{"data":{"id":"us/49-cfr-236.502","jurisdiction":"us","citation":"49 CFR 236.502","heading":"Automatic brake application, initiation by restrictive block conditions stopping distance in advance.","body":"An automatic train-stop or train-control system shall operate to initiate an automatic brake application at least stopping distance from the entrance to a block, wherein any condition described in § 236.205 obtains, and at each main track signal requiring a reduction in speed.","path":["Title 49—Transportation","Subtitle B—Other Regulations Relating to Transportation","CHAPTER II—FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","PART 236—RULES, STANDARDS, AND INSTRUCTIONS GOVERNING THE INSTALLATION, INSPECTION, MAINTENANCE, AND REPAIR OF SIGNAL AND TRAIN CONTROL SYSTEMS, DEVICES, AND APPLIANCES","Subpart E—Automatic Train Stop, Train Control and Cab Signal Systems"],"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":"8a976709019a4bb48a3c63430d60f32d89b035f143a049095be38b0df64e8bf6","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-236.501","next":"us/49-cfr-236.503"},"notice":"GroundRules: Original legal text. Not legal advice."}