The air quality in the suburbs of Paris, Lyon, Marseille, Lille, Toulouse, Rennes and Rouen is 7 meters below sea level or in the underground networks. Air pollution caused by excessive particles hanging in the air. In response to a joint request from the Ministries of Health և Environment և to assist the authorities in 2019, ANSES (National Food Safety Agency) offers pollution indicators specific to each transport network.
“The concentration of small particles in the stations is on average 3 times higher than the concentration of outside air. It can reach even 6 times higher peaks, especially when the train enters the station, it will again stop the particles accumulated on the ground in the air. That is the weight of the past. “, explains Eric Vial, Director of Risk Assessment at ANSES. Older subways, such as the Paris, London, Rome, or New York subways, are more polluted than
Source: Le Figaro
