{"data":{"id":"us/49-cfr-234.261","jurisdiction":"us","citation":"49 CFR 234.261","heading":"Highway traffic signal pre-emption.","body":"Highway traffic signal pre-emption interconnections, for which a railroad has maintenance responsibility, shall be tested at least once each month.","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":"9eb5d6ed5f90bda2e3b9f6071d0e4a0e17865950483943c22b7ef2a43ab77ed7","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-234.259","next":"us/49-cfr-234.263"},"notice":"GroundRules: Original legal text. Not legal advice."}