Around here, about 80 % of cases where helmet helps are incidents not involving a motor vehicle. I.e. bicyclist collides with another cyclist, a pedestrian, or

Around here, about 80 % of cases where helmet helps are incidents not involving a motor vehicle. I.e. bicyclist collides with another cyclist, a pedestrian, or a stationary object (Earth counts as stationary object here). Using helmet would be very wise also in Berlin (and many do use it, if you look around).