Odense city (3rd largest Danish city) ran a project from 1999-2002 to improve the cycling infrastructure. The result was good (35 million new bicycle trips in the period of the project -pop. 150,000). One of the more forward thinking (and cheap) ideas was the set up of 6 speedometers so that cyclists can measure their speed in the most congested part of Odense city. The purpose of the speedometers is that the cyclists can adjust their speed to the "green wave" (22 km/h). It is called the green wave when bikes don’t have to stop at a red light (instead bikes flow through green lights). An extra advantage was that injuries went down as bike/auto accidents in the city often happen when the cyclist starts again after a stop. By regulating traffic lights based on bikes not cars, driving also got less appealing...