Operators
The metro is operated by its own company, under the Department of Public Works, City Planning, and Transportation of the autonomous community of Madrid. The passage between Puerta de Arganda (Line 9) and Arganda del Rey (Line 9) is operated by Transportes Ferroviarios de Madrid (TFM). All of Madrid's rapid transit systems are members of the Consorcio Regional de Transportes, which sells monthly passes for unlimited use of the metro, bus and commuter train networks within the area covered by the pass.
Read more about this topic: Madrid Metro