[Tagging] Tags useful for rendering of roads in poor conditions

[Fernando Trebien]

This is why I said that a full description that is useful to everyone
would require many more tags than we currently have (about 6 or 7 as
far as I can imagine). Note that the way in this picture would be
classified quite differently for each vehicle type (pedestrians, and
maybe bikes to some extent can do just fine on it, but not
wheelchair).

I would tag this one as this:

surface=asphalt
tracktype=grade1 (grade2 says unpaved-only and says nothing about potholes)
smoothness=very_bad
mtb:scale=1
sac_scale=T1 (or maybe T2)
wheelchair=limited

But I think different people would disagree on whether we should
render that as a 'good' or a 'bad' road. The potholes would likely be
temporary in many countries, but not so much in others.

So maybe the renderer should consider all tags except surface and draw
the way as 'bad' if it is ever bad for someone (car, pedestrian,
cyclist or wheelchair user).

On Fri, Jan 3, 2014 at 11:26 PM, Dave Swarthout <daveswarthout at gmail.com> wrote:
> Now that is a bad road, even though it's paved. Before reading anything in
> this thread I would have applied the tags surface=asphalt,
> surface_condition=rough_less_than_40 kph (used 1232 times).
>
> Now, I'm not sure what I'd do ;-)
>
>
> On Sat, Jan 4, 2014 at 8:19 AM, malenki <osm_ at malenki.ch> wrote:
>>
>> Fernando Trebien wrote on Fri, 3 Jan 2014 17:56:15 -0200:
>>
>> >- people don't seem to agree on which tag to recommend overall to
>> >  describe surface conditions: tracktype, or smoothness, or simply
>> >  surface
>>
>> OSMers seem to agree that they need all of them.
>>
>> * Tracktype at least for more or less unimportant tracks,
>> * Surface for the material of surface of the road
>> * Smoothness at least for ways whose smoothness doesn't match the
>>   smoothness one would expect when looking at the surface=value
>>
>> How else would you describe an asphalted road like this?:
>> http://geoawesomeness.com/wp-content/uploads/2013/10/lidar1.jpg
>> (from
>>
>> http://geoawesomeness.com/application-of-mobile-lidar-on-pothole-detection/)
>>
>>
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>
>
>
> --
> Dave Swarthout
> Homer, Alaska
> Chiang Mai, Thailand
> Travel Blog at http://dswarthout.blogspot.com
>
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-- 
Fernando Trebien
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