What are EPAs emission standards and why are they important?
Cars, trucks and other mobile sources account for almost a third of the total air pollution in the United States. EPA’s vehicle emission standards for cars and trucks have been in place since the early 1970’s. Since that time, vehicle emissions standards have been made increasingly stringent to address this national air quality problem. View the summary of current and historical emission standards. (6 pp, 54k, About PDF)EPA’s newest standards, called “Tier 2,” provide auto manufacturers with an array of emissions standards they can choose for any particular vehicle model, as long as all the new vehicles they sell in a given model year fall below a required average (bin 5). The emission standards are in effect from the time the vehicle is produced until the vehicle reaches the legally-defined end of its useful life (10 years or 120,000 miles for most cars) – manufacturers are responsible for designing vehicles that will pollute no more than the emission standard limits.
Cars, trucks and other mobile sources account for almost a third of the total air pollution in the United States. EPA’s vehicle emission standards for cars and trucks have been in place since the early 1970’s. Since that time, vehicle emissions standards have been made increasingly stringent to address this national air quality problem. View the summary of current and historical emission standards. (6 pp, 54k, About PDF) EPA’s newest standards, called “Tier 2,” provide auto manufacturers with an array of emissions standards they can choose for any particular vehicle model, as long as all the new vehicles they sell in a given model year fall below a required average (bin 5). The emission standards are in effect from the time the vehicle is produced until the vehicle reaches the legally-defined end of its useful life (10 years or 120,000 miles for most cars) – manufacturers are responsible for designing vehicles that will pollute no more than the emission standard limits. More informatio
