M2 is a line of the Copenhagen Metro, colored yellow on the map. It runs from Vanløse to Lufthavnen through the center of Copenhagen, sharing track with the M1 from Vanløse to Christianshavn. The line was built along with M1 as part of the redevelopment of Ørestad. The principle of the line was passed in 1992, and construction commenced in 1998. The line opened in several stages between 2002 and 2007. It is owned by Metroselskabet and operated by Metro Service, and operates with a headway between four and twenty minutes. The line is long, and runs in a tunnel through the city center between Lindevang and Amager Strand. It connects the western borough of Vanløse and the municipality of Frederiksberg to the city center of Copenhagen, as well as the eastern parts of Amager and Copenhagen Airport. It provides transfer to the S-train at three stations and to DSB trains at two stations. Its southern end, in the district of Amager Øst, largely follows the same route as a disused railway line, Amagerbanen, along the coast of Øresund. History The background for the metro was the urban development of the Ørestad area of Copenhagen. The principle of building a rail transit system was passed by the Parliament of Denmark on 24 June 1992, with the Ørestad Act. The responsibility for developing the area, as well as building and operating the metro, was given to the Ørestad Development Corporation, a joint venture between Copenhagen Municipality (45%) and the Ministry of Finance (55%). Initially, three modes of transport were considered: a tramway, a light rail system that would have seen trams running underground through the city center, and a rapid transit (metro) system. In October 1994, the Development Corporation chose a light rapid transit system, combining elements of a light rail system and rapid transit to form a low-capacity metro network. The decision to build stage 2, from Nørreport to Vanløse, and stage 3 to the airport, was made by parliament on 21 December 1994. Stage 2 involved the establishment of the company Fredriksbergbaneselskapet I/S in February 1995, owned 70% by the Ørestad Development Corporation and 30% by Fredriksberg Municipality. The third stage would be built by Østamagerbaneselskapet I/S, established in September 1995 and owned 55% by the Ørestad Development Corporation and 45% by Copenhagen County. In October 1996, a contract was signed with the Copenhagen Metro Construction Group (COMET) for