In Incheon Metropolitan City, the government has announced plans to enhance the subsidy for hydrogen fuel-cell buses from 3,600 to 5,000 won per kilogram of fuel in an effort to promote the use of eco-friendly public transportation. This initiative is part of broader goals set by the transportation ministry to replace a quarter of all metropolitan buses in the greater Seoul area with hydrogen-powered buses by 2030, aligning with environmental targets. However, the bus industry has been hesitant to embrace hydrogen buses due to the higher fuel costs in comparison to electric buses, coupled with the insufficient presence of hydrogen charging and maintenance stations across the country. The subsidy increase is anticipated to alleviate these concerns by reducing operation costs by 22% and bringing down yearly fuel expenses to levels akin to those of electric buses. This move is expected to accelerate the adoption of hydrogen fuel-cell buses and contribute to a more sustainable and greener public transportation system.