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.
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A few cities, notably London, have dramatically reduced the traffic congestion and improved the air quality by restricting when people can drive their cars into the inner city. So some people have proposed that this be extended to a global policy: there will be days where driving a private car is prohibited. Personally, I disagree with this; there are far more effective remedies which can b