[HOT] Fwd: Re: New Job for Tracing in the Congo
Claire Halleux
Claire.du.RGC at gmail.com
Sun Mar 24 22:42:21 UTC 2013
Regarding the road classification in DRC,
the RGC follows (or at least tries to follow) the official directives and
classifications established by the 3 road authorities*. Those ones are
however not always very accurate for now, mainly because of the missing
georeferenced data on road networks. Numbers given by national institutions
can sometimes be found wrong on the ground (mainly because most was not
recently updated). The RGC is training national institutions for improving
their data.
Official classification does not seem neither to be directly transferable
into OSM classification because of some kinds of "arbitrary" categories
which couldn't be guessed by contributors.
Therefore, when there is no obvious contradiction with existing data, I
think the best option for new objects would be, as already suggested, to
follow the classification described for Mali (or, as Pierre said, for
African countries).
With more field data becoming available, we might be able to make necessary
changes later.
Rafael,
If a road is a national one in DRC, it can still be a track which cannot
even handle a car on some sections. Therefore, I don't think it is
appropriate to call it "trunk". There are not many kilometers of motorway
yet in the country, specially not in the Kivus. In my understanding, trunk
and motorway tags involve a practicability aspect (and this should be
checked from the field) while primary etc... are more "geographically"
oriented.
Eric,
I think your suggestion (primary/secondary/tertiary) is quite ok, regarding
the accuracy of the available knowledge. In the ratios comparison, we also
need to take into account the fact that in those countries the road
networks might not have been fully developed yet. And this can explain the
lower quantity of tertiary roads, because of the low amount of vehicles
used for the moment in those areas.
Within a month, we should be able to publish an update of RGC road data on
our website. Then, we would love to get OSM contributors helping us to
"fully" complete the geometry of DRC road network. I will keep you informed
about this as soon as possible.
Claire
* The 3 roads authorities in DRC are the following:
- Office des Routes (OR): They take care of the prioritary road network:
national and provincial roads mainly (RRIG);
- Direction des Voies de Desserte Agricole (DVDA): They take care of the
tracks and roads of agricultural interest;
- Office des Voiries et Drainage (OVD): They manage all roads and gutter
system within (officially classified) cities.
2013/3/24 Pierre Béland <pierzenh at yahoo.fr>
> Rafael,
>
> We can see from this pdf that there is good information about road
> classification in DR Congo. But this map is not detailed enough and there
> is no shape file provided for road classification in the rgc.cd site. I
> will check with Claire Halleux if such file is available.
>
>
> Pierre
>
> ------------------------------
> *De :* Rafael Avila Coya <ravilacoya at gmail.com>
> *À :* Pierre Béland <pierzenh at yahoo.fr>
> *Cc :* "hot at openstreetmap.org" <hot at openstreetmap.org>
> *Envoyé le :* Dimanche 24 mars 2013 14h34
> *Objet :* Re: [HOT] Fwd: Re: New Job for Tracing in the Congo
>
> Hi, Pierre:
>
> Looking for documentation, I found some official documents that classify
> the major roads of the RDC [1].
>
> The document 4.1 [2] classifies the roads in 3 different types: routes
> nationales, routes provinciales prioritaires and routes provinciales
> secondaires.
>
> Wouldn't it be better for the RDC to take those documents as a reference?
>
> Another concern is I'm finding some roads that have a ref. that doesn't
> match with those documents. For example, road RP1030 appears as
> reference for different roads/branches, and moreover they change their
> type along the road. More puzzling is the fact that some of them have
> the tags attribution=«Ces données géographiques proviennent du
> Référentiel Géographique Commun (www.rgc.cd).» and source_ref=www.rgc.cd
> when they are clearly wrong according to that source. Source date is
> 30th November 2007, though.
>
> I'm just tagging as tertiary and unclassified the roads that don't
> appear to have a ref. number (according to those docs) and would suggest
> to tag the rest following this schema:
>
> routes nationales=trunk
> routes provinciales prioritaires=primary
> routes provinciales secondaires=secondary
>
> What do you think? It quite follows the schema you proposed for Mali
> anyhow.
>
> Cheers,
>
> Rafael.
>
> [1]
>
> http://www.rgc.cd/site/index.php?option=com_phocadownload&view=category&id=12:autres-documents&Itemid=66
>
> [2]
>
> http://www.rgc.cd/site/phocadownload/4_1_nomenclature_routes_dinteret%20general_a4.pdf
>
> On 24/03/13 14:15, Pierre Béland wrote:
> > Rafael
> >
> > When mapping in african countries, we do not have access to
> > documentation that classify roads. I proposed a classification for Mali
> > roads which I think is pertinent for african countries in general. This
> > road classification is based on the observation of town sizes. The
> > primary and secondary classes are for major towns and the tertiary for
> > intermediate size towns. The unclassifed category is for smaller towns.
> > see http://wiki.openstreetmap.org/wiki/Mali_Highway_tag
> >
> > Looking at roads classification around Kitchanga, I observe in general a
> > good hierarchy of roads. But the network of tertiary roads is incomplete
> > and needs to be revised. If you are not sure, use the unclassified
> > attribute. Once the network is completed, it should be easier to revise
> > the classification.
> >
> > Pierre
> >
> >
> ------------------------------------------------------------------------
> > *De :* Rafael Avila Coya <ravilacoya at gmail.com>
> > *À :* hot at openstreetmap.org
> > *Envoyé le :* Dimanche 24 mars 2013 8h34
> > *Objet :* [HOT] Fwd: Re: New Job for Tracing in the Congo
> >
> > Oups! I forgot the wiki URL:
> > https://wiki.openstreetmap.org/wiki/WikiProject_Congo-Kinshasa/Routes
> >
> >
> > -------- Original Message --------
> > Subject: Re: [HOT] New Job for Tracing in the Congo
> > Date: Sun, 24 Mar 2013 13:29:44 +0100
> > From: Rafael Avila Coya <ravilacoya at gmail.com
> > <mailto:ravilacoya at gmail.com>>
> > To: hot at openstreetmap.org <mailto:hot at openstreetmap.org>
> >
> > Has anyone get any consensus on how to tag the national and provincial
> > roads in RDC?
> >
> > There is a wiki [1] with very nice info about the roads, with their
> > references and routes, but it doesn't say how to tag each of them:
> > trunk, primary, secondary, tertiary and unclassified.
> >
> > Any clue?
> >
> > Cheers,
> >
> > Rafael Ávila Coya (edvac).
> >
> > On 23/03/13 18:17, Pierre Béland wrote:
> > > The area around Sake and Kitchanga is a strategic point at the
> > carrefour
> > > of various roads and humanitarians have expressed concerns. There
> have
> > > been violences repeatedly, massive displacements of people and
> > sanitary
> > > risks. Thanks to the US State Department, we now have good imagery
> to
> > > cover this area. Thanks also to Jean-Guilhem and Andrew for the
> > imagery
> > > corrections and server setups.
> > >
> > > We should be able to cover this area rapidly. While we have access
> to
> > > the Nextview imagery, we should map as much as we can. For this
> Task
> > > Manager job, We will give Workflow instructions to map this area in
> > > detail including the buildings.
> > >
> > >
> > > Pierre
> > >
> > >
> >
> ------------------------------------------------------------------------
> > > *De :* Jean-Guilhem Cailton <jgc at arkemie.com
> > <mailto:jgc at arkemie.com>>
> > > *À :* hot at openstreetmap.org <mailto:hot at openstreetmap.org>
> > > *Envoyé le :* Samedi 23 mars 2013 10h45
> > > *Objet :* Re: [HOT] New Job for Tracing in the Congo
> > >
> > > Hi,
> > >
> > > When I pointed out that clear high resolution images of the town
> of
> > > Kitchanga (and of the area between Saké and Kitchanga,
> > including the
> > > village of Burungu) were available, thanks to the State
> Department,
> > > Claire, who is our main contact in DRC, replied that :
> > > "We could set tasks for the national road surroundings, Burungu
> and
> > > Kitchanga.
> > > But it would also be valuable to use them for mapping all visible
> > > infrastructures out of those first three."
> > >
> > > And, half an hour later, she added :
> > > "ICRC confirmed their interest for Kitchanga data already.
> > > Considering the level of recent damages in town, it would be
> > good to
> > > get all the buildings drawn as well.
> > > Some other organisations might also be interested soon."
> > >
> > >
> > > For more information in your language about what happened
> recently
> > > in Kitchanga, you can look it up in your favorite search engine.
> > >
> > > Here are for example a few links, in English :
> > >
> >
> https://www.doctorswithoutborders.org/news/article.cfm?id=6673&cat=field-news
> > > http://www.bbc.co.uk/news/world-africa-21623068
> > >
> > > and in French :
> > >
> >
> http://blog.lesoir.be/colette-braeckman/2013/03/07/kitchanga-nord-kivu-ville-martyre/
> > >
> >
> http://radiookapi.net/actualite/2013/03/06/felix-prosper-basse-la-monusco-appuye-les-fardc-pour-empecher-lavancee-de-lapcls/#more-144986
> > >
> >
> http://www.rtbf.be/info/monde/detail_nord-kivu-kitchanga-se-noie-dans-son-sang?id=7943339
> > >
> >
> http://www.lemonde.fr/afrique/article/2013/03/07/la-croix-rouge-denonce-une-situation-dramatique-a-kitchanga-en-rdc_1844415_3212.html
> > >
> > >
> > > Best wishes,
> > >
> > > Jean-Guilhem
> > >
> > >
> > > Le 23/03/2013 14:48, Andrew Buck a écrit :
> > >> I am not sure what the goal is specifically, only that we have
> > a gap
> > >> in our coverage in the strip heading north from Sake and we were
> > >> granted access to some imagery to cover the area. We got the
> > imagery
> > >> due to interest in the region from humanitarian organizations,
> > but I
> > >> do not know who asked for the coverage or what specifically
> > they are
> > >> looking for. All I know is that we were missing imagery for
> > this area
> > >> and now we have it.
> > >>
> > >> Wish I had a more specific answer for you but that is all I
> > have at
> > >> this point. Hopefully someone can elaborate further so we can
> set
> > >> priorities appropriately, but even if not, this is just a good
> > gap in
> > >> our coverage to fill in anyway.
> > >>
> > >> -AndrewBuck
> > >>
> > >> _______________________________________________
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> > >>
> > >
> > >
> > > --
> > > gpg 0x5939EAE2
> > >
> > >
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> > --
> > Twitter: http://twitter.com/ravilacoya
> >
> > --------------------------------
> >
> > Por favor, non me envíe documentos con extensións .doc, .docx, .xls,
> > .xlsx, .ppt, .pptx, aínda podendoo facer, non os abro.
> >
> > Atendendo á lexislación vixente, empregue formatos estándares e
> abertos.
> >
> > http://es.wikipedia.org/wiki/OpenDocument#Tipos_de_ficheros
> >
> >
> >
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> >
> >
>
> --
> Twitter: http://twitter.com/ravilacoya
>
> --------------------------------
>
> Por favor, non me envíe documentos con extensións .doc, .docx, .xls,
> .xlsx, .ppt, .pptx, aínda podendoo facer, non os abro.
>
> Atendendo á lexislación vixente, empregue formatos estándares e abertos.
>
> http://es.wikipedia.org/wiki/OpenDocument#Tipos_de_ficheros
>
>
>
> _______________________________________________
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> http://lists.openstreetmap.org/listinfo/hot
>
>
--
Claire Halleux
*- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*
*Geographic Information Systems Specialist
*
*Kinshasa, Democratic Rep. of the Congo*
*Mobile: +243 99 256 9980*
*http://www.rgc.cd*
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