As of April, 2008, Korea has 10 railway and facility operators including KORAIL running both conventional and high speed lines, Korea Rail Network Authority - facility operator and metro subway operators in major cities nationwide including Seoul Metro, Seoul Metropolitan Rapid Transit Corporation, Busan Transportation Corporation, Daegu Metropolitan Subway Corporation, Incheon Rapid Transit Corporation, Gwangju Metropolitan Rapid Transit Corporation, Daejeon Express Train Corporation and Airport Railroad Co., Ltd., the only private railway operator running between Incheon International Airport and Gimpo Airport.