Switching service
Switching service means the classification of freight cars according to commodity or destination; assembling of cars for train movements; changing the position of cars for purposes of loading, unloading, or weighing; placing of locomotives and cars for repair or storage; or moving of rail equipment in connection with work service that does not constitute a train movement.
Source
49 CFR § 232.5
Scoping language
The definitions in this section are intended to clarify the meaning of terms used in this part.