The third metro route is 26 kilometer long, connecting Troi, Nhon area, Hanoi railway station and Hoang Mai district together.
The first phase of the project in Nhon-Hanoi station has started construction since 2010, expected to complete in 2021.
The second phase will continue building Hanoi station-Hoang Mai stretch over eight kilometers with seven stations through Hoan Kiem, Hai Ba Trung and Hoang Mai districts.
Investment capital is expected to total US$1.22 billion.
After completion, the third metro line will change urban traffic in Hanoi and contribute in reducing travel time, cost and vehicle exhaust emissions.
