Actions to improve the air quality within the city center in Germany

In Germany, many cities are considering actions to improve the air quality within the city center, in particular to reduce particulate matter (PM) pollution. As an external expert you are asked by the city manager of Heilbronn (125,000 inhabitants, located in the “Neckartal”) to compile a scientific assessment, addressing technical, economic and social aspects that can serve as a basis of discussion for the city’s environmental-investment-program.