
TOKYO -- The newest shinkansen bullet train from Japanese rail operator JR East begins test operation Friday, with its top speed expected to exceed the fastest now in service by at least 40 kph.
Green stripes grace the Alfa-X's bluish-silver body, featuring a 22-meter nose on the front car -- the longest for a shinkansen. JR East, formally East Japan Railway, previewed the full 250-meter, 10-car version for the media Thursday at a Miyagi Prefecture facility.