If you think this is busy, you're wrong. This particular stretch of bike lane gets over 30,000 bikes between 06:00 and 24:00 every weekday.
Often at this intersection you get a hundred or so bikes waiting for the light. So many that the light turns red before you get a chance to continue on.
It's one of the busiest stretches in Copenhagen. So much so that they have incorporated a "Green Wave" system - meaning that if you ride at a steady pace the whole way you'll hit green lights all the way into the city centre. Just for bikes.
I believe it may be about 20 km/h.