To add to the other replies, you add it to the road. You can also add the speed signs if you want however
this post was submitted on 21 Dec 2025
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Ah, thank you! That's exactly what I was wondering!
@MXC48 The documentation for the speed limit tag is here:
https://wiki.openstreetmap.org/wiki/Key:maxspeed
The "default" iD editor has a field for this if you apply a road preset to a way.
Are these new speed limits only due to the roadworks or are they permanent? If it's the former, I probably wouldn't bother mapping it, or only if the construction lasts for at least a few months.
These new speed limit are permanent, so I want to add them