The Ultra Low Emission Zone (Ulez) expansion in August 2023 has led to a significant decrease in air pollution across London, with nitrogen dioxide levels down 27%. The initiative, aimed at reducing emissions from vehicles not complying with set standards, has seen improvements in air quality at 99% of monitoring sites. The program has faced criticism from opponents who argue the benefits were overstated, but data indicates an 80% reduction in illegal pollution levels for residents near busy roads, supporting the effectiveness of the Ulez approach.
Pollution in London has decreased after the expansion of the Ultra Low Emission Zone, with nitrogen dioxide levels down by 27%, according to City Hall.
The controversial Ulez expansion in August 2023 led to significant improvements in air quality, with monitoring sites showing 99% reduction in harmful pollution levels.
Despite criticism from some London Assembly members, the mayor highlighted the positive outcomes of Ulez, citing a 96.7% compliance rate among vehicles subject to emission standards.
The study noted a dramatic 80% reduction in illegal pollution levels for residents near busy roads, validating the necessity and effectiveness of the Ulez scheme.
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