Tōzai Line (Tokyo Metro)

Tōzai Line
A Tōzai Line 15000 series train
Overview
Other nameLine 5
Native name東西線
StatusIn service
OwnerTokyo Metro Co., Ltd.
Line numberT
LocaleTokyo, Chiba prefectures
Termini
Stations23
Color on map     Sky blue
Service
SystemTokyo subway (Tokyo Metro)
Operator(s)Tokyo Metro Co., Ltd.
Depot(s)Fukagawa, Gyōtoku
Rolling stockTokyo Metro 05/05N series
Tokyo Metro 07 series
Tokyo Metro 15000 series
Tōyō Rapid 2000 series
JR East E231-800 series
Daily ridership1,499,589 (2024)
History
Opened23 December 1964 (1964-12-23)
Last extension1969
Technical
Line length30.8 km (19.1 mi)
Number of tracks2
Track gauge1,067 mm (3 ft 6 in)
Minimum radius200 m (660 ft)
ElectrificationOverhead line, 1,500 V DC
Operating speed100 km/h (62 mph)
Train protection systemNew CS-ATC
Maximum incline4.0%
Route map

JB01
East Japan Railway Company
JB07
0.0 T-01
Nakano
2.0 T-02
Ochiai
3.9 T-03
Takadanobaba
5.6 T-04
Waseda
6.8 T-05
Kagurazaka
8.0 T-06
Iidabashi
8.7 T-07
Kudanshita
moat
 
9.7 T-08
Takebashi
10.7 T-09
Ōtemachi
Tōhoku Shinkansen
11.5 T-10
Nihombashi
12.0 T-11
Kayabachō
Kamejima River
Ōshima River
Kawanishi tributary
13.8 T-12
Monzen-Nakachō
Heikyū River
14.9 T-13
Kiba
Dai-Yoko River
Sōbu
Main Line
│
Fukagawa Depot
and workshop
15.8 T-14
Tōyōchō
Shiohama Canal
JR Freight Sōbu Main Line
Etchūjima Freight Branch
17.0 T-15
Minami-Sunamachi
Arakawa-Nakagawa Bridge
Naka River
19.7 T-16
Nishi-Kasai
20.9 T-17
Kasai
22.8 T-18
Urayasu
24.0 T-19
Minami-Gyōtoku
25.5 T-20
Gyōtoku
26.8 T-21
Myōden
Gyōtoku Depot
28.9 T-22
Baraki-Nakayama
Shinma River
30.8 T-23
Nishi-Funabashi
JB30
TR01
JB33
Tsudanuma
TR09
Tōyō-Katsutadai

The Tōzai Line (東西線, Tōzai-sen; lit. 'East-West Line') is a rapid transit line in Tokyo and Chiba Prefecture, Japan, owned and operated by Tokyo Metro. The line runs between Nakano in Nakano-ku, Tokyo and Nishi-Funabashi in Funabashi, Chiba Prefecture.

The Tōzai Line was referred to as Line 5 during the planning stages; the seldom-used official name is Line 5 Tōzai Line (5号線東西線, Go-gō-sen Tōzai-sen).

In 2024, the line carried a daily average of nearly 1.5 million passengers, making it the busiest line on the Tokyo subway network. On maps, diagrams and signboards, the Tōzai Line is shown using the color "sky blue" and its stations are given numbers using the letter "T".