The Nhon – Hanoi Station metro line is part of the Hanoi urban railway development project, with a total length of 57.3 km. The line will be expanded with additional eight-km underground part running from Tran Hung Dao street to Hoang Mai district. The eight-km elevated section, running from Nhon to Cau Giay, helps ease congestion for the capital city. The underground part, stretching from Kim Ma street to the front of Hanoi Railway Station with four underground stations and one underground ramp, will be operated in the end of 2027. Between 2024 and 2030, Hanoi plans to construct 96.8km of metro lines, with an investment of 14.6 billion USD. The following five years will see an additional 301km built, at an estimated cost of 22.5 billion USD./.