49 CFR §240.213

1. (a)Each railroad, prior to the initial issuance of a certificate to any person as a train or locomotive service engineer, shall determine that the person has, in accordance with the requirements of § 240.123 of this part, the knowledge and skills to safely operate a locomotive or train in the most demanding class or type of service that the person will be permitted to perform.
2. (b)In making this determination, a railroad shall have written documentation showing that:
   1. (1)The person completed a training program that complies with § 240.123 of this part;
   2. (2)The person demonstrated his or her knowledge and skills by achieving a passing grade under the testing and evaluation procedures of that training program; and
   3. (3)A qualified Designated Supervisor of Locomotive Engineers has determined that the person is familiar with the physical characteristics of the railroad or its pertinent segments.