This reminds me a bit of this location, also in Wiltshire:

https://www.mapthepaths.org.uk/?lat=51.06209564615185&lon=-2.0421791551466137&zoom=3&mode=0

Note the orange diagonal line. That is the line of a bridleway according to the 
Wiltshire ROW data as sourced on rowmaps.com (so not necessarily the definitive 
map). Contrast that to the brown line a bit to its north and west which is the 
bridleway as mapped on OSM, using bridleway signs apparent on the ground plus a 
bit of assumption. The brown line is a well-defined and easily-navigable (on 
horse and bike as well as foot) track, but there are no actual bridleway signs 
on the bit which diverges from the orange  line so it 'may not' be an actual 
bridleway - even though ground evidence suggests it 'probably' is. I first 
mapped this in 2010 from a ground survey,, but lacking any legal source for it 
not being a bridleway, it's remained an OSM bridleway ever since even though 
part of it technically isn't.

The orange line is a random line across a field with no evidence on the ground 
whatsoever. No signs, no gates, no stiles, no nothing - and therefore not 
mappable.

Wiltshire seems to be like this quite often, incidentally: its signposting can 
be a bit inconsistent and I've noticed quite a few divergences between 
web-based council data and ground evidence. We need the definitive data to be 
legally used in OSM in these cases; though maybe the council should really be 
trying to actually divert the path to the on-the-ground route that people 
actually use!

Nick


________________________________
From: nathan case <[email protected]>
Sent: 08 December 2020 15:11
To: [email protected] <[email protected]>
Subject: Re: [Talk-GB] Bridleway across field

That's a fair viewpoint and I'm open to changing my method.

But what would you suggest in the situation where a PROW runs through a 
building(s)? Map through it as a fully-fledged footway? Doesn't matter what 
your abilities are, you won't be able to go through there - well unless you can 
pass through walls...  At what point does a completely inaccessible, or even 
re-rerouted path (just not in the PROW data), become disused?

I am interested as a path I recently mapped is a PROW but is very dangerous to 
cross. It is now marked as disused:highway=path with 
access=discourged;designated but it is stilla PROW (byway open to all traffic 
in this case): https://www.openstreetmap.org/changeset/93427676

-----Original Message-----
From: Dave F via Talk-GB <[email protected]>
Sent: Tuesday, December 8, 2020 2:10 PM
To: [email protected]
Subject: Re: [Talk-GB] Bridleway across field

On 08/12/2020 12:36, nathan case wrote:
> but instead setting as disused:highway. This is what I tend to do when the 
> PROW route is clearly inaccessible from aerial imagery (e.g. due to new 
> buildings, or rivers).

IMO, this is bad mapping.
Just because one person concludes it isn't used by staring at photograph taken 
thousands of feet in the air doesn't mean it isn't.

Accessibility is variable & subjective. What might be a deterrent to a 
wheelchair user, could be considered easy by a high jumper.

Even if it is found to be inaccessible after an on ground survey it doesn't 
mean it's been declared disused.

DaveF

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