[Tagging] Roads with a postal_code each side

[Jo]

If you want to find weird situations, come to Belgium. This street is in
one province on one side, and in another on the other side, so obviously
also different postal codes:
https://www.openstreetmap.org/edit#map=18/51.024397/4.731540
It even has slightly different names: Langstraat/Langestraat. And if you
follow it, or look at the houses on it, it gets weirder and weirder. Must
be a nightmare to get a package or a pizza delivered there.
Back in the day there were associatedStreet relations. For some reason they
weren't liked, to state it mildly, but that's where I added the postal code
for these different sides + the houses.

Polyglot

Op vr 17 jan 2025 om 18:33 schreef santamariense <imagens.sm at gmail.com>:

> Hello everyone,
>
> There are some cases of roads with a postal_code each side, but there is
> no oficial way of mapping them. I would appreciate it if we discuss, vote
> and document them on the Wiki.
>
> It seems that the most natural way of mapping them is with
> postal_code:left=* and postal_code:right=* . However it is not always easy
> to determine the correct side each postal code refers to. Sometimes the
> postal code refers to the odd or even side and there is no house number
> mapped yet to be used as reference to determine the postal code side.
> Therefore, postal_code:[left/right]=* does not always  seem the best option.
>
> In Brazil, there are some cases of postal_code:side:[even/odd]=*. This
> approach makes it easy to map when one does not know which side of the road
> is even/odd.
>
> I am looking forward to reading your points of views regarding the matter
> and to knowing similar cases as well.
>
> Best,
> santamariense
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