It is a the side of ths bridge that crosses the tracks. It is curved but the concrete is very good to paint on. The wall is next to a "Wasserrückhaltebecken" so there is a fence maybe 2 meters away from the wall. as a result it is hard to take photos and it is not possible to step back to get a better overview. Also there are many pedestrians passing by. The S-Bahn station Ratingen Ost is directly next to it. There are enough Trash bins so there is no need to leave your empty cans
Is this wall still safe to paint?