The study looked at how air pollution from traffic in a Central European city can affect children's asthma. They used a model to estimate pollution levels in different parts of the city and found that the urban landscape and where children live can impact how much pollution they are exposed to. Areas with more traffic had higher levels of pollutants like PM10 and NO2, which are linked to asthma. This shows that the quality of the city's environment can affect people's health, especially children living in areas with heavy traffic.