This is one of 8 metro projects approved by the Prime Minister to improve the city's public transportation system and ease traffic congestion in the capital, home to 7.5 million people.

Metro line No. 5 will connect downtown Ba Dinh district and the suburban area of Hoa Lac in Thach That district, home to Hoa Lac Hi-tech Park. Construction on the metro line is scheduled to start in 2022, and the line be put into operation in 2026.

Hanoi plans to build eight urban railway lines with a combined length of more than 300 km, including three monorail segments, to reduce frequent traffic congestion.