Major environmental issues such as household waste, urban wastewater, traditional industrial solid waste, industrial clusters, and handicraft villages continue to develop in a complex manner, At the same time, other major environmental issues such as air pollution in large cities are posing significant challenges to environmental protection work from 2018 to the coming years. The increase in personal transportation, Especially the main transportation arteries, coupled with high traffic density during peak hours and construction projects, have caused serious air pollution in major cities such as Hanoi and Ho Chi Minh City on certain days and times.<br>In the first district, HCMC piloted public bicycles at 43 stations, with 500 cars running 24/24. Most car renters are young people. After more than 9 months of pilot testing in HCMC, the public bicycle model has gained popularity among citizens and
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