Toei Mita Line

Toei Mita Line
A Toei 6500 series train at Shin-takashimadaira Station
Overview
Other name	Line 6
Native name	都営三田線
Status	In service
Owner	Tokyo Metropolitan Bureau of Transportation
Line number	I
Locale	Tokyo
Termini	Nishi-takashimadaira Meguro
Stations	27
Color on map	Blue
Service
Type	Rapid transit
System	Tokyo subway (Toei Subway)
Operator	Tokyo Metropolitan Bureau of Transportation
Depot	Shimura
Rolling stock	Toei 6300 series Toei 6500 series Tokyu 3000 series Tokyu 3020 series Tokyu 5080 series Sotetsu 21000 series
Daily ridership	638,365 (2016)
History
Opened	27 December 1968 (27 December 1968)
Last extension	2000
Technical
Line length	26.5 km (16.5 mi)
Track gauge	1,067 mm (3 ft 6 in)
Minimum radius	160 m (520 ft) (Shirokanedai - Shirokane-Takanawa) 161 m (528 ft) (Shirokane-Takanawa - Mita)
Electrification	Overhead line, 1,500 V DC
Operating speed	75 km/h (47 mph)
Signalling	Cab signalling, closed block
Train protection system	New CS-ATC
Maximum incline	3.5%
Route map Through-running onto Tōkyū Meguro Line Meguro Yamanote Line Yamanote Line Shirokanedai Shirokane-takanawa Namboku Line Namboku Line Yamantote & Keihin–Tōhoku lines Asakusa Line Tamachi Yamantote & Keihin–Tōhoku lines Asakusa Line Mita Shibakoen Asakusa Line │ Ōedo Line Onarimon Ginza Line Uchisaiwaichō Chiyoda Line Marunouchi Line Hibiya Hibiya and Chiyoda lines Yūrakuchō Yūrakuchō, Yamantote & Keihin–Tōhoku lines Ōtemachi Tōzai, Chiyoda, Otemachi Marunouchi and Hanzōmon lines Chiyoda Line Marunouchi Line Hanzōmon Line Jimbōchō Hanzōmon Line Shinjuku Line Chūō–Sōbu Line Suidōbashi Kōrakuen Marunouchi and Namboku lines Kasuga Ōedo Line Namboku Line Hakusan Sengoku Yamanote Line Sugamo Shin-koshinzuka Toden Arakawa Line Nishi-sugamo Itabashi Saikyō Line Shin-itabashi Itabashikuyakushomae Itabashi-honchō Motohasunuma Shimura-sakaue Shimura-sanchōme Hasune Nishidai Takashimadaira Shin-takashimadaira Nishi-takashimadaira

The Toei Mita Line (都営三田線, Toei Mita-sen) is a subway line of the municipal Toei Subway network in Tokyo, Japan. The line runs between Nishi-Takashimadaira in Itabashi and Meguro in Shinagawa. Trains continue with direct service into the Meguro Line of Tokyu Corporation for Hiyoshi. The portion between Shirokane-Takanawa and Meguro is shared with the Tokyo Metro Namboku Line.

The line was named after the Mita district in Minato, Tokyo, under which it passes. The name “Mita Line” dates to 1904, when a Tokyo tram line of the same name opened, operating above ground between Hibiya and Mita along the route of the present line.

In fiscal year 2023, the Mita Line was Toei's second most profitable line, earning 6.30 billion yen in surplus (after the Asakusa Line). It served 606,811 passengers on average per day, the lowest in the Toei network.

On maps and signboards, the line is shown in blue. Stations carry the letter "I" followed by a two-digit number.