In Finland, we currently have named roads as "180 - Saaristotie" etc. and would like to get rid of the number in street name and just leave the shield. But that is not possible because we have quite a few locations where road number changes while road name stays the same. Another problem is when road category changes to minor road so that the number drops off completely.

So there is a need for feature where you could set an override shield to selected segments while the default sign for that road name stays active on other segments.