{"data":{"id":"us/49-cfr-213.53","jurisdiction":"us","citation":"49 CFR 213.53","heading":"Gage.","body":"(a) Gage is measured between the heads of the rails at right-angles to the rails in a plane five-eighths of an inch below the top of the rail head.\n(b) Gage shall be within the limits prescribed in the following table—\nClass of track The gage must be at least— But not more than—\nExcepted track N/A 4′101⁄4″.\nClass 1 track 4′8″ 4′10″.\nClass 2 and 3 track 4′8″ 4′93⁄4″.\nClass 4 and 5 track 4′8″ 4′91⁄2″.","path":["Title 49—Transportation","Subtitle B—Other Regulations Relating to Transportation","CHAPTER II—FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","PART 213—TRACK SAFETY STANDARDS","Subpart C—Track Geometry"],"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":"8e06fa637b1d5dd8850a7c2b0076aa01488c1bb2149e02169dee218cf84c6f36","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-213.51","next":"us/49-cfr-213.55"},"notice":"GroundRules: Original legal text. Not legal advice."}