A modern road map would have the road identification, always, but would probably tone down everything else (I'm thinking water courses mainly, imho you have too many and too visible for a road map). A general geography map, on the other hand would probably do without.
So, what I'm trying to say is that it looks good both ways, but it's a call you cannot avoid taking about what kind of map you are creating.

And also, did you think about adding some letters to those numbers. Modern road systems have different kind of roads with letters added to the identification.. A-07, N-107-A, R-70, whatever...