Hi @Intrigued and thanks for adding these new weight restrictions.

I've changed these to maxweightrating:hgv=7.5, as the weight restriction in the traffic order and corresponding signs is for "goods vehicles having a maximum gross weight of over 7.5 tonnes" and all goods vehicles ≥ 3.5t are HGVs.

There's been some ambiguity in the past over how to tag weight restrictions in the UK and tagging schemes have evolved over time, but hopefully the wiki now reflects the current position.

https://www.openstreetmap.org/changeset/172128787