The Green Wave in Copenhagen is in place on routes with high levels of bicycle traffic. If you cycle at 20 km/h the lights are timed so that you'll hit green all the way into the city centre.
I rode a section of it one morning and then filmed the rush hour bicycle traffic.
35,000 bikes use this stretch each day.
Music: Ibens - Jeg savner min blå cykel [i miss my blue, blue bicycle] and Tue West - Sæt dig bag på min cykel [Sit on the back of my bike - and enjoy it]