The Green Wave in Copenhagen is a bicycle highway system currently in use in places with high levels of cycling traffic in Copenhagen. The Green Wave was first implemented on Nørrebrogade, and it has regulated traffic signals for cyclists. The traffic lights are coordinated to allow continuous traffic flow over many intersections in one direction. This system enables cyclist traveling at 20km/h to not be stopped by traffic lights. The green wave reverses direction during rush hour. This way, cyclists can ride the green wave on the way to work, and then again on the way home. The width of the lanes is over five meters wide in order to accommodate the 38,000 cyclists that ride on the stretch daily. The Green wave has been such a large success that it has now been extended on Østerbrogade (18,000 cyclists daily), and Amagerbrogade (17,000 cyclists daily).