Get nearest point to a world object

[_Aka_]

I first understood that you will have a web of roads, but now I realize you are going to have a "tree" of roads (only 2 roads connections and no looping). True, there should probably be a simpler solution for this simpler case, but I don't see it right now. Probably involving a manual or automatic process to mark all the connections leading to a station with some marker (a MetaData would do the trick) to allow the train to decide where to go once reaching a connection