TWR 71-000 series
Japanese electric multiple unit train type
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The Tokyo Waterfront Area Rapid Transit 71‑000 series (東京臨海高速鉄道71‑000形) is an electric multiple unit (EMU) commuter train type operated by the third-sector railway operator Tokyo Waterfront Area Rapid Transit (TWR) 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.[5]
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| Tokyo Waterfront Area Rapid Transit 71-000 series | |
|---|---|
A 71-000 series set in December 2025 | |
| In service | 2025–present |
| Manufacturer | J-TREC |
| Family name | Sustina S24 Series |
| Replaced | 70-000 series |
| Entered service | 1 October 2025 |
| Number under construction | 60 vehicles (6 sets) |
| Number built | 20 vehicles (2 sets) |
| Formation | 10 cars per trainset |
| Fleet numbers | Z11–[1] |
| Capacity | 1544 (486 seated) |
| Operator | Tokyo Waterfront Area Rapid Transit |
| Depot | Yashio |
| Lines served | |
| Specifications | |
| Car body construction | Stainless steel |
| Car length | 20,000 mm (65 ft 7 in) |
| Width | 2,998 mm (9 ft 10.0 in) |
| Height | 4,016.5 mm (13 ft 2.13 in) |
| Floor height | 1,130 mm (3 ft 8 in) |
| Doors | 4 pairs per side |
| Maximum speed |
|
| Traction system | IGBT–VVVF[2] |
| Traction motors | Three-phase induction motor |
| Power output | 140 kW (190 hp) |
| Acceleration | 2.5 km/(h⋅s) (1.6 mph/s) |
| Deceleration | 5 km/(h⋅s) (3.1 mph/s) |
| Electric systems | 1,500 V DC (overhead catenary) |
| Current collection | Pantograph |
| Bogies |
|
| Braking system | Regenerative brake |
| Safety systems | ATS-P, ATC |
| Track gauge | 1,067 mm (3 ft 6 in) |
| Notes/references | |
| Specifications:[3][4] | |
Design
Based on the JR East E233 series design, the 71‑000 series is built by Japan Transport Engineering Company (J-TREC) as part of its "Sustina S24 Series" family of 20-meter-long four-door cars.[4] The type uses a wide-body design to reduce congestion.[6]
Formation
Sets are based at Yashio Depot and are formed as follows with six motored ("M") cars and four non-powered trailer ("T") cars.[3]
← Shin-Kiba Ōsaki, Ōmiya, Kawagoe → | ||||||||||
| Car No. | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|
| Designation | Tc | M1 | M1' | T2 | M3 | M3' | T1 | M2 | M2' | Tc' |
| Numbering | 71-x10 | 71-x09 | 71-x08 | 71-x07 | 71-x06 | 71-x05 | 71-x04 | 71-x03 | 71-x02 | 71-x01 |
| Weight (t) | 31.1 | 32.3 | 33.1 | 29.1 | 32.2 | 30.2 | 29.4[b] | 32.9 | 33.1 | 31.3 |
| Capacity (total/seated) | 140/39 | 158/51 | 158/51 | 158/51 | 158/51 | 158/51 | 158/51 | 158/51 | 158/51 | 140/39 |
Interior
Passenger accommodation consists of longitudinal seating throughout.[2]
Interior view in October 2025
Wheelchair space and priority seating in October 2025
LCD passenger information displays in October 2025
History
Details of the trains were announced by TWR in November 2023.[5] A total of eight 10-car sets are due to be in service by fiscal 2027.[7][8]
The first train was delivered from the J-TREC plant in Niitsu in November 2024.[9][10] Set Z12 followed suit in June 2025.[11]
The 71-000 series fleet entered service on the Rinkai, Saikyō and Kawagoe lines from 1 October 2025.[2]
