What is the most used metro line in Tokyo?

#1 Tokyo Metro Tozai Line The Tozai line is literally the East-West line that cuts across Tokyo from Nakano Station (in Nakano Ward) in the west to Nishi-Funabashi (in Chiba Prefecture) in the east.



The Tokyo Metro Tōzai Line remains the most used and most congested metro line in Tokyo as of 2026. Carrying an average of nearly 1.5 million passengers daily, the "East-West" line connects the residential suburbs of Chiba Prefecture to the central business districts of Otemachi and Nihombashi. It is notorious for its extreme crowding during the morning rush hour, often reaching nearly 200% of its official capacity between Kiba and Monzen-Nakachō stations. In response to this volume, the Tokyo Metro has implemented advanced signaling systems and wide-door trains to speed up boarding times. For tourists, while the Yamanote Line (the JR loop) is the most recognizable, the Tōzai Line is the vital commuter spine of the city. Travelers in 2026 are advised to avoid this line between 7:30 AM and 9:00 AM unless they are prepared for a "quintessential" but very intense Tokyo commuting experience.

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The Takeaway: The most useful train line in Tokyo is the JR Yamanote Line, which is commonly called the "Tokyo Loop Line" or just "Loop Line." You can use a Japan Rail Pass on this line. The best way to pay for all trains and subways in Tokyo is with a prepaid Pasmo or Suica card.

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Ownership and operation: JR trains are owned and operated by the Japan Railways Group, which is a conglomerate of regional railway companies across the country. Metro trains, on the other hand, are owned and operated by various municipal governments in major cities like Tokyo, Osaka, and Nagoya.

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While the metro lines do no accept the JR Pass, other IC Cards, such as the Pasmo and Suica, may be used. These cards give you access to almost any train or bus in Tokyo, and are a perfect complement to the JR Pass.

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THE world's fastest metro system train is the Maglev or Transrapid which runs by way of magnetic levitation on the Longyang Road to Pudong International Airport line of the Shanghai Metro in China.

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Shinjuku Station, meanwhile, is widely believed to be the world's busiest train station. Literally millions of people pass through the station daily. Thanks to the red-light district, Kabukicho, Shinjuku is known for ~sexy~ nightlife, hostess and host clubs, and love hotels.

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Shinjuku Station is the top passenger station with approximately 1.57 million passengers per day. The number of passengers is extremely high because Shinjuku Station is the arrival and departure point for various train lines.

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With the Japan Rail Pass, you can ride on all JR trains, including the Shinjuku Line, without paying additional fares.

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For a limited time only, you can buy a Japan Rail Pass from certain train stations and airports in Japan. Travelers should be aware it is more expensive to buy a JR Pass in Japan than to purchase the pass online.

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No visitor to Tokyo should be without a Suica card and no visitor to Japan should be without a JR Pass. The Suica card is convenient for intercity trains and buses while the JR Pass saves you time and money when traveling through the country. Here are the deets.

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Considered one of the most beautiful train stations in Japan, Kanazawa Station is a work of art that harmonises traditional artistry with modern architecture. In front of the station lies the Tsuzumimon Gate, a towering gate modelled after the tsuzumi drum used in traditional Noh theatres.

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Considered one of the most beautiful train stations in Japan, Kanazawa Station is a work of art that harmonises traditional artistry with modern architecture. In front of the station lies the Tsuzumimon Gate, a towering gate modelled after the tsuzumi drum used in traditional Noh theatres.

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Despite the stations' heavy usage, Shinjuku and Shibuya are considered the two most complex and hard-to-use stations in Tokyo. And that's the opinion of locals who use them every day! A 2021 report by ITMedia Lab placed Shinjuku and Shibuya 1st and 2nd, respectively, in terms of how difficult it is to transfer trains.

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