Line B (Buenos Aires Metro)

Line B (Buenos Aires Metro)

Line B of the Buenos Aires Metro runs 10.15 kilometres (6.31 mi) from Leandro N. Alem to Los Incas/Parque Chas (projected to Juan Manuel de Rosas in Villa Urquiza). Line B opened to the public on 17 October 1930.

In recent years it has held the title of being the most used line by the locals, and it is expected increase even more so after the opening of a section of tunnel between Los Incas station in the neighborhood of Parque Chas and a shopping centre in Villa Urquiza. It was the first line in Buenos Aires whose stations had turnstiles and moving stairways.

It is the only line that uses third rail current collection, while the rest collects electric current from overhead lines. Its gauge of 1435 mm is the same as the rest of the Buenos Aires underground system. The rolling stock currently used on on the B line are former Tokyo Metro (formerly Eidan Subway) 300/500/900 stocks, which was used on Marunouchi Line. These Japanese units were acquired in the early 1990s, and offer less sitting room than the previous setup, increasing the line's capacity during peak hours. The travel time between demand headers is about 25 min.

When excavation was carried out for construction of the Leandro Alem station, the remains of a Mammoth of the Quaternary period where found, which were sent to the Museum of Natural Sciences of La Plata.