Tokyo Metro Namboku Line

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Tokyo Metro Namboku Line
A Namboku Line 9000 series train
Overview
Other name(s)	N
Native name	東京メトロ南北線
Owner	Tokyo Metro
Line number	7
Locale	Tokyo
Termini	Meguro Akabane-Iwabuchi
Stations	19
Color on map	Teal (#00AC9B)
Service
System	Tokyo subway
Operator(s)	Tokyo Metro
Depot(s)	Ōji
Rolling stock	Tokyo Metro 9000 series Saitama Rapid Railway 2000 series Tokyu 3000 series Tokyu 5080 series Tokyu 3020 series
Daily ridership	522,736 (2017)[1]
History
Opened	29 November 1991; 32 years ago (1991-11-29)
Technical
Line length	21.3 km (13.2 mi)
Number of tracks	Double-track
Track gauge	1,067 mm (3 ft 6 in)
Minimum radius	160.351 m (526.09 ft)
Electrification	1,500 V DC (overhead catenary)
Operating speed	80 km/h (50 mph)
Train protection system	New CS-ATC, ATO
Maximum incline	3.5%
Route map

The Tokyo Metro Namboku Line (東京メトロ南北線, Tōkyō Metoro Nanboku-sen, South-North Line) is a subway line owned and operated by Tokyo Metro in Tokyo, Japan. The line runs between Meguro in Shinagawa and Akabane-Iwabuchi in Kita. The Namboku Line was referred to as Line 7 during the planning stages, thus the seldom-used official name is Line 7 Namboku Line (7号線南北線, Nana-gō-sen Nanboku-sen).

On maps, diagrams and signboards, the line is shown using the color emerald (previously coded "teal"), and its stations are given numbers using the letter "N".