[Talk-br] Road network improvements in Brazil

[Andrew Wiseman]

Hello OSM Brazil,

My name is Andrew Wiseman, I work for Apple on the Maps team. My team is interested in doing some work on the road network in Brazil on OpenStreetMap, things like adding missing roads, making sure roads connect properly, fixing incorrect alignments with GPS traces, ensuring road classifications are consistent, and other similar issues.

Are there places you know of that need improvement or types of problems you see frequently? Also I saw these guidelines about road classifications, are they the most recent classifications used by the community, or are there any others we should be aware of? https://wiki.openstreetmap.org/wiki/Pt:How_to_map_a

We have a Github page here about the project: https://github.com/osmlab/appledata/issues/126

Please let me know if you have any suggestions or feedback.

Thank you,
Andrew
Apple, Inc.


Andrew Wiseman |  Maps | ***@apple.com <mailto:***@apple.com>

[Fernando Trebien]

Hi Andrew,

Classification is a hotly debated topic that surely deserves more
attention, with many controversial proposals as written in the
article. The system proposed in the article dates back to 2013 and has
been heavily criticised, producing fragmentary networks in regions
with many unpaved roads (most places in Brazil except the most
developed regions along the coast). Recently there has been a very
interesting forum thread focused on rural highway classification in
the southermost state of Rio Grande do Sul [1], where mappers have
agreed to diverge from the system proposed in 2013 (what's on the wiki
right now).

The wiki does not talk about urban street classification. The
Brazilian community has agreed to try to follow municipal plans as
closely as possible. So far, only the street classification in the
region of Porto Alegre is documented in detail [2]. We have gathered
the official street classification of many cities [3], but most have
not been reviewed yet, a few have been reviewed but not documented. In
Santa Maria [4], some classification has been done but the mappers
have stated that they did not base their work on the community's
agreement, instead following an approach more similar to that of 2013.

[1] https://forum.openstreetmap.org/viewtopic.php?id=62430
[2] https://wiki.openstreetmap.org/wiki/Pt:Porto_Alegre,_Rio_Grande_do_Sul/Sistema_Vi%C3%A1rio
[3] https://wiki.openstreetmap.org/wiki/Category:Cidades_com_hierarquia_vi%C3%A1ria_oficial
[4] https://wiki.openstreetmap.org/wiki/Santa_Maria,_Rio_Grande_do_Sul/Sistema_Vi%C3%A1rio

Post by Andrew Wiseman
Hello OSM Brazil,
My name is Andrew Wiseman, I work for Apple on the Maps team. My team is interested in doing some work on the road network in Brazil on OpenStreetMap, things like adding missing roads, making sure roads connect properly, fixing incorrect alignments with GPS traces, ensuring road classifications are consistent, and other similar issues.
Are there places you know of that need improvement or types of problems you see frequently? Also I saw these guidelines about road classifications, are they the most recent classifications used by the community, or are there any others we should be aware of? https://wiki.openstreetmap.org/wiki/Pt:How_to_map_a
We have a Github page here about the project: https://github.com/osmlab/appledata/issues/126
Please let me know if you have any suggestions or feedback.
Thank you,
Andrew
Apple, Inc.
_______________________________________________
Talk-br mailing list
https://lists.openstreetmap.org/listinfo/talk-br

[Fernando Trebien]

Post by Fernando Trebien
In
Santa Maria [4], some classification has been done but the mappers
have stated that they did not base their work on the community's
agreement, instead following an approach more similar to that of 2013.

Actually, the documentation seems a bit contradictory. It states that they
classified according to the offifial types of streets, but also state they
did not use the official data as basis for their work. So I'm not sure
what's the actual status there.

Post by Fernando Trebien

Post by Andrew Wiseman
Hello OSM Brazil,
My name is Andrew Wiseman, I work for Apple on the Maps team. My team is

interested in doing some work on the road network in Brazil on
OpenStreetMap, things like adding missing roads, making sure roads connect
properly, fixing incorrect alignments with GPS traces, ensuring road
classifications are consistent, and other similar issues.

Post by Andrew Wiseman
Are there places you know of that need improvement or types of problems

you see frequently? Also I saw these guidelines about road classifications,
are they the most recent classifications used by the community, or are
there any others we should be aware of?
https://wiki.openstreetmap.org/wiki/Pt:How_to_map_a
https://github.com/osmlab/appledata/issues/126

Post by Andrew Wiseman
Please let me know if you have any suggestions or feedback.
Thank you,
Andrew
Apple, Inc.
_______________________________________________
Talk-br mailing list
https://lists.openstreetmap.org/listinfo/talk-br

--
Fernando Trebien

[Fernando Trebien]

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[Nelson A. de Oliveira]

Hi, Andrew.

Post by Andrew Wiseman
Are there places you know of that need improvement or types of problems you see frequently? Also I saw these guidelines about road classifications, are they the most recent classifications used by the community, or are there any others we should be aware of? https://wiki.openstreetmap.org/wiki/Pt:How_to_map_a

I believe that most of the time you will not have to worry about
reclassifying entire highways, but only small segments to maintain the
continuity of the roads.
Here https://www.openstreetmap.org/#map=15/-10.8073/-37.1696 we have
two examples:

- a primary segment https://www.openstreetmap.org/way/276900076 which
is overclassified (it should be secondary)
- a tertiary segment https://www.openstreetmap.org/way/163099566 which
is underclassified (should also be secondary)

The Unmapped Places is also nice to locate possible places where we
are missing highways:
https://resultmaps.neis-one.org/unmapped#5/-13.966/-49.482

The Routing view from OSM Inspector should also be another source for
possible problems/improvements (specially to detect islands).

Best regards,
Nelson

[Paulo Carvalho]

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[santamariense]

I agree with the modifications so that the road classification could
keep a coerency, crossing a urban area without changing its category.

[Sérgio V.]

Hi,
If you want to find unmapped roads, you might look at this map, made with data from density of nodes and demographic density.

PNG image map:
https://www.dropbox.com/s/d8zld6cgwm6i5yg/JOSM-Backgr-DensNosOSMporHAB-R01.zip?dl=0

KML map of less mapped districts:
https://www.dropbox.com/s/ms70wy6iwaaexkq/DNH-zero-BR.zip?dl=0

Wiki (need Google translation from portuguese):
https://wiki.openstreetmap.org/wiki/Demografia_do_Brasil_como_auxiliar_no_OSM

This map of densities may be a bit outdated since 2017. But everytime I use this map I still found unmapped roads to map

- - - - - - - - - - - - - - - -
Sérgio - http://www.openstreetmap.org/user/smaprs
________________________________
De: Andrew Wiseman <***@apple.com>
Enviado: sexta-feira, 9 de novembro de 2018 14:37:39
Para: talk-***@openstreetmap.org
Assunto: [Talk-br] Road network improvements in Brazil

Hello OSM Brazil,

My name is Andrew Wiseman, I work for Apple on the Maps team. My team is interested in doing some work on the road network in Brazil on OpenStreetMap, things like adding missing roads, making sure roads connect properly, fixing incorrect alignments with GPS traces, ensuring road classifications are consistent, and other similar issues.

Are there places you know of that need improvement or types of problems you see frequently? Also I saw these guidelines about road classifications, are they the most recent classifications used by the community, or are there any others we should be aware of? https://wiki.openstreetmap.org/wiki/Pt:How_to_map_a

We have a Github page here about the project: https://github.com/osmlab/appledata/issues/126

Please let me know if you have any suggestions or feedback.

Thank you,
Andrew
Apple, Inc.


Andrew Wiseman |  Maps | ***@apple.com<mailto:***@apple.com>