Locomotive
Locomotive means, for purposes of this subpart only, a piece of on-track equipment (other than specialized roadway maintenance equipment or a dual purpose vehicle operating in accordance with 240.104(2) of this chapter):
(1) With one or more propelling motors designed for moving other equipment;
(2) With one or more propelling motors designed to carry freight or passenger traffic or both; or
(3) Without propelling motors but with one or more control stands.