OpenStreetMap
Update: answers
Are there any other relations except 18560 and 13288 marking the Euro Route R1?
Answer: see Euro_Route_R1#Relations
Why are there two relations of exactly the same thing?
Answer: the more recent relation/18560 had been tagged as EuroVelo2 before being changed to R1. Both are identical in Germany (not in other countries though).
See Euro_Route_R1#R1.2C_D3_and_EV2
Is there any reason why those two stop exactly at the German borders even if the real route covers many other European countries?
D3 (rel 13288) is a German national route. The other one should be merged into 13288 anyway.
Is there any better name than just "R1" or the German names "D3" and "Europaradweg R1"? What makes it even more complicated is that there is another bike route named R1 in Hessen, Germany which does not have anything else in common than the name and the vehicle.
Original name: R1 (regional route 1), later named "Europaradweg R1", translated "Euro Route R1". Short name on signposts: "R1".
Discussion
Comment from emka on 24 October 2008 at 18:44
osm.wiki/index.php/Cycle_routes
This page is giving me some answers:
18560 is network = lcn
13288 is network = ncn
What I need for Europe is network=icn as an international route.
My first question remains: are there any other relations marking the Euro Route R1?
And another easy beginners question: Is it possible to create a relation containing relations? I will find out tomorrow.
Comment from smsm1 on 28 October 2008 at 14:51
You can have a relation containing relations. The only international cycle route that I know of off the top of my head, is the one that runs up the east coast of the UK, then acrross the north sea to Scandanavia, then down the west coast of mainland Europe. Think it's called the north sea cycle route.