15 July 2022

On June 22, 2022, the Safe4RAIL-3 Consortium, together with members of CONNECTA-3, met for the second Safety and Cybersecurity Workshop in Brussels, Belgium, at the UNIFE premises. This time, the workshop could be held as a traditional face-to-face event, with only a few participants attending virtually.

The day was used to further flesh out the topics for the safety and cybersecurity studies identified in the previous phase of the project and to define the next steps for the studies for the future course of the project. For this purpose, CONNECTA-3 explained in detail the six underlying concepts from the areas of Wireless Train Control and Monitoring System (WTCMS), Drive-by-Data (DbD) and Functional Distribution Framework (FDF) for the studies. CONNECTA-3 partners answered dedicated questions from the Safe4RAIL-3 consortium for each topic, thus identifying open topics together with Safe4Rail-3. The morning session covered the concepts of "cryptographic protection" and "safe train inauguration" at WTCMS, and the concepts of "safe data transfer" and "safe train inauguration" at DbD. After the lunch break, the "Virtual Local Area Network (VLAN)" concept, also from DbD, and finally the "SIL4 safety architecture concept" from FDF were covered.

To mention some technical details, for example, during the discussions there was an intensive exchange about the bit error rate in wireless communication at the WTCMS. In addition, the functionality of the Train-Inauguration Validator (TI-Validator), which is to be used for both the wireless (WTCMS) and the wired solution (DbD), was discussed in detail. In addition to the previously mentioned points, the discussion on the topic of the VLAN isolation concept focused on the standards to be used in the area of cybersecurity.

As a result of the workshop the common understanding on the concepts between the Safe4RAIL-3 consortium and CONNECTA-3 could be deepened. Specific open technical or content issues as well as newly added pending work were identified and compiled that need to be addressed and completed for further successful work on the safety and cybersecurity studies.

Overall, the workshop was considered by all participants to be a fruitful and helpful meeting that benefited especially from the physical presence of most of the participants.