RS: speedProfile in rolling stock

Jernbanedirektoratet need to identify under which speedProfile a rolling stock can run.

@ref="corresponding id in <infrastructure/speedProfile> in the same file" of type id and optional @name="corresponding name in <infrastructure/speedProfile> in another file" of type string and optional

@ref="corresponding id in <infrastructure/speedProfile>in the same file" of type id and optional @name="corresponding name in <infrastructure/speedProfile>in another file" of type string and optional