Interesting. I just found this instruction. I'm guessing you already did too. (Source)
For speed limits depending on the way direction, see maxspeed:forward=*.
So I would say, map that section of road with forward/backward speeds. Also, the signs should be independent nodes.
The position of the actual speed limit signs can be added as nodes beside the road/railway/waterway
Good commit messages always help me find the bugs I introduced.
Interesting. I just found this instruction. I'm guessing you already did too. (Source)
So I would say, map that section of road with forward/backward speeds. Also, the signs should be independent nodes.