<div dir="ltr">It's a bit of a mess in Nederland as well - lots of small residential roads have once been imported as unclassified, under the assumption that unclassified means there is no official classification. Which was wrong because unclassified is in fact a classification. As a result, unclassified in OSM in Nederland now says that the classification is not known: anything below tertiary can be unclassified. <div><br></div><div>You cannot deduct anything from unclassified. </div><div><br></div><div>Residential just means it has housing along the road.</div><div><br></div><div>Unclassified roads within a residential area are probably (but not always) residential. <br><div><br></div><div>Routing cannot rely on this. I would not rely on a router if it relies on this tag.</div><div><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature">Fr gr Peter Elderson</div></div><br></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Op wo 20 feb. 2019 om 12:08 schreef Florian Lohoff <<a href="mailto:f@zz.de">f@zz.de</a>>:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><br>
Hi Georg,<br>
<br>
On Wed, Feb 20, 2019 at 11:03:15AM +0100, Georg Feddern wrote:<br>
> Even the english wiki says:<br>
> "The tag highway<br>
> <<a href="https://wiki.openstreetmap.org/wiki/Key:highway" rel="noreferrer" target="_blank">https://wiki.openstreetmap.org/wiki/Key:highway</a>>=unclassified is used for<br>
> minor public roads typically at the lowest level of the interconnecting grid<br>
> network."<br>
<br>
Yes - An unclassified road is a road which does not have any<br>
classification. As does a residential not have a classification.<br>
<br>
"Unclassified roads have lower importance in the road network<br>
than tertiary roads, and are not residential streets or<br>
agricultural tracks."<br>
<br>
Lower importance than tertiary - NOT residential. No word about<br>
beeing of higher importance than residential. <br>
<br>
When you continue reading the distinction is that you MAY use an<br>
unclassified in city limits when there is no residential usage.<br>
<br>
"Public roads of low importance within town and cities that are not<br>
residential may also be highway=unclassified."<br>
<br>
For me this means that 99% of the roads within city boundarys cant<br>
be unclassified because there is residential usage.<br>
<br>
> As part of the interconnecting grid network it should connect to at least<br>
> unclassified or higher roads - unless it is a dead end settlement.<br>
> Tagging a through connecting road only because it is inside a city limit as<br>
> residential makes no sense.<br>
<br>
Why not? This enables a routing engine to assume different<br>
characteristics of roads.<br>
<br>
> And usually a connecting road from outside a city limit has at least a bit<br>
> more traffic as an inner-city-only residential.<br>
<br>
Have you had a look at the original example images for an unclassified?<br>
<br>
<a href="https://wiki.openstreetmap.org/wiki/File:Highway_unclassified-photo.jpg" rel="noreferrer" target="_blank">https://wiki.openstreetmap.org/wiki/File:Highway_unclassified-photo.jpg</a><br>
<br>
I would not expect more traffic here - I'd expect less.<br>
<br>
> So the conclusion an unclassified has a bit higher priority than a<br>
> residential is not far from reality.<br>
<br>
Not in my reality and not in the original OSMs reality. Yes - through<br>
misleading statements in the German article this might have influenced<br>
at least the German community to assume otherwise - This is why<br>
i request clarification.<br>
<br>
> Otherwise there is often the problem to tag the main access roads inside a<br>
> bigger residential area.<br>
<br>
The region where i map mostly we agreed that we may tag roads with clear<br>
interconnecting character and wider lanes with one class higher than<br>
they would have by assuming the strict classification. We agreed<br>
that the causes by which we tag higher be placed in a note= tag on<br>
the road.<br>
<br>
So a large wide interconnecting road within city limits might be<br>
a tertiary. <br>
<br>
> The practice to tag those as unclassified for a bit higher priority may not<br>
> be optimal - but suitable.<br>
> <br>
> This discussion - and usage - is some years old now - and I thought you had<br>
> at least knowledge of it from the german forum.<br>
<br>
My knowledge and usage predates the German Forum by years - I was astonished<br>
finding statements in the German article for unclassified which do not match<br>
(but oppose) the English versions which i typically use and prefer.<br>
<br>
Its not the first time i find the German articles to contain a hidden<br>
agenda bei a minority or single mappers trying to steer the community.<br>
<br>
Flo<br>
-- <br>
Florian Lohoff <a href="mailto:f@zz.de" target="_blank">f@zz.de</a><br>
UTF-8 Test: The 🐈 ran after a 🐁, but the 🐁 ran away<br>
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</blockquote></div>