[Talk-GB] Public Rights of Way mapping guidance for Wiki

[Andy Townsend]

On 07/01/2021 09:32, Robert Whittaker (OSM lists) wrote:
> On Thu, 7 Jan 2021 at 08:42, Edward Bainton <bainton.ete at gmail.com> wrote:
>> I do wonder whether we need to have two keys: one for legal and one for physical.

(as other people have already said) we do - the access tags are for 
_legal_ access.  This occasionally can lead to confusion with mappers 
from jurisdictions where legal recording access is less important, and 
not just new mappers - see 
https://josm.openstreetmap.de/ticket/19862#ticket for an example of that.


>
> In the wiki, we have maxwidth:physical=* and
> maxheight:physical=*defined for just this issue with the maxwidth and
> maxheight tags:
> https://wiki.openstreetmap.org/wiki/Key:maxwidth:physical
> https://wiki.openstreetmap.org/wiki/Key:maxheight:physical
>
> Based on that, I've used e.g. foot:physical=* on occasion when I
> needed to tag the difference between the legal and actual
> accessibility of a route. There's 100 or so uses of foot:physical that
> in the UK, but I've no idea if any routers make use of it.
>
Thanks for that - that's a good answer to a question that I asked back 
in September:

https://lists.openstreetmap.org/pipermail/talk-gb/2020-September/025229.html

In some cases questions about physical access aren't quite so 
straightforward, and we have tags like surface / tracktype / smoothness 
/ sac_scale / mtb:scale / horse_scale etc. for those. These _are_ used 
by routers and renderers (to see how I use a tag for rendering at 
https://map.atownsend.org.uk search at 
https://taginfo.openstreetmap.org/projects/someoneelse_style#tags ; 
other projects that update taginfo can also be searched in the same way).

Best Regards,

Andy