Sophistication of Noise Measurement Regulations for Powered Vehicles in the EU 972015

The acceleration process on which the noise measuring method for the homologation test is based yields extremely high acceleration values associated with enhanced tyre-road noise contributions, which are not mirrored under real driving conditions. Measures taken by tyre manufacturers to reduce tyre-road noise in these atypical operating modes do not necessarily lead to a reduction of tyre-road noise in real traffic.
The German Federal Environmental Agency (UBA) has commissioned extensive studies of driving behaviour in cars and commercial vehicles under real traffic conditions in order to evolve a concept for an improved noise measuring method, whose guiding principles and structure are presented


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