[Tagging] What is the role of "role=guidepost"

Volker Schmidt voschix at gmail.com
Sat Apr 13 10:06:08 UTC 2019

But your example is different. You put the function into the name field.
For me the role of an object tagged information=guidepost is exactly that,
a guidepost.  I am sure I am missing something, otherwise it would not have
50k uses.
I admit to being Overpass-ignorant. Can someone help me find examples,
where a guidepost in a route relation has a role that is neither <empty>
nor "guidepost.

On Sat, 13 Apr 2019, 11:09 ajt1047 at gmail.com, <ajt1047 at gmail.com> wrote:

> On 13/04/2019 09:52, Volker Schmidt wrote:
> > I have only now detected this (optional?) role value in route relations.
> > What's the purpose of this?
> > Or put in other words: I have a node tagged with
> > "information=guidepost". What is the difference between inserting it
> > in a route relation with or without "role=guidepost"
> >
> Without a role you have no idea how a guidepost or route_marker relates
> to the route as a whole.  Does it tell you how to go to the next bit?
> Is it the start or the finish?  Is it something else?  Also, it's
> possible for one guidepost or route_marker to have different roles
> within different routes.
> Here's one locally that I've tried to annotate with roles:
> https://www.openstreetmap.org/relation/6563955
> (see https://taginfo.openstreetmap.org/search?q=marker#roles for the
> usage of those tags, or lack of them).
> I suspect that "role=guidepost" is someone doing the same thing, but
> only for guideposts.
> Best Regards,
> Andy
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