[Talk-GB] Advice please: Goat tracks in mountain areas

[Chris Hodges]

Bicycle=no is probably correct on access land in Wales when not a PRoW.  
I'm not  a horse rider but 
https://www.gov.uk/right-of-way-open-access-land/use-your-right-to-roam 
says horse=no would also be a good assumption

One of the reasons I stopped using Strava for (mainly bike) routing is 
that it routes along all sorts of unsuitable stuff - things that should 
be clear from the tags.  It would take bikes down public footpaths if 
the tags weren't perfect (for some proprietary definition of "perfect"). 
So they've got form for this.  I don't know if they pick up 
tracktype/surface/sac_scale, but I'm pretty certain they either ignore 
mtb:scale or assume 0 if not filled in.

Chris


On 05/02/2022 15:04, David Woolley wrote:
> On 05/02/2022 14:26, Gruff Owen wrote:
>>
>> It has been tagged as:
>> bicycle:no
>> highway:path
>> horse:no
>>
>
> What would initially concern me is that bicycle=no and horse=no 
> probably represent the mapper's view of its suitability, and are 
> therefore very subjective, which is wrong.
>
> Not mapping it would be wrong.  The correct way is to provide 
> attributes, e.g tracktype=Grade 5; surface=ground; width=70cm; 
> smoothness=horrible; sac_scale=difficult_mountain_hiking, that allow a 
> router to make its own judgements (although some of these could also 
> be considered too subjective).  I'm not sure though, to what extent 
> routers actually look for such contraindications, but there is a 
> principle that you do not tag for the renderer, which means it is the 
> router's job to assess suitability and one must not try to influence 
> it by misdescriptions.
>
> Pyg Trail, to which this path is attached, is classified as 
> sac_scale=mountain_hiking, in OSM, which is the second least onerous. 
> The description for sac_scale says that paper maps often do not 
> include paths with the most onerous values.
>
> Total omission doesn't work, if the feature is visible, because people 
> will, eventually, remap it.
>
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