The degree of exposure for nearby residents varies depending on the weather conditions.
A European research project under the name of ALPNAP comes to a conclusion that helps to minimise noise and air pollution along main alpine traffic routes. The project was led by the German Aerospace Center’s (DLR) Institute for Atmospheric Physics.
In the project, part of the DLR traffic programme, the Institute of Atmospheric Physics applied various processes to forecast traffic noise. In addition, the scientists also carried out combined analyses concerning the degree to which noise and the concentration of air pollutants in Unterinn Valley is dependent on the weather. It emerged that noise protection walls alongside autobahns in valleys only protect cliff-side residents to a limited degree and therefore the construction of such walls must be thoroughly checked. It was also demonstrated that certain weather conditions in the valleys amplify the impact of noise and pollution and cause limit values to be exceeded. Using these findings as a base, traffic management measures can now be undertaken according to the respective weather conditions, and peaks in pollution can be prevented.