The 500 series is a Shinkansen high-speed train type operated by West Japan Railway Company (JR-West) on the Tōkaidō Shinkansen and San'yō Shinkansen lines in Japan since 1997. They were designed to be capable of 320 km/h (200 mph) but operated at 300 km/h (185 mph), until they were finally retired from the primary Nozomi service in 2010.