{"data":{"id":"us/49-cfr-220.47","jurisdiction":"us","citation":"49 CFR 220.47","heading":"Emergency radio transmissions.","body":"An initial emergency radio transmission shall be preceded by the word “emergency,” repeated three times. An emergency transmission shall have priority over all other transmissions and the frequency or channel shall be kept clear of non-emergency traffic for the duration of the emergency communication.","path":["Title 49—Transportation","Subtitle B—Other Regulations Relating to Transportation","CHAPTER II—FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","PART 220—RAILROAD COMMUNICATIONS","Subpart B—Radio and Wireless Communication Procedures"],"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":"9bc6c3fbd35fc3930014dd31f55c851ec173998d778a1feb2fa86b042539e024","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-220.45","next":"us/49-cfr-220.49"},"notice":"GroundRules: Original legal text. Not legal advice."}