{"data":{"id":"us/49-cfr-236.720","jurisdiction":"us","citation":"49 CFR 236.720","heading":"Circuit, common return.","body":"A term applied where one wire is used for the return of more than one electric circuit.","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":"71d79b24fbb8d08397b09eac7128ab65a62a08b97bc2bec851ef7672beb624dd","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-236.719","next":"us/49-cfr-236.721"},"notice":"GroundRules: Original legal text. Not legal advice."}