49 CFR §271.601

As used in this subpart— Contributing factor means a circumstance or condition that helps cause a result. Fatigue means a complex state characterized by a lack of alertness and reduced mental and physical performance, often accompanied by drowsiness. Fatigue-risk analysis means a railroad's analysis of its operations that: FRMP means a Fatigue Risk Management Program. FRMP plan means a Fatigue Risk Management Program plan. Safety-related railroad employee means:

(1) Identifies and evaluates the fatigue-related railroad safety hazards on its system(s) and;

(2) Determines the degree of risk associated with each of those hazards. (1) A person subject to 49 U.S.C. 21103, 21104, or 21105; (2) Another person involved in railroad operations not subject to 49 U.S.C. 21103, 21104, or 21105; (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; (4) A hazmat employee defined under 49 U.S.C. 5102(3); (5) A person who inspects, repairs, or maintains locomotives, passenger cars, or freight cars; or (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.