Hi @emersonveenstra,
Since @TinPetrković is out of office today, I am writing here as a leader of OptimoRoute organised editing activity
(https://wiki.openstreetmap.org/wiki/Organised_Editing/Activities/OptimoRoute)

Thanks for pointing this out, after detail internal review we fixed all same occasional mistakes by our mapper: the ‘trailer’ condition was missing on a specific weight limit sign (https://wiki.openstreetmap.org/wiki/MUTCD/R#:~:text=maxweight%3Ahgv%3Aconditional%3D16%20st%20%40%20%28trailer%29)

This is the changeset with the update https://www.openstreetmap.org/changeset/170002979