Also: below pavements there are usually quite a lot supply lines as that's the only available space. All work there has to be done careful not to damage anythin

Also: below pavements there are usually quite a lot supply lines as that's the only available space. All work there has to be done careful not to damage anything. On a larger parking lot however there is just a single power line for the lights and little sewage for collecting rain water, while most other area is free.