In a number of developed countries, there are so-called “music” roads. These are sections of the route with grooves of different depths, located (across the direction of the road) at a certain distance from each other. Traffic creates different frequencies. The alternation of these frequencies “creates” a melody that is accessible to the human ear.
The sound of the melody is directly determined by the speed. The highway is designed in such a way that the musical composition is heard only by the driver whose vehicle is moving at the designated speed. Continue reading