Difficile de quantifier l'amélioration de la qualité de l'air à Londres après la mise en place de la Congestion Charge – rapport du HEI

The study, HEI (Health Effect Institut) Research Report 155, The Impact of the Congestion Charging Scheme on Air Quality in London, was led by Professor Frank Kelly of King’s College London as part of HEI’s research program to measure the possible health outcomes associated with actions taken to improve air quality.

Although the London CCS was designed to improve traffic and not necessarily air quality, early projections had suggested it could improve air quality as well. Kelly and his team used a multifaceted approach to explore the impact of the Congestion Charging Scheme on air quality:

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