Toei Asakusa Line

The is a subway line in Tokyo, Japan, operated by the municipal subway operator Toei Subway. The line runs between in Ōta and 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 and the Keikyu Airport Line to . Keisei Electric Railway operates through trains on the Keisei Oshiage Line to and the Keisei Main Line to , and Shibayama Railway runs trains via the Keisei Main Line and the Shibayama Railway Line to . 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.

Services

Local (普通 futsū) trains operate between Nishi-Magome and Sengakuji approximately every ten minutes and are timed to connect to Keikyu through service trains at Sengakuji.
Rapid service (快速 kaisoku) trains operate between Nishi-Magome and Keisei Sakura Station approximately every twenty minutes. They make all station stops on the Asakusa Line.
Limited Express (快特 kaitoku) trains operate approximately every twenty minutes. They generally use Keikyu rolling stock and have a southern terminus at Misakiguchi Station or Keikyu Kurihama Station. They operate as Limited Express trains only on the Keikyu Line, and provide local service on the Asakusa Line and local/rapid services on the Keisei Oshiage Line. Their northern terminus is generally either Aoto Station or Keisei Takasago Station, but select trains operate to Narita International Airport.
Limited Express (快特 kaitoku) trains operate approximately every twenty minutes and make all stops (local service) on the Asakusa Line, providing Limited Express service on the Keikyu Line between Sengakuji and . Their northern terminus is usually either Inzai-Makinohara Station or Inba-Nihon-Idai Station on the Hokuso Railway.
Airport Limited Express (エアポート快特 eapōto kaitoku) trains operate approximately every twenty minutes, and skip certain stations while operating on the Asakusa Line. Their northern terminus alternates between "Access Express" (アクセス特急 akusesu tokkyū) service to Narita International Airport and Limited Express service to either Aoto or Takasago. The total travel time from Haneda Airport to Narita Airport on this train is approximately one hour and 46 minutes.
Express (急行 kyūkō) Trains operate as Express trains only on the Keikyu Line, and provide local services on the Asakusa Line and the Keisei Line. These trains only operate southwards. Their southern terminus is usually . However, there is one train on weekends that operates towards Zushi-Hayama Station (As of 8 October 2025). Service for this train will start at Keisei Takasago Station and will arrive at Oshiage Station at 22:55.

History

Planning (1920–1941)

The original plan for what is now the Asakusa Line was included in a report Tokyo City Notification No. 2 of 1920 (大正9年東京市告示第2号) in 1920. The proposal outlined a route as Line 1 connecting “Shinagawa Yatsuyama – Shimbashi – Tsukiji – Ryogoku West – Kaminarimon – Oshiage”.

A construction patent for this route was granted to the Tokyo Underground Light rail and Tokyo Railway (東京鉄道). However, following the Great Kantō Earthquake of 1923, the patent was revoked along with those for other planned lines because construction had not yet commenced.

On September 1, 1941, following the establishment of the Teito Rapid Transit Authority, all route licenses held by Tokyo City, the Tokyo Underground Railway, the Tokyo Rapid Railway, and the Keihin Underground Railway were transferred to the Teito Subway in exchange for a fee.

From 1998 to 2002, the Asakusa Line was used as part of a rail connection between Tokyo's two major airports, Haneda and Narita. While a few trains still run between the airports, the service has greatly diminished in frequency since 2002.

In 2005, a research group of government, metropolitan and railway company officials proposed that the Asakusa Line be connected to Tokyo Station via a spur to the north of Takarachō Station. This would provide Tokyo Station's first direct connection to the Toei subway network. It would also make it possible to reach Haneda Airport in 25 minutes (versus 35 minutes today) and Narita Airport in 40 minutes (versus 57 minutes today). This plan has yet to be finalized or formally adopted. Authorities are re-considering a similar plan as part of the infrastructure improvements for the 2020 Summer Olympics; the proposed line would cut travel time to Haneda from 30 minutes to 18 minutes, and to Narita from 55 minutes to 36 minutes, at a total cost of around 400 billion yen.

Stations

center|thumb|900x900px|List of Toei Asakusa Line stations

All stations are located in Tokyo.
The Airport Limited Express/Access Express stops at stations marked "●", skips those marked "|". All other services stop at every station.

{| class="wikitable" rules="all"

!rowspan="2"|No.

!rowspan="2"|Station

!rowspan="2"|Japanese

!colspan="2"|Distance (km)

!rowspan="2"|Airport Ltd. Exp./Access Exp.

!rowspan="2"|Transfers

!rowspan="2"|Location

!Between stations

!From Nishi-magome

|西馬込

|style="text-align:right;"| –

|style="text-align:right;"|0.0

|rowspan="6" style="vertical-align:bottom; text-align:center; width:1em; font-size:80%; line-height:1.1;"|Keikyu Main Line Through to Keikyu Airport Line

|rowspan="2"|Ōta

|馬込

|style="text-align:right;"|1.2

|中延

|style="text-align:right;"|0.9

|style="text-align:right;"|2.1

| (OM04)

|rowspan="3"|Shinagawa

|戸越

|style="text-align:right;"|1.1

|style="text-align:right;"|3.2

| (: IK03)

|五反田

|style="text-align:right;"|1.6

|style="text-align:right;"|4.8

|高輪台

|style="text-align:right;"|0.7

|style="text-align:right;"|5.5

|Minato

|colspan="8"|↑ Through-services to/from ↑

, , via
via
via the
, , via

|泉岳寺

|style="text-align:right;"|1.4

|style="text-align:right;"|6.9

|style="text-align:center;"|●

|rowspan="4"|Minato

|三田

|style="text-align:right;"|1.1

|style="text-align:right;"|8.0

|style="text-align:center;"|●

|大門

|style="text-align:right;"|1.5

|style="text-align:right;"|9.5

|style="text-align:center;"|●

|新橋

|style="text-align:right;"|1.0

|style="text-align:right;"|10.5

|style="text-align:center;"|●

|東銀座

|style="text-align:right;"|0.9

|style="text-align:right;"|11.4

|style="text-align:center;"|｜

| (H-10) Underground passage to , and stations

|rowspan="5"|Chūō

|宝町

|style="text-align:right;"|0.8

|style="text-align:right;"|12.2

|style="text-align:center;"|｜

|日本橋

|style="text-align:right;"|0.8

|style="text-align:right;"|13.0

|style="text-align:center;"|●

|人形町

|style="text-align:right;"|0.8

|style="text-align:right;"|13.8

|style="text-align:center;"|｜

|東日本橋

|style="text-align:right;"|0.7

|style="text-align:right;"|14.5

|style="text-align:center;"|●

|浅草橋

|style="text-align:right;"|0.7

|style="text-align:right;"|15.2

|style="text-align:center;"|｜

| (JB20)

|rowspan="3"|Taitō

|蔵前

|style="text-align:right;"|0.7

|style="text-align:right;"|15.9

|style="text-align:center;"|｜

| (E-11)

|浅草

|style="text-align:right;"|0.9

|style="text-align:right;"|16.8

|style="text-align:center;"|●

|本所吾妻橋

|style="text-align:right;"|0.7

|style="text-align:right;"|17.5

|style="text-align:center;"|｜

|rowspan="2"|Sumida

| (SKYTREE)

|押上 (スカイツリー前)

|style="text-align:right;"|0.8

|style="text-align:right;"|18.3

|style="text-align:center;"|●

|colspan="8"| ↓ Through-services to/from ↓

via
, , , , via
, via
via
via the and

Rolling stock

A variety of rolling stock is in use due to the large number of through service operators on the line, all of which use standard gauge tracks and 1,500 V DC electrification via overhead lines. Currently, six operators run trains onto the Asakusa Line, the most of any Tokyo subway line, and the line is unique as the only subway line in Tokyo with through services onto standard gauge railways (all other through services are with narrow gauge lines).

Toei

File:Toei-Type5525-8.jpg|A Toei 5500 series EMU

</gallery>

Toei 5500 series

Keisei Electric Railway

File:Keisei 3000 Series 3033F 20191002.jpg|A Keisei 3000 series EMU

File:Keisei-Series3053.jpg|A Keisei 3050 series EMU

File:Keisei-Type3100-3151.jpg|A Keisei 3100 series EMU

File:Keisei 3400 series Keisei Main Line 20170921.jpg|A Keisei 3400 series EMU

File:Keisei-Series3700-3701.jpg|A Keisei 3700 series EMU

</gallery>

Keisei 3000 series
Keisei 3050 series
Keisei 3100 series
Keisei 3400 series
Keisei 3700 series

Keikyu

File:Keikyu-Type600-608-1.jpg|A Keikyu 600 series EMU

File:Keikyu-Type1000-176.jpg|A Keikyu N1000 series EMU

File:Keikyu 1500 Series EMU 015.JPG|A Keikyu 1500 series EMU

</gallery>

Keikyu 600 series
Keikyu N1000 series
Keikyu 1500 series

Hokuso Railway

File:Hokuso-Series7311.jpg|A Hokuso 7300 series EMU

File:Hokuso-7500 7502.jpg|A Hokuso 7500 series EMU

</gallery>

Hokuso 7300 series
Hokuso 7500 series

Chiba New Town Railway

File:Hokuso-Series9101.jpg|A Chiba New Town Railway 9100 series

File:Hokuso 9200 series 9201F 20190321.jpg|A Chiba New Town Railway 9200 series EMU

File:Chiba-New-Town Series9801.jpg|A Chiba New Town Railway 9800 series

</gallery>

Chiba New Town Railway 9100 series
Chiba New Town Railway 9200 series
Chiba New Town Railway 9800 series

Shibayama Railway

File:Series 3600 of Shibayama Railways.jpg|A Shibayama 3600 series EMU

</gallery>

Shibayama 3600 series

Former rolling stock

Toei 5000 series
Toei 5200 series
Toei 5300 series
Keikyu 1000 series
Keisei 3000 series (original type)
Keisei 3050 series (original type)
Keisei 3100 series (original type)
Keisei 3150 series
Keisei 3200 series
Keisei 3300 series
Keisei 3500 series
Hokuso 7000 series
Hokuso 7050 series
Hokuso 7150 series
Hokuso 7250 series
Hokuso 7260 series
Chiba New Town Railway 9000 series

References

External links

Bureau of Transportation, Tokyo Metropolitan Government