![London's ULEZ expansion starts today: Which cars no are longer compliant and why is it unpopular with some?](https://cdn.newsserve.net/en/knowledge/London_20190127.jpg)
London's ULEZ expansion starts today: Which cars no are longer compliant and why is it unpopular with some?
The Ultra Low Emission Zone - more commonly known as ULEZ - aims to reduce air pollution in London and other big cities by charging heavy polluting vehicles to drive on central roads.
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