[Tagging] decide on a meaning for what is not documented [way: Expressway=yes/no versus new tags "dual_carriageway=yes/no", "limited_access=", "grade_separated"=?]

[Martin Koppenhoefer]

Am Do., 20. Feb. 2020 um 13:07 Uhr schrieb Joseph Eisenberg <
joseph.eisenberg at gmail.com>:

>
> If people are interested in using it, I might make a proposal. But
> perhaps we will decided that database users should interpret the
> geometry and name=/ref= tags of parallel highway ways to add this
> information in post-processing. Does anyone know if that is feasible?



I guess it is possible to do it, but I cannot imagine a usecase for this
kind of information, besides statistics maybe. Why would it matter to
someone that there is another highway going into the opposite direction of
where they want to go, that someone considers to be part of the "same
road"? Isn't it sufficient to know the amount of lanes, oneway property,
highway class, etc. for most practical usecases?

As to the "limited_access" key in the thread title: it doesn't appear to be
in use, likely it would express the same concept as "motorroad"?

What about replacing "expressway" with "trunk", is there any information
loss or is this only about which term is better understood in a certain
context?


Cheers,
Martin
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