The eurovelo1 route is very well signed
It is very well signposted but its taken your post for me to figure out what the signpost at the end of our road was actually for 🙂
The signs are pretty much just marker boards but it looks a good shout as it appears to be a well thought out route, the bits I know of it are a really good choice to see the off-piste country side (although it may be a good thing no gradient lines are included).