With RCA, European infrastructure managers define an internationally standardised signalling system, focusing on modular architecture and standardised interfaces.

As we cannot meet you on the RCA stand at Innotrans 2020, a video has been prepared to give a virtual demonstration of RCA. Several parties provided parts of this demonstration, brought together in the video. To be demonstrated live at Innotrans 2021!

European infrastructure managers have to optimize cost, reliability, safety, capacity and fast migration. Assets have to be renewed while new technologies are introduced. Incompatibilities create high cost and investment risks. Inflexible old architectures bind the asset owners to technologies and processes which are not making use of the possibilities of today. Expensive migration challenges hinder the infrastructure managers to change their situation fast.

RCA is introducing a modern architecture for the CCS field based on radio based ERTMS and EULYNX. It creates a flexible and safe investment situation by defining a framework for modular standard products as a set of standard requirements used in CCS procurements. 

The digitization of command, control and signalling will only succeed together with a market, that uses standard architectures.

An introduction to RCA is presented in a short video.

Already in its second year, from 21st to 25th of September 2020 the Digital Rail Summer School took place at the Digital Test Field of DB in the iron ore mountains. This annual event aims on attracting both IT and railway technology students to team up in joint projects. Digitalisation throughout the entire rail system not only means the introduction of new devices and computer-aided processes, but also represents new challenges in the training and further education of all people involved.

Digitalisation in railways is a cross-cutting issue in which IT expertise must be combined with knowledge of railway operations and authorisation. There is not a single course of study or training today which brings together all of these aspects. The programming languages, which are currently popular in computer science – such as Python, Java, JavaScript, Objective-C, or .NET – are well suited for dynamic systems, agile, web-based processes and app development. However, none of these programming languages can be approved for safety-relevant systems in rail operations without restrictions.

It was not a surprise that the involved universities gave priority to a “EULYNX Live” demonstration: A co-simulation with hardware-in-the-loop; control of a switch motor from the simulation model, first in the IoT lab at HPI, then in the Digital Test Field of DB. After a demo in a dedicated lecture, a light signal and several axle counters have been connected with a simulator of a digital interlocking based on EULYNX SCI interfaces. A train passed several times the block sections and the functioning of the EULYNX data telegrams was successfully demonstrated.

The Digital Rail Demo Day on 24th of September was a conference and fair where innovative rail technologies had been presented and demonstrated live. In addition, the digital test field track was presented as a real laboratory for research, development and testing of networked system innovations and its possibilities for the implementation from innovation projects. Amongst EULYNX related research, several master theses had been presented and are available in short movies.


In order to enable future partial replacement of system elements European infrastructure managers feel the need for standardisation of the interfaces between these elements. With the EULYNX approach subsystems can be replaced without the need for a complete renewal of the interlocking.


Data preparation is the process of writing down the configuration of a yard to which the computer applies the interlocking logic rules. EULYNX Data Preparation describes all the different ways to configure safe signalling systems. EULYNX Data Preparation standard facilitates the exchange of data between the Infrastructure Manager and the signalling supplier. An introduction video on data prep standardisation is now available.

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