Stadler has unveiled the RS ZERO at InnoTrans in Berlin, marking a significant milestone in the railway industry. The RS ZERO is the world's first train to offer both hydrogen and battery drive options, aiming to facilitate CO2 emission-free operations on branch lines. This innovative successor to the successful RS1 Regio-Shuttle is a response to the growing demand for environmentally friendly transport solutions. With around 500 RS1 vehicles currently in operation in Germany and the Czech Republic, Stadler has built on this legacy by integrating state-of-the-art drive systems into the RS ZERO. The RS ZERO's flexibility is a key highlight, as it can operate without CO2 emissions on regional routes regardless of electrification or hydrogen refueling stations. The train's lightweight design and adaptability make it ideal for economically viable transport on secondary routes with low traffic density. Offering space for up to 150 passengers, the RS ZERO provides a comfortable and accessible travel experience with features like low entry height, a spacious low-floor area, and barrier-free access. The interior of the prototype exhibited at InnoTrans showcases Stadler's commitment to sustainability. The use of renewable materials, such as flooring made from 98% renewable raw materials and recycled side wall paneling, reflects the company's dedication to eco-friendly practices. Additionally, the train incorporates a climate-friendly air conditioning system and a versatile layout including areas for bicycles, pushchairs, and lounge zones, enhancing passenger comfort and convenience. Stadler's vision with the RS ZERO extends beyond innovation; it represents a step towards a CO2-neutral future in regional rail transport. By offering a sustainable solution for local passenger travel, Stadler is not only promoting environmental consciousness but also ensuring a safe and enjoyable journey for passengers. The RS ZERO sets a new standard for environmentally friendly rail transport, embodying a harmonious blend of technology, sustainability, and passenger-centric design.