In (almost) all of the action plans for air pollution, which had to be worked out by the cantons for the attention of the federal government must be decrease of  speed limits in urban areas. Research in this area show serious shortcomings, because it was based solely on test experiments.

The TCS has a mobile gas-measuring system (MAMA), consisting of a VW Golf as a carrier vehicle, a built in analyser and also built-in computer, which processes the signals. Thus measurements of consumption and emissions are possible directly in the traffic. This system has proven its accuracy and suitability for comparative measurements with a stationary CVS (Constant Volume Sampling).