The idea was to play the Frisian national anthem along the N357 near Jelsum in Friesland, the Netherlands. If a car drove along the road there at the permitted speed, the motorist would hear the tune at the correct speed as a reward. It was a playful action to improve traffic safety.

Special road humps were placed to measure the speed and when it reached 60 kilometres per hour, the Frisian National Anthem was played at the correct speed.

The local residents were not happy with the music playing on the road. In contrast to the road users, they heard "a jumble of all kinds of noises", or noise. Besides noise pollution, the experiment was also not exactly conducive to traffic safety: people started driving twice as fast to see if the music was played twice as loud. There were also drivers who thought it necessary to investigate the effect of driving backwards on the special road humps. Until the road returns to normal, noise is kept to a minimum. During the nights, the road with the ridges is even closed off completely.