{"data":{"id":"us/49-cfr-236.106","jurisdiction":"us","citation":"49 CFR 236.106","heading":"Relays.","body":"Each relay, the functioning of which affects the safety of train operations, shall be tested at least once every four years except:\n(a) Alternating current centrifugal type relay shall be tested at least once every 12 months;\n(b) Alternating current vane type relay and direct current polar type relay shall be tested at least once every 2 years; and\n(c) Relay with soft iron magnetic structure shall be tested at least once every 2 years.","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 A—Rules and Instructions: All Systems"],"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":"d4cb0d90a0d647b8502d8416f1ab80f850fc16b7f8d7384906625ff53913158f","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-236.105","next":"us/49-cfr-236.107"},"notice":"GroundRules: Original legal text. Not legal advice."}