I've seen a number of videos on Youtube about cycling in Berlin and have some concerns. First, they paint "bike lanes" on fairly broad sidewalks and consider this satisfactory but not in my opinion. I was thinking the infrastructure would be similar to Amsterdam but was mistaken.
While Berlin has more "Painted" bike lanes than most cities, you can clearly see all the issues they have on my video. Overall, it needs improvement and more separated bike paths with wider lanes. The cross street do not protect the cyclist who can be struck by turning vehicles. Berlin also need traffic calming because the cars were going too fast.