The transportation sector is the largest source of greenhouse gas emissions in the United States, accounting for 27 percent of all emissions in 2020. Transportation also is a major source of smog-forming nitrogen oxides and particulate matter, which can trigger asthma attacks and other health problems for the most vulnerable among us.
This program will invest $1 billion to help Tribal, state, and local governments and other entities offset the cost of replacing heavy-duty Class 6 and 7 commercial vehicles with zero-emission vehicles, deploy supporting infrastructure, and train and develop the necessary workforce. At least $400 million must go to areas not meeting national air quality standards.