Hello! Looking back at this again, it seems you're right that there should be no restrictions added in this changeset. Apologies and nice catch! I made a rare mistake of misinterpreting the sign as saying the restriction lasts 1 mile instead of beginning after 1 mile. My bad.

As for the sign on the other end (Hill Crescent Roundabout [3]), you can tell that the restriction starts after the turn on the right - and just to be sure, I tagged it after the turn on the left, too. Since the sign on Tempest rd [2] roundabout indicates the height and weight restrictions start at the same place, I think the restrictions from changeset 168849836 can stay as-is. As for this one - I'll fix it immediately.

https://www.openstreetmap.org/changeset/168849836