If you have ever been to Berlin, you are probably familiar with this view: a rather typical photo of a cobblestone street somewhere in Berlin Mitte. This pattern may look beautiful – but riding your bicycle on this kind of street can be difficult, especially when the streets are wet. Also, cars drivin on cobblestone streets are slightly more noisy – but at least everybody seems to drive a bit mre careful, since the nobody wants to ruin their bumpers.
