I can answer for Berlin: 1. Depends on where. In busy areas it happens a lot. You just have to be careful when there are people around. 2. The bike lanes have

I can answer for Berlin: 1. Depends on where. In busy areas it happens a lot. You just have to be careful when there are people around. 2. The bike lanes have their own traffic lights, which are on the same cycle as the cross walks to the right of them, and the main road/lights to the left. 3. It's obvious since these bike lanes are everywhere; it's just apart of driving. I will say it's a little worse in the West of the city though!