The Obama administration has proposed new clean air and fuel economy (CAFE) standards for cars and trucks, including federal limits for tailpipe emissions. The new CAFE standard will increase efficiency beginning in 2012 and to 35.5 miles per gallon in 2016, an increase from the current standard of 27.5 miles per gallon. The proposal would also limit carbon dioxide emissions to an average of 250 grams per mile by 2016, a figure that corresponds to anticipated carbon dioxide emissions when a vehicle gets 35.5 miles per gallon. According to the White House, the new standards would prevent 950 million metric tons of greenhouse gas emissions from 2012-2016. EPA Administrator Lisa Jackson said, “This marks a significant advance in our effort to protect health and the environment.” The new CAFE standards will begin with model year 2012 vehicles.