Where does the 67 billion USD North-South railway with a speed of 350 km/h pass through?

According to the draft proposal of the Government, the speed of 250 km/h was developed 50 years ago and is currently only suitable for short and medium routes. As for the North-South corridor, which is more than 1,500 km long and connects many large cities, the speed of 350 km/h will help attract more passengers. World experience shows that choosing a speed of 350 km/h not only helps shorten travel time, but also has the ability to attract about 12.5% ​​more passengers than the speed of 250 km/h.

Thanhnien.vn

Source: https://thanhnien.vn/bat-ngo-gia-ve-duong-sat-toc-do-cao-bac-nam-co-re-hon-may-bay-185241001111102679.htm