Headline: Tackling Urban Air Pollution: Nitrogen Oxides and Diesel Emissions

Ambient NO2 concentration limit values are exceeded at more than half of all traffic monitoring sites in Germany. Since diesel passenger vehicles are the primary cause of these exceedances, measures that target these vehicles are the best way to bring German cities quickly into compliance. These measures should apply to entire urban areas, not just hotspots, and they should be based on real-world emissions.