The researchers said the introduction of the Lez helped to reduce particulate matter (PM10) in Greater London by 13% between 2008 and 2013, compared to between 2003 and 2007.
Nitrogen dioxide levels had also fallen by 18.4% in 2019 following the launch of Ulez in central London, compared to the period between 2016 and 2018, according to the analysis.
More evidence that low emissions zones work!
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