(a) Each railroad's program shall state which of the three classes of service, provided for in paragraph (b) of this section, that it will cover.

(b) A railroad may issue certificates for any or all of the following classes of service:

(1) Train service engineers,

(2) Locomotive servicing engineers, and

(3) Student engineers.

(c) The following operational constraints apply to each class of service:

(1) Train service engineers may operate locomotives singly or in multiples and may move them with or without cars coupled to them;

(2) Locomotive servicing engineers may operate locomotives singly or in multiples but may not move them with cars coupled to them; and

(3) Student engineers may operate only under direct and immediate supervision of an instructor engineer.

(d) Each railroad is authorized to impose additional conditions or operational restrictions on the service an engineer may perform beyond those identified in this section provided those conditions or restrictions are not inconsistent with this part.

(e) A railroad shall not reclassify the certification of any type of certified engineer to a more restrictive class of certificate or a student engineer certificate during the period in which the certification is otherwise valid.

[56 FR 28254, June 19, 1991, as amended at 74 FR 68182, Dec. 23, 2009]