Mexico City Metro Line 4

The Mexico City Metro is the largest and busiest heavy-rail rapid transit system in Mexico and second in North America, only behind the New York City Subway.

AS of 2014, the system is composed of 12 lines denominated 1 through 9, 12, A and B, totalling 226.5 km of track length and 195 stations. Of all stations, 115 are underground (either in shallow box-tunnels or deep circular tunnels), 54 are at street-level and 26 are elevated.

Line 1's Chapultepec - Zaragoza section was the first of the system to be opened, on September 4, 1969. The line was brought to its current length in August 22, 1984 with its final extension from Zaragoza to Pantitlán.

Line 1 runs mostly in a shallow box-tunnel just a few meters below the street, except for its initial stretch from Observatorio to Tacubaya, where it starts at street-level and progressively goes down to a deep circular tunnel through Tacubaya, where the box-tunnel begins. Line 1 is served by MP-68, NM-83 and NE-92 trains, built in France, Mexico and Spain in 1968, 1983 and 1992, respectively.

Transfer with other Metro lines is available at Tacubaya (lines 7 & 9), Balderas (line 3), Salto del Agua (Line 8), Pino Suárez (line 2), Candelaria (line 4), San Lázaro (line B) and Pantitlán (lines 5, 9 & A). Transfer to the Metrobús bus rapid transit (BRT) system is available at Tacubaya (line 2), Insurgentes (line 1), Cuauhtémoc (line 3), Balderas (line 3), Pino Suárez (line 4) and San Lázaro (lines 4 & 5).

The line is built under the following avenues:

(Stations are indicated in bold as reference)

Line 2 was the second line in the system to open, in 1970. After two expansions, the line has 24 stations over a total track length of 23.431 km, of which 20.713 km are passenger track. The line has a general northwest-south direction passing through the city center and its color is blue. It starts at the border of the Federal District and the State of Mexico and ends in the city south.

It commutes with line 7 at Tacuba, line 3 at Hidalgo, line 8 at Bellas Artes, line 1 at Pino Suárez, lines 8 and 9 at Chabacano and line 12 at Ermita. At Tasqueña it links with the Mexico City Light Rail to Xochimilco. It used to be served by NC-82 and some NM-83 trains.

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Wikipedia