The main idea of the Environmental Traffic Management in Potsdam is to reduce peak pollutant concentrations by temporarily activating measures to influence the traffic during episodes of high concentration levels. IMMISmt, a software product of IVU Umwelt is used in Potsdam as an extension to the traffic management system to determine current concentrations in hot spots in near real-time, thus leading to an optimised environmental traffic management. If defined pollution levels are reached, IMMISmt can issue warnings or initiate traffic control measures. The effect of the applied control measures on the entire road network can subsequently be monitored with IMMISmt.
Potsdam, the capital city of the German federal state of Brandenburg, is part of the Berlin/Brandenburg Metropolitan Region. Since April 2012 the Environmental Traffic Management is in operation. The aim of this operational system, which is currently unique in Germany, is to improve air quality and reduce exceedances of PM10- and NO2-limit values in Potsdam.