4Silence

Traffic noise is inconvenient and potentially damaging
4Silence stands for reducing noise pollution by traffic. Sustainable noise reduction, innovative solutions, scientifically founded, proven results. The WHIS®stone is the first, but certainly not the last innovation that we have developed.

Different scientific studies show that noise pollution caused by traffic is not only inconvenient. When people experience higher levels of stress or sleep badly due to the pollution, it is even damaging.