JR Hokkaido to increase maximum speed of Hokkaido Shinkansen HSR extension May 21, 2019 | Asia Pacific News Hokkaido Railway Company (JR Hokkaido) has announced plans to increase the maximum speed of the Shin–Hakodate–Hokuto–Sapporo extension of the Hokkaido Shinkansen from 260km/hr to 320... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password