The slow pace of transportation area expansion compared to the growing number of vehicles has led to overloaded urban infrastructure, traffic congestion, and air pollution.
In the context of aggressive urbanization in Hanoi and increasing greenhouse effect, lakes surrounded by trees are like green "lungs" in the capital city.
With rapid urbanization and growing population, Hanoi is under pressure to address social issues, especially those related to environment and traffic, said the Hanoi Party chief.