[Tagging] Different postal codes in each side of the street

[Fernando Trebien]

In Brazil some streets have a different postal code on each side.
There seems to be no officially defined tag to represent this on ways.
Nominatim supports [1] US TIGER tags tiger:zip_left and
tiger:zip_right, even though those could be replaced with postal code
boundary relations [2] in the future since they are areas [3]. It
doesn't seem to make sense to recommend using them outside the US.
Over here we could perhaps use a large number of postal code boundary
relations, or painstakingly add a postal code to every address.

What would you recommend in this situation? Perhaps we should adopt
postal_code:[side] and ask Nominatim developers to support that?

[1] https://github.com/openstreetmap/Nominatim/blob/master/utils/tigerAddressImport.py
[2] https://wiki.openstreetmap.org/wiki/Tag:boundary=postal_code
[3] http://www.zipmap.net/

-- 
Fernando Trebien
+55 (51) 9962-5409

"Nullius in verba."