“Our action plan is ambitious, we are pioneers in this area compared to all networks, and our level is lower than that of other networks,” defends Sophie Mazuet, responsible for the sustainability of the RATP group. Questioning the reliability of the Vert de rage study on fine particle air pollution in the subway – “The approach is interesting, but we need to make sure that the devices are reference and the scientific protocol is followed”, lists the measures taken.
And above all, the five “continuous monitoring stations” installed at Aubert (RER A), Chatelet (line 4), Franklin-Roosevelt (line 1), Nation (RER A) and Chatelet-les-Alles (RER A): “The data is available on our website and we supplement it with other specific measurements. So we have a global vision for the network,” says Sophie Mazue.
Since 2020, RATP has also been experimenting with a device to trap particles at their source with brake lining supplier Wabtec. “Three RER A trains are already equipped with it, and seven more should be equipped before the end of the year,” the manager emphasizes, also explaining that Régie is working to “reduce particle emissions as much as possible” through braking.” electric” on lines 2, 5, 9 and 14. Lines that are, however, among the most polluted according to the Vert de rage survey.
The air filtering system was tested in 2019 with Suez but needs to be fine-tuned because it is currently “too bulky and noisy”. “At last we are creating or strengthening the ventilation system,” continues RATP.
“There is no perfect solution”
Île-de-France Mobilités, the body that organizes transport in the region under the auspices of Valerie Pecresse, is funding 57.3 million euros to equip or upgrade around forty ventilators by 2024 for the RATP. Or 10% of the existing park for sites such as Gare de Lyon, Nation, Charles de Gaulle Étoile, Aubert, Jaurès and Stalingrad. “Emissions of particles are reduced by 30% each time,” says Sophie Mazue.
Regarding criticism of the lack of transparency or action against air pollution, the RATP defends itself: “We already communicate very broadly and are hyper-dynamic. But there is no miracle solution. Improving air quality will require a lot of experimentation. All this takes time. »
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