Stock Photo - 11 February 2020, North Rhine-Westphalia, Hagen: Vehicles wait in front of a traffic light at the Märkischer Ring (Bundesstraße 54) in Hagen. In the canyon of houses behind it, the nitrogen dioxide values are measured. In order to prevent impending driving bans on older diesel vehicles in Wuppertal and Hagen, the state of North Rhine-Westphalia and the German Environmental Aid (DUH) will meet on Tuesday for mediation talks. The Higher Administrative Court (OVG) in Münster mediates between the parties to the dispute. Photo: David Inderlied/dpa. - Hagen/North Rhine-Westphalia/Germany

Stock Photo: 11 February 2020, North Rhine-Westphalia, Hagen: Vehicles wait in front of a traffic light at the Märkischer Ring (Bundesstraße 54) in Hagen.

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