radnaj
I am not doing it myself because, despite I know the syntax and how to edit, I am lacking the local knowledge to make it right.  I saw the restriction when I drove through that street (which was causing a traffic jam, since the change was recent and people were not expecting it).  I have asked local people to go there and see the exact restriction (e.g. whether it is only summer or high-season months, or always, to get right which streets are affected by it (e.g. only Calle de Richard Wagner or some other nearby streets), etc.