Ring Line (Oslo)

Ring Line
The Ring Line to the right, at Storo
Overview
Native name	T-baneringen
Owner	Sporveien
Termini	Ullevål stadion Carl Berners plass
Stations	3
Service
Type	Rapid transit
System	Oslo Metro
Operator(s)	Sporveien T-banen
History
Opened	20 August 2003 to Storo 20 August 2006 to Carl Berners plass
Technical
Line length	5 km (3.1 mi)
Number of tracks	Double
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Electrification	750 V DC third rail
Operating speed	70 km/h (43 mph)
Route map Legend Sognsvann Line Ullevål stadion 1934 Sognsvann Line Nydalen 2003 Storo 2003 to Gjøvik Line Sinsen 2006 Løren Line Grorud Line Carl Berners plass 1966 Grorud Line This diagram: view talk edit

The Ring Line (Norwegian: T-baneringen or Ringbanen) is the newest rapid transit loop line of the Oslo Metro of Oslo, Norway. It connects to the Sognsvann Line in the west and the Grorud Line in the east; along with these two lines and the Common Tunnel, the Ring Line creates a loop serving both the city centre and Nordre Aker borough. The 5.0 kilometres (3.1 mi)-long line has three stations: Nydalen, Storo and Sinsen. Four-fifths of the line runs within two tunnels, with the 1.0-kilometer (0.62 mi) section between Storo and Sinsen, including both stations, being the only at-grade part. The line connects to the Grorud Line north of Carl Berners plass and with the Sognsvann Line north of Ullevål stadion.

Planning for the line began in the late 1980s, and the city council approved the line 1997. Construction started in 2000; Nydalen and Storo opened on 20 August 2003, and Sinsen opened on 20 August 2006. The line cost 1,348 million kr to build and was financed through Oslo Package 2. The Ring Line is served by lines 4 and 5 of the metro, operated by Sporveien T-banen on contract with the Ruter transport authority. All lines operate each fifteen minutes. Nydalen and Storo are such located that trains in either direction use the same time along the loop, effectively giving a five-minute headway to the city centre. After the opening of the line, the areas around the stations have had increased urban redevelopment. The infrastructure is owned and maintained by the municipal company Sporveien.