{"data":{"id":"us/49-cfr-appendix-b-to-part-234","jurisdiction":"us","citation":"49 CFR Appendix B to Part 234","heading":"Appendix B to Part 234—Alternate Methods of Protection Under 49 CFR 234.105(c), 234.106, and 234.107(c)","body":"[This is a summary—see body of text for complete requirements]\nFlagger for each direction of traffic Police officer present Flagger present, but not one for each direction of traffic No flagger/no police\nFalse Activation Normal Speed Normal Speed Proceed with caution—maximum speed of 15 mph Proceed with caution—maximum speed of 15 mph.\nPartial Activation* Normal Speed Normal Speed Proceed with caution—maximum speed of 15 mph Proceed with caution—maximum speed of 15 mph.\nActivation Failure** Normal Speed Normal Speed Proceed with caution—maximum speed of 15 mph Stop: Crewmember flag traffic and reboard.\n*Partial activation—full warning not given.\nNon-gated crossing with one pair of lights designed to flash alternatively, one light does not work (and back-lights from other side not visible).\nGated crossing—gate arm not horizontal; or any portion of a gate arm is missing if that portion had held a gate arm flashing light.\n**Activitation failure includes—if more than 50% of the flashing lights on any approach lane not functioning; or if an approach lane has two or more pairs of flashing lights, there is not at least one pair operating as intended.","path":["Title 49—Transportation","Subtitle B—Other Regulations Relating to Transportation","CHAPTER II—FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","PART 234—GRADE CROSSING SAFETY"],"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":"fe18ac146a7d6e488314ef0e030e7c8d67b3ea56e367bc9ec4e40def7da85952","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-appendix-a-to-part-234","next":"us/49-cfr-235.1"},"notice":"GroundRules: Original legal text. Not legal advice."}