An alert to air pollution with fine particles was triggered on Wednesday March 3 and for two days in three departments of the South-West, the Pyrénées-Atlantiques, the Landes and the Gironde, announced the prefectures.
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degradation of air quality is mainly due to the contribution of desert dust brought from the Sahara by southerly winds and also comes from human activities such as domestic heating, burning, road traffic or even traffic. 'agriculture
', write the prefectures.
Speed limits are lowered in these departments by 20km / h on all axes where motorists can usually travel at 90km / h or more.
On axes where the speed is normally limited to 80 km / h, it is lowered to 70 km / h.
Any exemptions for the burning of green waste in the open air are suspended and the prefecture recommends using carpooling, stopping chimney fires or reducing dust-generating sites in the industrial sector.