Metro Ligero

Line ML-1
Pinar de Chamartín Fuente de la Mora Virgen del Cortijo Antonio Saura Álvarez de Villaamil Blasco Ibáñez María Tudor Palas de Rey Las Tablas

Line ML-1 opened between Pinar de Chamartín and Las Tablas on 24 May 2007, with 5.4 kilometres (3.4 mi) and nine stations, five of which are underground. Both termini offer connections to lines of the Madrid Metro. The only above-ground stations are Antonio Saura, Álvarez de Villaamil, Palas de Rey, and Las Tablas. Line ML-1 serves the new neighbourhoods of Sanchinarro and Las Tablas, in the Fuencarral district.

Line ML-2
Colonia Jardín Prado de la Vega Colonia de los Ángeles Prado del Rey Somosaguas Sur Somosaguas Centro Pozuelo Oeste Prado de las Bodegas future station Bélgica Dos Castillas Campus de Somosaguas Avenida de Europa Berna Estación de Aravaca

Line ML-2 opened on 27 July 2007, between Colonia Jardín and Estación de Aravaca in the neighbourhood of Aravaca, in the western communities of Boadilla del Monte and Pozuelo de Alarcón. It is 8.7 kilometres (5.4 mi) long and has 13 stations, three of which are underground. They are Colonia Jardín, Somosaguas Sur, and Avenida de Europa. Line ML-2 also serves the Complutense University of Madrid. As part of the project, provision has been made for a future station at Prado de las Bodegas, which is subject to further development. The station will also provide a connection to the planned Metro Ligero Line ML-4, to Estación de Las Rozas.

Line ML-3
Colonia Jardín Ciudad de la Imagen José Isbert Ciudad del Cine Cocheras Retamares Retamares Oeste future station Montepríncipe Ventorro del Cano Prado del Espino Ciudad Financiera Este future station Ciudad Financiera Oeste future station Cantabria Ferial de Boadilla Boadilla Centro Nuevo Mundo Siglo XXI Infante Don Luis Puerta de Boadilla

Line ML-3 also opened on 27 July 2007, between Colonia Jardín and Puerta de Boadilla, with 13.7 kilometres (8.5 mi) and 15 stations, two of which are underground. The two are Colonia Jardín and Montepríncipe (which is in an open cut between two separate tunnels). Line ML-3 serves Ciudad de la Imagen, an employment centre with an audiovisual theme, and ends in Boadilla del Monte. The first 50 to 75 metres (164 to 246 ft) of track are shared with Line ML-2. As with Line ML-2, Line ML-3 serves the western suburbs of Madrid. Both lines are in a special fare zone designated as "Metro Ligero Oeste". Provision has been made for three additional stations on the line: Retamares Oeste, Ciudad Financiera Este, and Ciudad Financiera Oeste. None of the three are scheduled to open until further development takes place.

The Parla Tram is also known as ML-4.[2]

• A new Metro Ligero line, Line ML-4, is proposed from the new station Prado de las Bodegas on Line ML-2 to Estación de Las Rozas, with a connection to Cercanías trains. The line would serve the Hospital Puerta de Hierro. Construction of the 14.3 km (8.9 mi), 24 station route is currently underway.
• A tramway is also proposed for the southern suburb of Valdemoro, which would connect the Cercanías railway station and the Infanta Elena Hospital. Both were expected to open by 2011.
• Lines ML-2 and ML-3 are expected to be extended from Colonia Jardín to Aluche by 2020.