13Aug2025
Latest News & Report / Vietnam Briefing
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The urgent need for a transport revolution
Over the past several years, air quality in major urban centers such as Hanoi and Ho Chi Minh City has consistently remained at alarming levels. Data from 2022 to March 2025 indicates that the Air Quality Index (AQI) in both cities frequently exceeds the safe threshold recommended by the World Health Organization (below 100), especially during peak traffic seasons and dry weather periods [1]. Air pollution not only poses direct threats to public health but also stands as a major factor contributing to the significant decline in urban quality of life.
AQI records in Hanoi from 2023 to 2025

Source: B&Company Airdata 360
Air pollution in major cities largely stems from the overwhelming number of private vehicles, leading to chronic congestion, fuel waste, and the emission of harmful pollutants. In this context, the development of sustainable public transportation—especially metro systems—has become an urgent necessity. With high passenger capacity, electric operation, and zero direct emissions, metro systems help ease traffic pressure, improve air quality, reduce noise pollution, and reclaim urban space for public use. At the same time, they offer faster, more predictable travel, contributing significantly to the overall quality of urban life.
The current state of Metro development
The growing ambitions of both Hanoi and Ho Chi Minh City—seen through their expanding metro plans and faster project timelines—are not just a coincidence. They reflect a clear national consensus: building a full metro network is no longer a choice, but a must, to keep cities livable and competitive. Rapid urbanization has brought serious problems like traffic jams and pollution, putting pressure on the government to act. This urgency has pushed leaders to introduce special policies and explore bold solutions such as Transit-Oriented Development (TOD)- things that might not have been possible under normal conditions. In this way, ambition itself has become a driver for new policies.
Overview of Metro Plans in Hanoi and Ho Chi Minh City
| Item | Hanoi | Ho Chi Minh City |
| Lines in operation | · Line 2A (Cat Linh – Ha Dong, 13.1 km) – China contractor Line 3 (elevated section: Nhon – Hanoi Station, 8.5 km) – Korea and Italy Joint venture contractor |
· Line 1 (Ben Thanh – Suoi Tien, 19.7 km) – Japan and Vietnam Joint Venture contractor |
| Lines starting soon | · Line 2 (Nam Thang Long – Tran Hung Dao) – Japan contractor Line 5 (Van Cao – Hoa Lac), expected to start by the end of 2025 |
· Line 2 (Ben Thanh – Tham Luong), expected to start by the end of 2025 |
| Long-term vision | 14–15 lines, over 600 km total, by 2065 | 12 lines, about 510 km total, by 2060 |
| 2035 target | ~400 km of the metro completed | 6–7 lines completed, totaling 183–355 km |
| Estimated total investment | Around USD 55.4 billion (by 2045) | Around USD 35 billion (by 2035); total projected over USD 40 billion |
| Managing agency | Hanoi Metropolitan Railway Management Board (MRB) | Ho Chi Minh City Urban Railway Management Board (MAUR) |
Source: B&Company compilation