[talk-au] [EXTERNAL] Re: Low quality road classification contributions in SA via Microsoft Open Maps Team - contact point?

cleary osm at 97k.com
Tue Jun 29 00:12:02 UTC 2021


Nemanjo

I have a strong contrary view.  I have mapped some isolated parts of South Australia, although not recently. Routing vehicles onto private roads creates significant issues for farmers, including threats to biosecurity. It can also endanger naive motorists to send them onto (sometimes impassable) tracks well out of phone range in any emergency. Adding such roads discredits OSM as a usable data source for many users.

Further, the Government of South Australia has been most generous in making a lot of data available to OSM, long before other Australian jurisdictions. Available data includes Roads (http://www.data.sa.gov.au/dataset/roads)  which shows a lot of information including the class of roads and names (where applicable). The data also shows extensive tracks that could be used by private owners or emergency services etc but are not public roads.  Public roads will have a class such as LOCL (local roads) or HWY (highway) and they have names.

>From my experience "on the ground", any road in that database which is unnamed is almost certainly not intended for public access.  Your team could refer to this data source and ensure that unnamed roads are shown as access=private. 

Please keep OSM showing usable and helpful data rather than discredit it with data that can alienate farmers, endanger their stock and crops, and also endanger road users.

Michael Cleary






On Mon, 28 Jun 2021, at 9:18 PM, Nemanja Bracko (E-Search) via Talk-au wrote:
>  
> Hi all,
>  
> As promised, I’m providing an update regarding the internal check.
> Our maintenance team has checked what happened, and here are the 
> results:
>  * We have used the following query <https://overpass-turbo.eu/s/18UG> 
> to filter all ways that may be affected for this task which we have 
> started on 06/09;
>  * The total number of the ways (segments) is 4,089 produced by our 
> team;
>  * 1,566 ways had no issues at all;
>  * 1,244 individual roads (mapped as 2,523 segments) had classification 
> error, however:
>    * 409 roads (1,137 segments) provide some connectivity; these roads 
> are not dead ends, however:
>      * 60 roads have barrier tag;
>      * 349 roads (945 segments) provide connectivity and do not have 
> any barrier tag;
>  
> Conclusion:
> We have to fix these 349 roads that provide connectivity and do not 
> have any barrier tag. We can adjust their classification in the form of 
> unclassified|residential > service + service=driveway (if/where 
> applicable), but we _cannot_ add any access=private|destination tags 
> since we do not have ground truth.
>  
> The rest of the roads will not affect any routing engine since these 
> are either deadends or have a barrier tag.
>  
> Thank you for raising this issue. We will try to prevent such 
> situations in the future.
>  
> If you have any additional questions regarding this or any future 
> issues, please don’t hesitate to contact me.
>  
> Thank you all,
> Nemanja
>  
> *From:* Nemanja Bračko <brackone at gmail.com> 
> *Sent:* Tuesday, June 22, 2021 5:46 PM
> *To:* Frederik Ramm <frederik at remote.org>
> *Cc:* OSM Australian Talk List <talk-au at openstreetmap.org>
> *Subject:* [EXTERNAL] Re: [talk-au] Low quality road classification 
> contributions in SA via Microsoft Open Maps Team - contact point?
>  
> Thank you all for support. I have learned that baby's nails nay be 
> razor sharp. :)
>  
> Anyway, the maintenance team has stopped their work until my colleagues 
> finish the analysis - what happened. Most of these are dead ends and 
> these do not provide any connectivity (between two roads) so it won't 
> have any influence for the missing attribute/tag 
> access=private/destination. We do not have such information, except to 
> trace the road per available resources.
>  
> We already had such discussion here, and we made corrections in our 
> policies regarding to that discussion.
>  
> Anyway, I do not want to spoil or to provide any wrong feedback atm, so 
> I'll get back to all of you in Monday. Editorial work is stopped for 
> now regarding this task.
>  
> Thanks,
> Nemanja
> Sent from my phone
>  
> On Tue, Jun 22, 2021, 09:43 Frederik Ramm <frederik at remote.org> wrote:
> > Hi,
> > 
> > @Nemanja in a personal capacity, all the best for your kid!
> > 
> > @Nemanja in a business capacity, just so that there are no 
> > misunderstandings: if there are doubts about the quality of an organised 
> > editing activity, that activity needs to pause until the doubts are 
> > resolved.
> > 
> > Getting back to the community after investigation is fine, but the 
> > activity must not continue and potentially introduce more errors in the 
> > mean time.
> > 
> > @AU community, If further bad data is added after a problem has been 
> > flagged, please report the participating accounts to DWG so that we can 
> > stop them.
> > 
> > Bye
> > Frederik
> > 
> > -- 
> > Frederik Ramm  ##  eMail frederik at remote.org  ##  N49°00'09" E008°23'33"
> > 
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