This is a good article. Follow the link for more information. 3 Mortensrud – 2012-buenos aires metro map pdf-27 at 11-55-35.
101 stations of which 17 are underground or indoors. In 2016, the system had an annual ridership of 106 million. 1942, connecting the line from Jar to Kolsås to Nationaltheatret, and making it a rapid transit and the replacement of stock with wide suburban standard. 1975, as Oslo Sporveier gradually took over the operation of the western suburban lines. 1954, the city council decided to build the T-bane network in Eastern Oslo with four branches. 1964 to 1978, 162 cars in three-car configurations were delivered for the eastern network. This station was forced to close in 1983, due to water leakage, and when it opened again in 1987, renamed Stortinget, the west network tunnel had also been extended there.
Through services were not possible at the time because of incompatibility of signaling and power equipment. Røa Line followed in 1995. 81, with an additional 16 converted from T1000. The following year, construction work caused a tunnel to collapse on the Grorud Line—the system’s busiest—forcing a shutdown of the line until December, and creating a havoc of overcrowded replacement buses. At the same time the Kolsås Line was closed for upgrade to metro standard. 2006 for upgrade to metro standard.
Disagreements between the two counties means the upgrade will be done separately on the two sides of the municipal boundary, with the Oslo side opening first. The current route network was introduced on 3 April 2016, with the opening of the connection tunnel from Økern to Sinsen and the new Løren station. There are five lines, numbered 1 through 5, each color-coded. They all pass through the Common Tunnel, serving eight branch lines. In addition two lines operate to the Ring Line.
Two branches are served by two lines each: the Grorud branch is served by both lines 4 and 5, while the Lambertseter branch has full-time service by line 4 and limited service by line 1. The Grorud and Furuset Line head northeast into Groruddalen, while the other two eastern branches head south into Nordstrand. On the west side, the Holmenkoll and Sognsvann Line cover the northern boroughs of Oslo, along with the Ring Line that connects the northeastern and northwestern parts of town. The Kolsås and Røa Line reach deep into the neighbouring municipality of Bærum. All the lines run through the Common Tunnel before reaching out to different lines, or into the Ring. A reduced half-hourly service operates on all lines during early weekend mornings.