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