Adopted from the Dutch models in Germany. As a cyclist, you can use the junction system for your tour planning. All nodes on the selected route are simply noted and, for example, the number 4 - 6 - 3 - 5 - 15 - 4 is approached.
If you are on the bike path, you will be guided very well at the junctions. And there you can always discover a little detour through the very beautiful regions in the area.