[Tagging] what is the meaning of bicycle=yes on highway=path

[Andy Townsend]

On 12/04/2019 14:24, Volker Schmidt wrote:
> @Mateusz
>
> I just got alerted that you added a paragraph on the wiki Page 
> OSM_tags_for_routing/Access-Restrictions 
> <https://wiki.openstreetmap.org/wiki/OSM_tags_for_routing/Access-Restrictions)>
> in which you state:
>
> " Note that explicit tagging of access repeating what following tables 
> imply may be still useful. For example bare highway 
> <https://wiki.openstreetmap.org/wiki/Key:highway>=path 
> <https://wiki.openstreetmap.org/wiki/Tag:highway%3Dpath> may mean 
> either "surveyed and all defaults apply" or "mapped from LIDAR, not 
> surveyed, may be private". In contrast highway 
> <https://wiki.openstreetmap.org/wiki/Key:highway>=path 
> <https://wiki.openstreetmap.org/wiki/Tag:highway%3Dpath> + foot 
> <https://wiki.openstreetmap.org/wiki/Key:foot>=yes 
> <https://wiki.openstreetmap.org/wiki/Tag:foot%3Dyes> + bicycle 
> <https://wiki.openstreetmap.org/wiki/Key:bicycle>=yes 
> <https://wiki.openstreetmap.org/wiki/Tag:bicycle%3Dyes> is more clear 
> what is its meaning."
>
That addition from Mateusz seems reasonable to me - he's just alerting 
people to how things might get mapped, and how to make things clearer.  
Also "may still be useful" is not telling people to add e.g. 
"motor_vehicle=yes" to all primary roads (something unlikely to be useful).


> I do not agree with that statement. If highway 
> <https://wiki.openstreetmap.org/wiki/Key:highway>=path 
> <https://wiki.openstreetmap.org/wiki/Tag:highway%3Dpath> has the 
> default implied access values foot 
> <https://wiki.openstreetmap.org/wiki/Key:foot>=yes 
> <https://wiki.openstreetmap.org/wiki/Tag:foot%3Dyes> + bicycle 
> <https://wiki.openstreetmap.org/wiki/Key:bicycle>=yes 
> <https://wiki.openstreetmap.org/wiki/Tag:bicycle%3Dyes> (and 
> horse=yes) then that means that an armchair mapper should add 
> access=unknown to the tagging.
>
It doesn't matter what you think J Random Mapper _should_ do; what they 
_actually_ do is what is important (and I'm someone who uses 
access=unknown more than most).

Best Regards,

Andy



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