{"data":{"id":"us/49-cfr-234.249","jurisdiction":"us","citation":"49 CFR 234.249","heading":"Ground tests.","body":"A test for grounds on each energy bus furnishing power to circuits that affect the safety of warning system operation shall be made when such energy bus is placed in service and at least once each month thereafter.","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":"ad90b862a14beced901b02baf1e86e7095c323f7f237b694551638d0f60c87e7","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-234.247","next":"us/49-cfr-234.251"},"notice":"GroundRules: Original legal text. Not legal advice."}