Rhein-Main-Verkehrsverbund (RMV), Deutsche Bahn (DB) and Holon have launched the KIRA+ project to test SAE Level 4 autonomous driving in local public transportation, with preparations for the test operation now under way.

https://www.autonomousvehicleinternational.com/news/robotaxis/rmv-db-and-holon-launch-kira-autonomous-public-transportation-project.html