20 electric buses by BYD have been officially commissioned by Nahverkehrsbetriebe Birkenfeld to serve regional and urban public transport services in the Nationalparklandkreis. The Nationalparklandkreis refers to Landkreis Birkenfeld, a rural district in the federal state of Rhineland-Palatinate in western Germany. Public bus services in the district are operated by Nahverkehrsbetriebe Birkenfeld, a district-owned company acting within the Rhein-Nahe Nahverkehrsverbund, the regional public transport authority. Since August 2022, NVB has also been responsible for urban bus services in the city of Idar-Oberstein. As part of the introduction of the electric fleet, drivers completed dedicated training programmes, including vehicle handling and safety training sessions conducted at the Nürburgring.