Converting a city to a pedestrian-only area can lead to a decrease in pollution, showcasing a positive externality.
Positive externality of converting the inner part of a city to a pedestrian-only area includes the decrease in pollution in the city. By reducing vehicle use, there would be less air pollution, benefiting not only those who work in the area but also the entire city. This is an example of a positive externality where the benefits spread beyond those directly involved.
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