[Talk-GB] Where does a motorway start?

[Mateusz Konieczny]

In Poland we used to map motorways since 
"motorway" traffic sign, but there was community consensus
to map since road divergence.

See http://nrenner.github.io/achavi/?changeset=100300097
https://www.openstreetmap.org/changeset/100300097 for a typical
edit implementing this change.

People really caring about where motorway signs are placed can
simply map traffic signs itself, see
https://wiki.openstreetmap.org/wiki/Key:traffic%20sign

And yes, it is matter of style and consistency.

Aug 3, 2022, 10:18 by ajt1047 at gmail.com:

> Hello,
>
> The DWG has recently had an email from someone asking about some recent motorway edits.  These have been in various places, so I'll pick an example local to me, where the A64 joins the A1(M): https://nrenner.github.io/achavi/?changeset=123673170 .
>
> The edit moved the start of the motorway from where the roads diverge:
>
> https://www.mapillary.com/app/?focus=photo&pKey=2478290038984023&lat=53.856169399972&lng=-1.3365381&z=17&x=0.48881009070232434&y=0.6403049169362514&zoom=3
>
> to just after the “chopsticks” sign visible in front of the lamppost at the right of the carriageway in edit mode at https://www.openstreetmap.org/#map=18/53.85550/-1.33895 :
>
> https://www.mapillary.com/app/?focus=photo&pKey=493444768591097&lat=53.855654360067&lng=-1.3384409007607&z=17
>
> I suspect that this is more a question of style than anything else - no router is going to send non-motorway traffic down a oneway section of trunk link which only exits to a motorway link. Personally, I'd say that the motorway starts where the roads diverge, but I didn't feel strongly enough to comment about it when I saw another of these changes a few days ago.  I said to the DWG's correspondent that I'd ask here, so here this message is.
>
> Best Regards,
>
> Andy (from OSM's Data Working Group)
>
>
>
>
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