[OSM-talk] Recent spikes in the use of road key

Pierre Béland pierzenh at yahoo.fr
Wed Mar 3 19:31:50 UTC 2021

Yes this is more Quality problem.  I did removed the duplicated road=class with same class as highway. All where valid highways.


    Le mercredi 3 mars 2021 13 h 41 min 35 s UTC−5, Bert -Araali- Van Opstal <bert.araali.afritastic at gmail.com> a écrit :  
I agree, didn't say it is a violation (yet).
Combinations of the suspicious keys:
road_name = https://taginfo.openstreetmap.org/keys/road_name#combinations
road = https://taginfo.openstreetmap.org/keys/road#combinations
All seem to be in my opinion incorrect use and appeared massively in a very short time.
 On 03/03/2021 21:27, Pierre Béland wrote:
  We see a spike yes in objects references with road=*.   But we need to know what type of object they are describing. This tag can be the main tag that wants to refer to roads, or this can be a secondary tag used with a tag like historical=yes, memorial=*, etc. 
  Look for example at https://www.openstreetmap.org/node/2209159511 For the Taginfo chronology, the map shows the distribution and we see a lot of objects with road=* in Germany.  Suspecting more of these, 
  Below a short analysis with  Overpass queries to compare usage for nodes and ways comparing part of Europe with part of Africa.  In Germany, we observe that the tag  "historic": "milestone" is often used on nodes with road=Road name. In Africa, we find more ways that probably refer to highways.
  West Europe, 187 nodes https://overpass-turbo.eu/s/14vb                         79 ways  https://overpass-turbo.eu/s/14vc  
  Africa,               4 nodes https://overpass-turbo.eu/s/14vf                       338 ways  https://overpass-turbo.eu/s/14ve 
  As you see, we need deeper analysis to find where this spike comes from.
      Le mercredi 3 mars 2021 12 h 55 min 16 s UTC−5, Bert -Araali- Van Opstal <bert.araali.afritastic at gmail.com> a écrit :  
Taginfo link for chronology: https://taginfo.openstreetmap.org/keys/road#chronology
  On 03/03/2021 20:33, Bert -Araali- Van Opstal wrote:
Just the key "road=*", search for road in Taginfo tab KEY.
 In Taginfo I searched for the key, got a long list with all kinds of keys containing the word "road", then selected just "road" from the list returned by taginfo.
If you go to chronology tab you see the spikes very clearly.
Bert Araali
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