From mid-September to mid-October, a further training course on the topic of “Basics of LST and interfaces” was carried out as an online offer for DB Netz Karlsruhe. On 4 event days of 2 double hours each, the lectures focused on various topics from railway safety technology, which also took into account practical examples in coordination with the client. We would like to thank all participants for their interest as well as the client for the trust placed in us and the uncomplicated coordination of the course development. The continuation of the further training event as required is being sought.