Responsible RU (RRU)

The RRU is responsible for the run of the train in operation phase, for the whole journey or a section of the journey. If more than one RRU is involved in operating the train, the responsibility is transferred from one RRU to the next RRU at the interchange point. The RRU is the contact entity for the IM in operation phase for all message exchange. Based on an agreement with Responsible Applicant, RRU can also task a subcontractor with running the train, the RRU will nevertheless remain the point of contact for the IM in operation phase.