Add low emission zones city center

General talk
1

Hi all,

I am living in Madrid and since the beginning of the year there is a low emission zone in the city center. I would like to have you help to add it to the map.

Which steps I should do? I am newby OSM user:P

Thank you!
Gonçalo

2

Already exists https://www.openstreetmap.org/relation/13902330