Existing interstate facilities cordon the General Study Area for the project, which includes portions of Georgia, Tennessee, North Carolina, and South Carolina. On the east, the General Study Area runs northeast on I-95 from Savannah to I-26; northwest on I-26 through Columbia and Asheville to I-40; then west on I-40 to Knoxville. On the west, the General Study area runs northwest on I-516 to I-16 from Savannah to I-75 in Macon to Atlanta and north on I-75 to Knoxville. Major cities in the General Study Area include Savannah, GA; Augusta, GA; Atlanta, GA; Columbia, SC; Greenville, SC; Asheville, NC; Chattanooga, TN; and Knoxville, TN. The northern portion of the General Study Area contains large areas of National Forest lands and the Great Smoky Mountains National Park.