TWR 71-000 series


The '''Tokyo Waterfront Area Rapid Transit 71 is an electric multiple unit commuter train type operated by the third-sector railway operator Tokyo Waterfront Area Rapid Transit since 2025. A total of eight 10-car sets are to be built to replace the fleet of 70-000 series sets used on the Rinkai Line since its opening in 1996.

Design

The 71000 series is built by Japan Transport Engineering Company as part of its "Sustina S24 Series" family of 20-metre-long four-door cars. The type uses a wide-body design to reduce congestion.

Formation

Sets are based at Yashio Depot and are formed as follows with six motored cars and four non-powered trailer cars.
  • Cars 6 and 9 have one pantograph, and car 3 has two.
  • All cars have a wheelchair space.

Interior

Passenger accommodation consists of longitudinal seating throughout.

History

Details of the trains were announced by TWR in November 2023. A total of eight 10-car sets are due to be in service by fiscal 2027.
The first train was delivered from the J-TREC plant in Niitsu in November 2024. Set Z12 followed suit in June 2025.
The 71-000 series fleet entered service on the Rinkai, Saikyō and Kawagoe lines from 1 October 2025.