The cost advantage of diesel has caused the number of newly registered diesel cars to sky-rocket over the last twenty years. Scientists have now calculated the exact effects of this “diesel boom”: In a new study published in the journal “Atmospheric Environment” they show that the diesel boom in Europe has failed to benefit the climate.
Due to excessive air pollution, in July 2017 the City of Potsdam reallocated space on the very busy Zeppelinstraße in an attempt to reduce car traffic and encourage people to walk, cycle and use public transport. While they welcome the fact that this measure has made cycling safer, participants in an online survey conducted by the IASS are critical of other effects, claiming that life has become more difficult for commuters, and air and noise pollution have only been reduced in a small area – to the detriment of side streets.
Diesel cars are the main source of nitrogen oxide (NOx) emissions in urban areas, an increasingly pressing problem that some German cities are seeking to solve by imposing diesel bans. But that won’t be enough. A new IASS Policy Brief makes recommendations to policymakers on how to deal with diesel emissions.
Last week in Germany, retired pulmonary physician Dieter Köhler made waves by publishing a statement, signed by over one hundred other fellow lung doctors, calling into question the science behind air quality standards and suggesting that current EU-wide limits for nitrogen oxides and fine particulate matter are unnecessarily strict. Not coincidentally, this comes at a time when diesel driving bans are being imposed in many German cities because of their inability to meet the EU-wide limit value for nitrogen dioxide (NO2), for which diesel cars are the main source. This has sparked debate on many levels, from the journalistic to the political. In this blog post we specifically address the topic of air quality limit values based on our expertise in the fields of air quality and public health.