Stadler showcased the RS ZERO hydrogen fuel cell railbus at InnoTrans 2024, presenting a revolutionary model in the railway industry. The new railbus is a development based on the reliable design of the diesel railbus Regio-Shuttle RS1, known for its successful operations in Germany and the Czech Republic for almost thirty years. Offering a green solution, the RS ZERO was revealed in August 2024 with a drive system that ensures zero harmful emissions, making it an eco-friendly option compared to traditional diesel trains. During the event, Stadler sealed a deal with Thuringian authorities and Erfurter Bahn to conduct a pilot project for running the RS ZERO with a hydrogen engine, leading to planned passenger trial runs by mid-2026. The railbus can be configured as a single or double-car unit, accommodating between 59 to 165 seats, with features like a low-floor area, wide doors, and comfortable travel conditions. Impressively, the RS ZERO has a maximum speed of 120 km/h, power outputs ranging from 600 to 1200 kW, and efficient tractive efforts. Stadler is also working on a variant of the RS ZERO that can operate on overhead lines and batteries, expanding its usability in various operational scenarios. The RS ZERO is positioned to play a vital role in sustainable transport, enhancing comfort, efficiency, and environmental friendliness in the future of public transportation.