The biggest barrier to expanding SunLine Transit Agency's hydrogen fuel cell bus operations is the lack of hydrogen-specific regulations addressing safety, according to researchers.
Without codes and standards specifically designed for the unique characteristics of hydrogen, it's possible that fire-protection and code and safety officials will raise issues that could delay the commercial introduction of hydrogen fuel cell buses by many years, according to Hydrogen Fuel Cell Bus Evaluation by Leslie Eudy and Richard Parish, (National Renewable Energy Laboratory (NREL), G