Tokyo’s Subway Floors May Soon Tell You Where To Stand

During Tokyo's rush hours, commuters often find themselves crammed onto trains, with those who thought there was no more space squeezing in and the doors finally closing. On September 9, Tokyo Metro launched a trial at Kita-Senju Station, one of the city's busiest, to explore whether technology can steer passenger behavior. The trial, conducted on the Chiyoda Line, comprises a pre-study to analyze foot traffic flow, followed by a phase that employs dynamic floor projections to evenly distribute passengers across train cars.

Tokyo Metro debuted a congestion measurement system at Kita-Senju Station in 2024, then at Machiya Station in 2025, displaying real-time train car crowding levels on monitors. In June, the Metro CrowdNavi website was launched, providing passengers with average crowding data for each line over the past five days. Tokyo Metro is now partnering with Sharp Corporation and electronics supplier Restar to project real-time guidance onto the station concourse floor.

Utilizing Sharp’s advanced Omject projection technology, directional cues will encourage commuters to move toward less crowded trains, reducing localized overcrowding and enhancing the overall transit experience. The trial, currently in its preliminary phase, will run for several months to assess its effectiveness. Once the projection phase commences (dates to be determined), commuters can witness this innovation firsthand at the Chiyoda Line concourse.

Real-time image analysis of pedestrian traffic will determine if the floor guidance successfully influences passenger behavior. While privacy concerns have been raised, Tokyo Metro assures that camera data is immediately converted into person-count information, not stored or transmitted externally. Some commuters remain skeptical about the service's practicality, questioning how anyone can see the projections if the stations are already crowded.

One commenter wondered if such moments of empty stations even exist in Tokyo, while another suggested using LED lights on platforms to indicate crowd status, similar to traffic signals. Despite the skepticism, Tokyo Metro has spent years learning where its passengers stand and is now experimenting with changing their minds.