Do you have examples of wordy US signs that are only symbolic in the EU system? All of the ones I see on the article are either city names or pedestrian signs with complex instructions that I don't think could be conveyed effectively in only symbolic form.
The ones I can think of that are words only that might have a better symbolic notation are Dead End, No Outlet, and No Passing Zone.
The ones I can think of that are words only that might have a better symbolic notation are Dead End, No Outlet, and No Passing Zone.