Musical road

A musical road is a road, or section of a road, which when driven over causes a tactile vibration and audible rumbling that can be felt through the wheels and body of the vehicle. This rumbling is heard within the car as well as the surrounding area, in the form of a melody. Musical roads are known to exist in Saudi Arabia, Hungary, Japan, South Korea, Spain, India, the United States, China, Iran, Taiwan, Indonesia, the United Arab Emirates, Argentina, Belarus, Russia and Turkey. In the past, they could be found in France, Denmark and the Netherlands as well. Each note is produced by varying the spacing of strips in, or on, the road. For example, an E note requires a frequency of around 330 vibrations a second. Therefore, strips 2.4 in (61 mm) apart will produce an E note in a vehicle travelling at 45 mph (72 km/h).