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20METRO RAIL NEWS -MAY - 2025 www.metrorailnews.in to the reduced number of moving parts in fuel cell systems. 3. Environmental Impact%u2022 Hydrogen trains present a clean alternative to diesel locomotives, emitting only water vapour as exhaust and generating no harmful emissions, such as carbon dioxide (CO%u2082) or nitrogen oxides (NOx). This transition contributes to the improvement of air quality, particularly in urban areas and regions sensitive to environmental changes. The deployment of hydrogenpowered trains in India is a major move towards the modernisation of the Indian railway system and its environmental reduction. Although the transition to hydrogen fuel has definite benefits, including reduced emissions and less reliance on fossil fuels, it also comes with challenges. These are the requirements for dedicated infrastructure for the production, storage, and refuelling of hydrogen, as well as the high upfront cost of implementation. Moreover, technological refinement and trials are vital to guarantee the dependability and efficiency of these trains. Through ongoing development and trials, hydrogen trains may become a significant component of India's strategy to decrease carbon emissions in rail transport, providing a cleaner and more environmentally friendly option compared to conventional diesel-fueled trains. Nonetheless, their success relies on surmounting these technical and financial barriers.ConclusionCOVER STORY