Diesel Emissions Reduction Act of 2025

The Diesel Emissions Reduction Act funds grants and programs to help replace or retrofit dirty older diesel engines — in school buses, freight trucks, construction equipment, and other vehicles — with cleaner technology. The current authorization expired in 2024. This bill would simply extend the program through 2029, keeping the funding pipeline open for five more years. It's a bipartisan, one-line change that ensures communities can continue applying for federal help to reduce diesel pollution.