[OSM-talk] Misclassified roads

Stefan Neufeind openstreetmap at stefan-neufeind.de
Thu Jul 10 17:18:25 BST 2008


I think that's what people use

	key = fixme
	value = <note>

for, wrong?


Kind regards,
  Stefan

Alex Wilson wrote:
> Perhaps a compromise would be to add a new tag: something like 
> 'needs_review=true'. After a revisit of the road, the tag can be removed 
> and the road classification left as is or modified as appropriate.
> 
> Cheers,
> 
> Alex
> 
> 2008/7/10 David Ebling <dave_ebling at yahoo.co.uk 
> <mailto:dave_ebling at yahoo.co.uk>>:
> 
>     Steve, I would suggest you reconsider doing this.
> 
>     I would strongly support the use of highway=road for new roads that
>     no information is available for, eg from a trace that was done with
>     a car but no notes were made.
> 
>     However, by retagging "unclassified" to "road" you are essentially
>     deleting information from the database that you don't know to be
>     incorrect. Sure, if you know the classification is correct, change
>     it, but don't just delete it - it could be correct.
> 
>     For what it's worth, I work on the following basis for UK road
>     classifications:
>     * trunk/primary/secondary - as signed.
>     * tertiary - other roads that predominantly have a white line of
>     some sort down the centre. These tend to be wider roads used by more
>     traffic. I believe OS maps use a similar distinction, and I think
>     it's useful for planning routes, both with a map or automatically.
>     * unclassified - roads without a centre line. If they are too narrow
>     for passing, I add lanes=1.
> 
>     On this basis I have mapped a great number of unclassified roads. It
>     would be a real shame if you deleted this information that I had
>     carefully collected.
> 
>     I accept that there are a large number of incorrectly tagged roads
>     out there, but correct them, don't delete info on the offchance.
> 
>     Regards,
> 
>     David
> 
>      > Message: 2
>      > Date: Wed, 9 Jul 2008 15:36:03 +0100 (BST)
>      > From: Steve Hill <steve at nexusuk.org <mailto:steve at nexusuk.org>>
>      > Subject: [OSM-talk] Misclassified roads
>      > To: talk at openstreetmap.org <mailto:talk at openstreetmap.org>
>      > Message-ID:
>      >       <alpine.LRH.1.10.0807091519190.26751 at persephone.nexusuk.org
>     <mailto:alpine.LRH.1.10.0807091519190.26751 at persephone.nexusuk.org>>
>      > Content-Type: TEXT/PLAIN; format=flowed; charset=US-ASCII
>      >
>      >
>      > Following the approval of the highway=road tag, I've
>      > set about
>      > aggressively changing a lot of the highway=unclassified
>      > roads around
>      > Swansea, that I believe are misclassified, to highway=road,
>      > with the
>      > intention that they can then be surveyed and reclassified
>      > correctly.
>      >
>      > However, after starting to do this, I've realised just
>      > how many of the
>      > roads are misclassified - I'd estimate that well over
>      > 80% of the roads
>      > tagged as highway=unclassified are, infact, not
>      > unclassified roads.  So
>      > I'm wondering about the merits of changing *all* the
>      > highway=unclassified roads in the area to highway=road so
>      > that the whole
>      > lot can be classified appropriately from scratch.  This
>      > would make it
>      > obvious which roads really are unclassified and which need
>      > to be checked.
>      >
>      > What are peoples' views on this?  I imagine that much
>      > of the OSM world is
>      > affected in the same way, and this renders the
>      > highway=unclassified tag
>      > relatively meaningless in it's current state.  Should
>      > there be a global
>      > reclassification to fix this, or is there a better way?
>      >
>      >   - Steve
>      >     xmpp:steve at nexusuk.org <mailto:xmpp%3Asteve at nexusuk.org>  
>     sip:steve at nexusuk.org <mailto:sip%3Asteve at nexusuk.org>
>      > http://www.nexusuk.org/




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