Metropolis Lyon | Surroundings. Periphery: the speed has decreased and the pollution?

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In a report by the Atmo Air Quality Observatory, the speed reduction on the Lyons ring road since April 29, 2019 to 70 km / h was analyzed. If the nitrogen dioxide pollution actually decreased between 2018 and 2019, the causal link is not established. In the case of fine PM10 particles, they even increased slightly. Explanations

By Jean-Philippe CAVAILLEZ - 06:00 - Reading time: