The national legislative body is reviewing the third draft of the Air Pollution Control Law, which tightens controls on emissions from vehicles and vessels and is expected to be passed this week.

If severe air pollution covers a city, the government will usually issue emergency measures including restricting the use of vehicles to reduce car emissions, which has been a common practice adopted in many cities like Beijing.

In the first and second drafts of the law on air pollution control, there were stipulations that local governments had the right to impose restrictions on vehicle use due to severe air pollution, and release the details of the restrictions including the zones affected after hearing suggestions from experts and the public.