Kassel is a city on the Fulda River in northern Hesse, in central Germany. It is the administrative seat of the Regierungsbezirk Kassel and the district of the same name, and had 201,048 inhabitants in December 2020. From Wikipedia
The Leipzig pilot system now operational, saving €85,000 annually, with Kassel set to follow as part of Deutsche Bahn's sustainability and cost-efficiency strategy.