How Low Emission Zones can improve Sofia air quality: new TRUE report
Low Emission Zones (LEZs) could have a significant impact on air pollution in Sofia, according to new analysis conducted by TRUE partner the ICCT for the Clean Air Fund. The study, ‘Low-emission zone in Sofia: Projected NOx and PM emissions benefits,’ highlighted that Euro 4 standard diesel cars and older are responsible for 56% of total nitrogen oxide (NOx) emissions and 85% of total fine particulate (PM) emissions in the city.