{"data":{"id":"us/49-cfr-234.229","jurisdiction":"us","citation":"49 CFR 234.229","heading":"Shunting sensitivity.","body":"Each highway-rail grade crossing train detection circuit shall detect the application of a shunt of 0.06 ohm resistance when the shunt is connected across the track rails of any part of the circuit.","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":"d32383b442ea97c2797df849996c4d98a782a33d8465c00a88142437af6e28a4","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-234.227","next":"us/49-cfr-234.231"},"notice":"GroundRules: Original legal text. Not legal advice."}