Metropolis of Lyon | Environment. Peripheral: Has speed and pollution dropped?

A report from the air quality observatory Atmo analyzed the speed reduction to 70 km / h on the Lyon ring road since April 29, 2019. If nitrogen dioxide pollution has decreased between 2018 and 2019, no the causal link is established. For PM10 fine particles, they even increased slightly. Explanations

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