OBS_VALUE: <ul><li><a href=https://www.law.go.kr/법령/철도산업발전기본법 target=_blank>Framework Act on Railroad Industry Development(철도산업발전기본법, Enforcement Date: 30 October 2003 (Law No. 6955), last  updated on 10 September 2020, Articles 17, 20, 21.)</a></li><li><a href=https://english.kr.or.kr/sub/info.do?m=010101 target=_blank>Korea National Railway official website</a></li><li><a href=https://www.law.go.kr/법령/한국철도공사법 target=_blank>Korea Railroad Corporation Act(한국철도공사법, Enforcement Date: 01 January 2005, last updated on 14 March 2019)</a></li></ul>