The Tokyo Metropolitan Government has proposed building two new subway lines from central Tokyo, one to Shinagawa and the other to the waterfront districts of Harumi, Toyosu and Ariake.
The plan — affecting two areas that are already earmarked for major development projects — is part of a blueprint for Tokyo's future traffic network, which the metropolitan government will submit to the transport ministry's policy council later this month.
If the central government gives its approval, the plan will be included in the ministry's policy for railway construction to be compiled by next March.