The US tightens greenhouse gas emission standards for heavy-duty vehicles
The Environmental Protection Agency (EPA) announced the toughest US standards yet for greenhouse gas emissions from heavy-duty vehicles like big rigs and buses. The rules apply to model year 2027 to 2032 heavy-duty vehicles and are meant to slash emissions from a major source of the pollution causing climate change.
Heavy-duty vehicles are responsible for a quarter of the nation’s transportation-related greenhouse gas emissions. The EPA says its new standards will avoid a billion tons of those emissions by 2055, which would be like eliminating the pollution from 13 million tanker trucks’ worth of gasoline.
Transportation makes up the biggest chunk of the country’s carbon footprint and has...