Sarah Keys v. Carolina Coach Company, 64 MCC 769 (1955) is a landmark civil rights case in the United States in which the Interstate Commerce Commission, in response to a bus segregation complaint filed in 1953 by a Women's Army Corps (WAC) private named Sarah Louise Keys, broke with its historic adherence to the Plessy v. Ferguson separate but equal doctrine and interpreted the non-discrimination language of the Interstate Commerce Act as banning the segregation of black passengers in buses traveling across state lines.