Low emissions zones have proved unpopular in parts of europe. why

Low-emission zones are unpopular in Europe because they limit the use of means of transport suitable for Europeans.

Explanation:

Low emission zones (LEZs) are areas where the most polluting vehicles are regulated. This generally means that vehicles with higher emissions cannot enter the area. In some low-emission zones, the most polluting vehicles have to pay more if they enter the low-emission zone.

Low-emission zones are often the most effective measure cities can take to improve air pollution. Low emission zones reduce emissions of fine particles, nitrogen dioxide and (indirectly) ozone. These are the top three air pollutants of concern in Europe.

Although they are beneficial, low-emission zones are unpopular with Europeans, because they limit their own transport options.