Rapid transit line of the Madrid Metro
Line 4 is a rapid transit line of the Madrid Metro containing 23 stations. Originally opened in 1944, the line has been extended many times over the years, adopting its current form in 2007.
History
Line 4 originally opened on 23 March 1944 between Goya and Argüelles.[1]
In 1958, the line took up a branch of what is now Line 2 from Goya to Diego de León, which originally opened on 17 September 1932. In the 1970s, the line was extended in two stages: from Diego de León to Alfonso XIII in 1973, and later to Esperanza in 1979.
On 1 April 1998, the line was extended from Esperanza to Mar de Cristal, allowing for a connection with the newly-opened Line 8. Later that year on 15 December, the line was extended to Parque de Santa María. On 11 April 2007, an extension further to the current terminus at Pinar de Chamartin opened. At this station, passengers can transfer to Line 1 as well as Metro Ligero Line 1 (ML-1). This station uses an island platform is for departures and a side platform for arrivals.
Rolling stock
Line 4 has used four-car trains of the CAF class 3400 since 2007.
Line 4
