[Talk-us] Announcing progress: Minnesota Highway classification project publishes first guidance

[Paul Johnson]

On Thu, Jan 27, 2022 at 1:27 PM Bob Gambrel <rjgambrel at gmail.com> wrote:

> Several points were made above and will try to address them here.
>
> 1) Paul says: "Pretty sure there wasn't more input because everyone uses
> email, but not that many bother with Slack." Evin says: " I find it to be a
> better communication platform for discussing OSM related issues than this
> archaic mailing list."  Just an opinion:  I too, find Slack to be a very
> useful and capable mechanism. I also read what is in talk-us but rarely
> post. While I have used email all my life and find it useful for some
> things, I find Slack very good for capturing, saving, and sharing thoughts.
> I do believe that one's "favorite communication mechanism" is very personal
> and there are many, so I am not trashing one or another. And I am not here
> to defend Slack, as there are very strong opinions about it both ways.
> Regarding the bigger issue: should we be trying to use other channels to
> communicate? Yes. It was suggested (in Slack) that I reach out through
> Talk-us to gather more opinions. That is why I did the post, and it is nice
> to be picking up those opinions. To-date I have also used OSM to attempt to
> reach out (messages and changeset comments). I plan to try additional
> reach-out in the next day or so.
>

I said this also because literally everyone uses email.  I'd actually
surprise me if you didn't need email to sign up for Slack.


> 2) Paul says: "Motorway islands?  You mean a grade-seperated exit on an
> expressway?" I did not define motorway islands. I am just using common
> lingo that I have seen often, especially in the "#highway-classification"
> channel and in the US wiki. It is reasonably well defined in the US
> reclassification page if you have not looked there. The Minnesota page
> points to that page. I do not especially mean a "grade-seperated exit on an
> expressway"  The term expressway is also defined on the US page and
> Minnesota adopts that usage. I am talking about a motorway segment
> (highway=motorway) as defined by the OSM wiki, that is relatively short (a
> few interchanges), that meets all the requirements of a motorway, and that
> connects on both sides to something that is not a motorway.
>

OK, thank you for clearing that up.


> 4) I really don't know what you (Paul) mean by a troll tag. Not in my
> lingo.
>

Something a data consumer has to parse extra data for in order to clear up
an ambiguous tag.


> 5) Evin says: "As for motorway islands, I don't see anything wrong with
> these as long as there's not just one interchange sandwiched between at
> grade interesctions. I think everybody can agree that it's bad tagging to
> tag a road as motorway when there's only one interchange. I change these
> back to trunk whenever I come across them without hesitation." We in
> Minnesota did not agree that it's bad tagging. I will share this opinion on
> the channel and see what folks think.
>


> 8) Evin says: "it's certainly possible for a freeway to end at an at grade
> intersection. That's the best place to end a motorway; anything else would
> just seem arbitrary." Again, I don't use the term freeway so won't weigh
> in. There seems to be a lot of consensus that an at grade intersection is a
> good place to end a motorway. Minnesota adopts that position.
>

Basically freeways (motorways) are a subset of expressway.  Expressways can
have ramps.  They can have at grade intersections.  Freeways don't have
at-grade intersections.  If a segment ends with an at-grade junction, it's
still an expressway, but the motorway ended with the previous junction.

>
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