Japanese railway company starts testing 249mph bullet train speeds

Enlarge / JR East unveils to the media its new test bullet train "ALFA-X" in Rifu, Miyagi prefecture on May 9, 2019. (credit: JIJI PRESS/AFP/Getty Images)

This week, Japanese railway company JR East showed off its new Alfa-X, a high-speed bullet train that is designed to achieve a top speed of 400kph, or 249mph, which would make it the fastest commercial train in the world. In day-to-day operations, the train would shuttle passengers at 360kph, or roughly 224mph.

On Friday, JR East will begin testing the Alfa-X, without passengers, on its railways. According to Bloomberg, the 10-car train will make the trip "between the cities of Aomori and Sendai at night" for the next three years during a testing phase. JR East hopes to use the Alfa-X commercially by 2030. Japan News says the line will eventually be extended to Sapporo.

That long lead time suggests that there might be an opening for another high-speed bullet train option to overtake the Alfa-X Shinkansen train in speed for commercial railway service.

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