The Chuo Shinkansen (中央新幹線, Central Shinkansen) is a Japanese maglev line under construction between Tokyo and Nagoya, with plans for extension to Osaka. Its initial section is between Shinagawa Station in Tokyo and Nagoya Station in Nagoya, with stations in Sagamihara, Kōfu, Iida and Nakatsugawa. Following the completion of the Tokyo–Nagoya line, the line will extend to stations in Mie, Nara and Osaka. The line is expected to connect Tokyo and Nagoya in 40 minutes, and eventually Tokyo and Osaka in 67 minutes, running at a maximum speed of 505 km/h (314 mph). About 90% of the 286-kilometer (178 mi) line to Nagoya will be tunnels.

Government permission to proceed with construction was granted on 27 May 2011. Construction is expected to cost over ¥9 trillion (approximately 82 billion USD) and commenced in 2014. The start date of commercial service is unknown, after Shizuoka Prefecture denied permission for construction work on a portion of the route in June 2020.[1] JR Central originally aimed to begin commercial service between Tokyo and Nagoya in 2027. However, in 2024, Central Japan Railway Co President Shunsuke Niwa said that due to construction delays a 2027 opening was now impossible and it is not expected to open until at least 2034.[3] The Nagoya–Osaka section was planned to be completed as late as 2045, but the date was moved to as early as 2037 following a loan from the Japanese government.[4]

Resolves to the day of commercial operation (Japan time) for ANY length. So if they build 2 stations in the middle of nowhere and start ticket sales essentially for entertainment while they build the rest, that counts. But more realistically, the Nagoya portion alone counts.

Resolves to "project cancelled" if the entity building the line is essentially dissolved. Seems unlikely, will take comments at that point.