Real-time Congestion Display by Train Car Introduced at Hibiya and Tozai Line Stations

Tokyo Metro Co., Ltd. (Headquarters: Taito-ku, Tokyo; President: Akihiro Kosaka; hereinafter 'Tokyo Metro') announces that starting Monday, March 30, 2026, in order to promote the leveling of congestion, it will begin displaying real-time congestion status by train car on displays installed inside the stations at a total of 5 stations: Minowa and Iriya stations on the Hibiya Line (bound for Naka-meguro), and Minami-sunamachi, Kasai, and Urayasu stations on the Tozai Line (bound for Nakano), which are located in congested sections.

Based on congestion information per car measured in real-time using depth cameras and AI, the displays will show the 'actual congestion of arriving trains' and 'predicted congestion for each station after boarding'. Because passengers can check congestion predictions and actual crowding right before boarding, customers—especially those taking the Hibiya Line toward Naka-meguro or the Tozai Line toward Nakano during the morning rush hour—will be able to select and board the most optimal car or train for themselves depending on the crowding conditions at that moment.

This initiative follows proof-of-concept experiments conducted at Waseda Station on the Tozai Line in fiscal 2022 and Aoyama-itchome Station on the Hanzomon Line in fiscal 2023, which confirmed a certain level of effectiveness in encouraging passengers to move to emptier cars by providing real-time congestion information.

The train congestion measurement system using depth cameras and AI is currently introduced only by Tokyo Metro among railway operators. The data is utilized for providing congestion information on the 'Tokyo Metro my! app' and as foundational data when creating train schedules. Furthermore, it received the Special Award at the 21st Japan Railway Award in September 2022.

Tokyo Metro will continue its efforts to level out congestion so that customers can use the subway safely and comfortably.

Overview of 'Real-time Congestion Status Display by Train Car'
1. Display Content
The displays installed inside the stations show 'actual congestion information of arriving trains' and 'subsequent congestion prediction information of departing trains'. The purpose of the congestion information shown on the displays is to present more detailed status compared to the Tokyo Metro my! app, and to allow a wider range of customers to check it, including those unfamiliar with using the app or those in a hurry.