{"data":{"id":"us/49-cfr-271.601","jurisdiction":"us","citation":"49 CFR 271.601","heading":"Definitions.","body":"As used in this subpart—\nContributing factor means a circumstance or condition that helps cause a result.\nFatigue means a complex state characterized by a lack of alertness and reduced mental and physical performance, often accompanied by drowsiness.\nFatigue-risk analysis means a railroad's analysis of its operations that:\n(1) Identifies and evaluates the fatigue-related railroad safety hazards on its system(s) and;\n(2) Determines the degree of risk associated with each of those hazards.\nFRMP means a Fatigue Risk Management Program.\nFRMP plan means a Fatigue Risk Management Program plan.\nSafety-related railroad employee means:\n(1) A person subject to 49 U.S.C. 21103, 21104, or 21105;\n(2) Another person involved in railroad operations not subject to 49 U.S.C. 21103, 21104, or 21105;\n(3) A person who inspects, installs, repairs or maintains track, roadbed, signal and communication systems, and electric traction systems including a roadway worker or railroad bridge worker;\n(4) A hazmat employee defined under 49 U.S.C. 5102(3);\n(5) A person who inspects, repairs, or maintains locomotives, passenger cars, or freight cars; or\n(6) An employee of any person who utilizes or performs significant railroad safety-related services, as described in § 271.205(a)(3), if that employee performs a function identified in paragraphs (1) through (5) of this definition.","path":["Title 49—Transportation","Subtitle B—Other Regulations Relating to Transportation","CHAPTER II—FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","PART 271—RISK REDUCTION PROGRAM","Subpart G—Fatigue Risk Management Programs"],"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":"fe730d47ec3a76aa0e38e3d996b90ae8a3d1b6e143b97ae7bcff2fdf918ec338","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-271.503","next":"us/49-cfr-271.603"},"notice":"GroundRules: Original legal text. Not legal advice."}