CMAQ

The federal Congestion Mitigation and Air Quality Improvement Program (CMAQ) provides billions of dollars in federal funding for transportation-related projects that alleviate air emissions and traffic congestion. CMAQ dollars are funneled to states; many set aside a portion of these funds specifically for alternative fuel vehicles including natural gas.

EPA

The U.S. Environmental Protection Agency’s (EPA) Diesel Emissions Reduction Act Program (DERA) provides funding to replace or repower older medium- and heavy-duty diesel vehicles.