|Class E956 "ALFA-X"|
An artist's impression of the new train showing the two different nose end styles
|Number under construction||1 set (10 vehicles)|
|Maximum speed||400 km/h (250 mph) (nominal)|
|Electric system(s)||25 kV AC, 50 Hz|
|Current collection method||Overhead catenary|
|Track gauge||1,435 mm (4 ft 8 1⁄2 in)|
The Class E956 (E956形), branded "ALFA-X" is a ten-car experimental Shinkansen train on order by East Japan Railway Company (JR East) in Japan to test technology to be incorporated into future shinkansen trains operating in service at speeds of up to 360 km/h (225 mph). The name is an acronym for "Advanced Labs for Frontline Activity in rail eXperimentation".
The experimental trainset is intended to be tested at speeds of up to around 400 km/h (250 mph) to evaluate new technologies to be incorporated into new trains to operate in revenue service at speeds of up to 360 km/h (225 mph). It will test new technologies including dampers to reduce vibration and reduce the likelihood of derailment in major earthquakes. It will also test body designs that reduce snow adherence in wintry conditions.
The E956 train will evaluate two different end car nose profiles.
- "JR East to build ALFA-X 360 km/h Shinkansen testbed". Railway Gazette. 7 July 2017. Archived from the original on 18 July 2017. Retrieved 19 July 2017.
- Kusamachi, Yoshikazu (4 July 2017). JR東日本の新幹線試験車「ALFA-X」2019年春完成…「営業360km/h」を検証へ [New "ALFA-X" JR East experimental shinkansen train to be completed in spring 2019 - to test operations at 360 km/h]. Response (in Japanese). Japan: IID Inc. Archived from the original on 18 July 2017. Retrieved 19 July 2017.
- JR East 2017 news release (in Japanese)
- Yamanashi Test track is a part of this route
- Demostrating operation since 2020
- some sections exist today as Keisei Skyliner