Some people think international car-free days are an effective way of reducing air pollution, others think there are some other ways. Discuss both views and give your own opinion.

While international car-free days are thought to effectively reduce the level of air pollution, some other people believe some alternatives are also effective. In my view, those measures are all effective in addressing the problem of air pollution, but only to a certain extent.
On the one hand, indeed, exhaust fumes from cars are majorly responsible for polluting the air since they contain a relatively high proportion of pollutants such as CO2. Having some days without cars on the road or no harmful smoke will be released into the atmosphere, therefore, improve air quality. This policy is extremely effective in big cities around the world. Since this car-free policy was strictly enforced, the air quality of the city has greatly improved.
On the other hand, local governments should encourage the use of public transport like subways because it produces a smaller quantity of pollutants and is less likely to damage the air. Also, the disposal of waste, especially plastic waste that emits toxic fumes if burned carelessly, at landfills should be closely monitored. The final and the most effective way is to use sustainable and environmentally friendly energy sources, for example, solar or wind power, to replace fossil fuels in the long term.
In conclusion, it is obvious that the organisation of world car-free days may produce little effect on protecting the atmosphere. Such a problem needs to be dealt with by different approaches and if there is only one way being implemented, it will not be enough.