Japan: busiest main railway lines in Tokyo 2021

In the fiscal year 2021, the Toei-operated Mita Line in Japan's Greater Tokyo Area had the busiest main railway line section, reaching a congestion rate of 131 percent between the stations Nishi-sugamo and Sugamo.
Due to the COVID-19 pandemic, congestion rates decreased in Tokyo from an average of 163 percent to 108 percent. If also including other than main sections, the Nippori-toneri Liner even surpassed the Mita Line's congestion.

Main railway line sections with the highest congestion rates in Japan's Greater Tokyo Area in fiscal year 2021

Characteristic	Congestion rate
Mita Line, Nishi-sugamo - Sugamo	131%
Tozai Line, Kiba - Monzen-nakacho	128%
Hibiya Line, Minowa - Iriya	127%
Chiyoda Line, Machiya - Nishi-nippori	126%
Shinjuku Line, Nishi-ojima - Sumiyoshi	121%
Chuo Line (Rapid), Nakano - Shinjuku	120%
Keihin-tohoku Line, Kawaguchi - Akabane	118%
Odawara Line, Setagaya-daita - Shimo-kitazawa	117%
Keio Line, Shimo-Takaido - Meidaimae	116%
Toyoko Line, Yutenji - Naka-meguro	116%

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Release date

July 2022

More information

Region

Japan

Survey time period

October to November 1, 2021; the Japanese fiscal years start on April 1 of the stated year and end on March 31 of the following year

Special properties

including only main sections*; congestion rates of 115 and over**

Supplementary notes

*Main sections refer to those sections that the Ministry of Land, Infrastructure, Transport and Tourism (MLIT) has surveyed continuously in its congestion statistics.
**According to the source, the MLIT defines a 100 percent level as a situation where all the seats in the train are taken and the standing passengers can find a strap to hold on to, while 180 percent is a situation where a passenger can, with some difficulty, read a folded newspaper. The rate represents the average level of congestion amid the busiest hour.

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