Train Composition Message (TCM)

The Responsible RU shall send the ‘Train Composition message’ defining the composition of the train to the next Responsible RU involved in the freight service and to the Lead RU. According to network statement, the ‘Train Composition message’ is also to be sent from the Responsible RU to the IM(s). The definition of the mandatory structure of Train Composition message and the elements to be followed are described in the document ‘TAF TSI – Annex D.2: Appendix F – TAF TSI Data and Message Model’ listed in Appendix I. Minimum elements to be delivered for the message exchange between RU and IM for the purpose Train Composition are defined in Chapter 4.2.2.7.2 of Implementing Regulation (EU) 2019/773 (OPE TSI).