[HOT] Highway=residential in Africa

john whelan jwhelan0112 at gmail.com
Sun Jun 12 18:13:02 UTC 2016


​It appears the explanation is here:

http://hotosm.github.io/tracing-guides/guide/MozambiqueGuide.html

The Mozambique projects point to this page which describes how to map using
a town as an example, they do not reference the African highway tag wiki
http://wiki.openstreetmap.org/wiki/Highway_Tag_Africa.  Only secondary,
tertiary and residential roads are mentioned and nothing is there for more
rual areas nor is there any mention of paths or tracks.  It also explains
why I've seen buildings mapped with a name tag of thatched roof.  I'm not
sure why the buildings are differentiated by metal or thatched roof, my
understanding is they all get mapped building=yes.

We have mappers who are very experienced in mapping in Africa tagging one
way, we have new mappers trying to apply the instructions in the link for
urban areas to rural areas and the result is inconsistent mapping.

Nothing in the Mozambique Guide is contra to the African highway tagging
wiki it just doesn't go far enough for rural areas.

If someone could wave a magic wand conciliate the two I would be grateful.

Note to Courtney I think you have some connections in the Peace Corps.....

Thanks

Cheerio John​


On 12 June 2016 at 10:27, john whelan <jwhelan0112 at gmail.com> wrote:

> I agree with the local knowledge bit and perhaps the wiki could do with a
> bit of clarification since these mappers are working from imagery using the
> HOT tiles and its quite inconsistant considering they are using the same
> wiki for guidance.  Are they interpreting it differently or more likely not
> even looking at it.  It isn't always refered to in the instructions for the
> projects.
>
> One way to look at it is provided there is some sort of highway there then
> someone can clean it up later, but if its cleaner to start with its easier
> to work with.
>
> Cheerio John
>
> On 12 June 2016 at 10:16, Russell Deffner <russell.deffner at hotosm.org>
> wrote:
>
>> Hi John,
>>
>>
>>
>> Road classification, as most of us are well aware, is difficult to say
>> the least.  My opinion is that what suggest as ‘best practice’ for remote
>> mapping in Africa is to use this as a guide:
>> http://wiki.openstreetmap.org/wiki/Highway_Tag_Africa
>>
>>
>>
>> However, looking over it, I think it does need a ‘refresh’; it doesn’t
>> even mention trunk or service tags (not even a ‘don’t use’ rule of thumb),
>> however, I wonder if that image for primary roads doesn’t better show a
>> ‘trunk road’.
>>
>>
>>
>> Specifically, I think all road classification is only as good as the
>> local community, because often you can’t tell ‘significance’ or function
>> without local knowledge.
>>
>>
>>
>> =Russ
>>
>>
>>
>> *From:* john whelan [mailto:jwhelan0112 at gmail.com]
>> *Sent:* Sunday, June 12, 2016 7:21 AM
>> *To:* hot at openstreetmap.org
>> *Subject:* [HOT] Highway=residential in Africa
>>
>>
>>
>> When validating I'm seeing a large number of highways in rural areas
>> tagged as highway=residential rather than highway=unclassified mainly by
>> new mappers in maperthons but even one or two project managers are using
>> this designation and I'm not sure why.
>>
>> My expectation is a few highways within a landuse=residential ie mainly
>> towns or larger villages would be so tagged but not those outside.
>>
>>
>>
>> Thoughts?
>>
>> Thanks John
>>
>
>
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