{"data":{"id":"us/49-cfr-234.225","jurisdiction":"us","citation":"49 CFR 234.225","heading":"Activation of warning system.","body":"A highway-rail grade crossing warning system shall be maintained to activate in accordance with the design of the warning system, but in no event shall it provide less than 20 seconds warning time for the normal operation of through trains before the grade crossing is occupied by rail traffic.","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":"95c0db1af27379b2fefcffc978b21d8cb5eb4b12fed50d28e99053002d71fd19","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-234.223","next":"us/49-cfr-234.227"},"notice":"GroundRules: Original legal text. Not legal advice."}