{"data":{"id":"us/49-cfr-234.243","jurisdiction":"us","citation":"49 CFR 234.243","heading":"Wire on pole line and aerial cable.","body":"Wire on a pole line shall be securely attached to an insulator that is properly fastened to a cross arm or bracket supported by a pole or other support. Wire shall not interfere with, or be interfered with by, other wires on the pole line. Aerial cable shall be supported by messenger wire. An open-wire transmission line operating at voltage of 750 volts or more shall be placed not less than 4 feet above the nearest cross arm carrying active warning system circuits.","path":["Title 49—Transportation","Subtitle B—Other Regulations Relating to Transportation","CHAPTER II—FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","PART 234—GRADE CROSSING SAFETY","Subpart D—Maintenance, Inspection, and Testing"],"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":"8be5f74f5d22aafee63a7be4ca9851786082fc836126817cc2081564aa47e593","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-234.241","next":"us/49-cfr-234.245"},"notice":"GroundRules: Original legal text. Not legal advice."}