BVG Rheinbahn Service Disruptions S-Bahn Rhein-Neckar-Verkehrsgesellschaft SWEG Regiobus Financial Management Regiobus Hannover Bus Services Human Resources Pricing Strategies S-Bahn Operations Ticketing Systems Financing Models S-Bahn Berlin Operational Challenges Münchner Verkehrsgesellschaft Görlitz Verkehrsbetriebe S-Bahn Hannover Service Quality Electric Bus Adoption Electric Bus Projects DVG Ticketing Solutions Leipzig Verkehrsbetriebe Mitteldeutsche Regiobahn Rhein-Neckar-Verkehr GmbH Bus Operators BVG Operations Berlin Transport Gewerkschaft Verdi Revenue Models Funding Models Financial Performance Revenue Loss Germany Contracting Union Activities HCR Labor Disputes Saarbahn GmbH Fleet Management Fare Structures Employee Relations Deutsche Bahn Üstra