Traffic noise is the second most important environmental problem in Europe. After air pollution, noise is the second environmental killer that endangers health. It is not enough to control noise pollution by law alone. A new study shows how the negative health effects of noise can be reduced. Few people know that cars today make more noise than they did 40 years ago. Heavy vehicles, however, are less noisy than they used to be. The number of people exposed to noise pollution is high. Traffic noise has been correlated with stress-related health problems, such as stroke and heart disease. There is no solution that can solve traffic noise, either by controlling the source of the noise or by stopping it from reaching the ear. To improve the situation, everyone needs to take action, but such cooperation is currently scarce. The associated responsibilities are also unclear. This report points out that for densely populated cities, there are necessary measures that can be taken, which are often consistent with measures to prevent climate change and therefore have a double benefit, such as: procuring quieter means of transportation, reducing speeds, and making buildings effectively soundproofed through good urban planning. The report also points out that the first step is a political call for a community-wide effort to improve noise pollution.