Section 240.201 - Implementation(a) Each railroad shall designate in writing any person(s) it deems qualified as a designated supervisor of locomotive engineers. Each person so designated shall have demonstrated to the railroad through training, testing or prior experience that he or she has the knowledge, skills, and ability to be a designated supervisor of locomotive engineers.(b) Each railroad shall designate in writing all persons that it will deem to be qualified as certified locomotive engineers for the purpose of initial compliance with paragraph (d) of this section, except as provided for in paragraph (h) of this section. (1) Each person so designated shall have demonstrated to the railroad through training, testing or prior experience that he or she has the knowledge and skills to be a certified locomotive engineer.(2) Each railroad shall issue a certificate that complies with § 240.223 to each person that it designates as qualified under the provisions of paragraph (b) of this section.(c) No railroad shall permit or require a person, designated as qualified for certification under the provisions of paragraph (b) of this section, to perform service as a certified locomotive or train service engineer for more than a 36-month period unless that person has been determined to be qualified in accordance with procedures that comply with subpart C.(d) No railroad shall permit or require any person to operate a locomotive in any class of locomotive or train service unless that person has been certified as a qualified locomotive engineer and issued a certificate that complies with § 240.223 .(e) No Class I railroad (including the National Railroad Passenger Corporation) or railroad providing commuter service shall designate any person it deems qualified as a designated supervisor of locomotive engineers or initially certify or recertify a person as a locomotive engineer in either locomotive or train service unless that person has been tested, evaluated, and determined to be qualified in accordance with procedures that comply with subpart C.(f) No Class II railroad shall designate any person it deems qualified as a designated supervisor of locomotive engineers or initially certify or recertify a person as a locomotive engineer in any class of locomotive or train service unless that person has been tested, evaluated and determined to be qualified in accordance with procedures that comply with subpart C.(g) No Class III railroad (including a switching and terminal or other railroad not otherwise classified) shall designate any person it deems qualified as a designated supervisor of locomotive engineers or initially certify or recertify a person as a locomotive engineer in any class of locomotive or train service unless that person has been tested, evaluated and determined to be qualified in accordance with procedures that comply with subpart C.(h) Each person designated as a locomotive engineer shall be issued a certificate that complies with § 240.223 prior to being required or permitted to operate a locomotive. 74 FR 68183 , Dec. 23, 2009