Toei Asakusa Line

Toei Asakusa Line
A Toei Asakusa Line 5500 series train
Overview
Other name	Line 1
Native name	都営浅草線
Status	In service
Owner	Tokyo Metropolitan Bureau of Transportation
Line number	A
Locale	Tokyo
Termini	Nishi-magome Oshiage
Stations	20
Color on map	Rose
Service
Type	Rapid transit, Heavy rail
System	Tokyo subway (Toei Subway)
Operator	Tokyo Metropolitan Bureau of Transportation
Depot	Magome
Rolling stock	Toei 5500 series, etc.
Daily ridership	718,855 (FY2016)
History
Opened	4 December 1960 (1960-12-04)
Last extension	1968
Technical
Line length	18.3 km (11.4 mi)
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Minimum radius	161 m (528 ft)
Electrification	Overhead line, 1,500 V DC
Operating speed	70 km/h (43 mph)
Signalling	Automatic closed block
Train protection system	C-ATS
Maximum incline	3.5%
Route map SR01 Shibayama-Chiyoda Shibayama Railway KS42 Narita Airport Terminal 1 KS44 Higashi-Narita Keisei Higashi-Narita Line KS40 Keisei Narita Keisei Main Line HS14 Imba Nihon-idai Keisei Narita Airport Line KS10 Keisei-Takasago Naka River KS09 Aoto to Keisei Ueno Arakawa Tōbu Isesaki Line Tōbu Kameido Line Keisei Oshiage Line Oshiage Hanzōmon Line Tokyo Skytree Skytree Line Honjo-azumabashi Sumida River Asakusa Ginza and Skytree lines Ōedo Line Kuramae Asakusabashi Chūō–Sōbu Line Bakurochō Sōbu Line (Rapid) Higashi-nihombashi Bakuroyokoyama Shinjuku Line Ningyōchō Hibiya Line Suitengūmae Hanzōmon Line Nihombashi Tōzai Line Ginza Line Tokyo Proposed Takarachō Keiyō Line Yūrakuchō Line Higashi-ginza Hibiya Line Yamanote and Keihin–Tōhoku lines Ginza Line Shimbashi Yurikamome Daimon Ōedo Line Hamamatsuchō Yamanote, K–T, Tokyo Monorail Mita Mita Line Tamachi Yamanote and Keihin–Tōhoku lines Sengakuji Takanawadai KK01 Shinagawa Yamanote, K–T, Tōkaidō, Yokosuka Gotanda Yamanote Line Tōkyū Ikegami Line Togoshi-ginza Togoshi Ōimachi Line Nakanobu Magome Yokosuka Line and Tōkaidō Shinkansen Nishi-magome Magome Depot KK11 Keikyū Kamata KK17 Haneda Airport Domestic Terminal Keikyu Airport Line KK37 Yokohama KK61 Horinouchi Keikyu Main Line KK72 Misakiguchi Keikyu Kurihama Line

The Toei Asakusa Line (都営浅草線, Toei Asakusa-sen) is a subway line in Tokyo, Japan, operated by the municipal subway operator Toei Subway. The line runs between Nishi-magome in Ōta and Oshiage in Sumida. The line is named after the Asakusa district, a cultural center of Tokyo, under which it passes.

The Asakusa Line was the first subway line in Japan to offer through services with a private railway. Today, it has more through services to other lines than any other subway line in Tokyo. Keikyu operates through trains on the Keikyu Main Line to Misakiguchi and the Keikyu Airport Line to Haneda Airport Domestic Terminal. Keisei Electric Railway operates through trains on the Keisei Oshiage Line to Inba-Nihon-Idai and the Keisei Main Line to Narita Airport Terminal 1, and Shibayama Railway runs trains via the Keisei Main Line and the Shibayama Railway Line to Shibayama-Chiyoda. Via its through services with Keisei and Keikyu, the Asakusa line is the only train line that offers a direct connection between Tokyo's two main airports.

The Asakusa Line is often split into two routes: Oshiage–Sengakuji and Sengakuji–Nishi-magome; only some trains make all station stops on the line, as many trains travel on the Keikyu Main Line south of Sengakuji.

On maps and signboards, the line is shown in the color rose. Stations carry the letter "A" followed by a two-digit number inside a more reddish vermilion circle.

In fiscal year 2023, the Asakusa Line was Toei's most profitable line, earning 8.67 billion yen in surplus (a 26.4% profit margin). It served 683,003 passengers on average per day, the third highest in the Toei network.