May I make a suggestion?
The reason as to why I never attached any street signs, (apart from some smaller crosswalk signs etc), in my upcoming roadset, is that it doesn't look good in towns with lots of junctions! However, making use of them on the countryside makes more sense as there's a reason for them there, (giving people directions), which I also did in my set!
Other than that I think it's good you're coding them as these kind of stuff adds to the game in a positive and more realistic way!
