda0b7541f4832e1b521dc08cba687f2524741095","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-236.378","next":"us/49-cfr-236.380"},"notice":"GroundRules: Original legal text. Not legal advice."}