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HEI study finds London Congestion Charging Scheme shows little evidence of improving air quality

Green Car Congress

The London Congestion Charging Scheme (CCS)—which charged for travel into central London and reduced traffic volume ( earlier post )—has shown little evidence that it improved air quality as well, according to Part I of a new study published by the Health Effects Institute (HEI).

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HALO research aircraft measuring the emissions of megacities in EmeRGe project

Green Car Congress

This scenario is particularly relevant in Asia, home to the world’s largest concentration of megacities. The transport and transformation of plumes from selected European and Asian major population centers (MPCs) will now be investigated with special focus on the rate of formation of ozone and aerosols. —Joohn Burrows.

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