Having spent about six years on developing a range of hydrogen fuel cell-powered trains, mobility solutions provider Alstom is accelerating its refinement and roll out of the zero harmful-emissions trains, especially in Europe, where diesel trains are still pervasive on low-density lines. Across the European Union, the company points out, 46% of railway is not electrified, thereby creating an entry point for an alternative to diesel traction, but with better emissions control to enter the market.