Manhattan congestion pricing shows limited impact on air quality

A year after implementing congestion pricing in Manhattan, a city health report found no significant impact on overall air quality, though it confirmed that pollution levels did not worsen in affected neighborhoods. The study evaluated pollutants such as PM 2.5, nitrogen dioxide, nitric oxide, and black carbon, using data from before and after tolling began. Despite reductions in traffic volume and increased vehicle speeds, no statistically significant changes in pollution levels were observed, suggesting that congestion pricing's effect on air quality may be limited.

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