|In service||2024 (planned)|
|Number under construction||119 vehicles (17 sets)|
|Formation||7 cars per trainset|
|Capacity||355 (26 Green + 329 standard)|
|Line(s) served||Tohoku Shinkansen, Yamagata Shinkansen|
|Doors||1 per side|
|Maximum speed||300 km/h (186 mph) (Tohoku Shinkansen), 130 km/h (81 mph) (Yamagata Shinkansen)|
|Electric system(s)||20/25 kV AC, 50 Hz overhead catenary|
|Current collection method||Pantograph|
|Multiple working||E5 series (planned)|
|Track gauge||1,435 mm (4 ft 8 1⁄2 in) standard gauge|
The E8 series (E8系) is a Japanese Shinkansen high-speed train type on order for Tsubasa services announced on 3 March 2020. It is intended to replace the E3 series, raising the top speed of the service from 275 km/h (171 mph) to 300 km/h (186 mph). It is designed by Ken Okuyama, in cooperation with Kawasaki Heavy Industries.
The train is scheduled to enter service in 2024.
The train was designed to invoke the richness of the landscape of the Yamagata region, and the "weaving together of nature and people". The exterior colouring is unchanged from the reliveried E3 series, also designed by Ken Okuyama. White, evoking the snow of Mount Zaō, deep purple inspired by the Mandarin duck, the prefectural bird for Yamagata Prefecture, together with yellow and red for the safflower, the prefectural flower of Yamagata Prefecture.
All cars are equipped with full active suspension.
The E8 uses the same 5M2T-formation as the E3 and E6 series mini-shinkansen, meaning that it consists of 5 powered (motor), and 2 non-powered (trailer) cars.
The 7-car trains have two service classes: ordinary cars and Green cars, with a seating capacity of 355. This is 39 fewer seats than the E3 series trains it replaces. Both seating configurations are 2+2 abreast, but presumably differ in seat pitch, as is the case for all other Shinkansen trains. AC power outlets are available in both classes. Both the cabins and vestibules are equipped with security cameras. The green car has room for one wheelchair user, while each ordinary car has room for 2. All 7 cars are equipped to handle large luggage.
The colour scheme of the green car seating is inspired by the blue waters of the Mogami River, combined with the lush greenery covering Mount Gassan. The ordinary car seating draws inspiration from the traditional process of extracting the colour of the safflower, which is why the colour gradually becomes less saturated moving from the seat cushion to the headrest. The center aisle carpet was designed based on the image of the safflower, represented by the seats, reflecting on the waters of the Mogami River as it flows between them.
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