[Talk-GB] Changing highway=ford to ford=yes.

Dave F davefoxfac63 at btinternet.com
Sun Jan 6 16:28:16 UTC 2019

On 06/01/2019 15:50, Edward Catmur wrote:
> It would seem a bit much to map the ford as an area unless both the 
> river and the highway away from the ford are mapped as areas. For the 
> same reason I wouldn't usually map a ford as a way unless the river is 
> mapped as an area.
> Apropos of not much, I wonder whether the ford is relevant for 
> water-based routing along the river. Perhaps to canoes and hovercraft...

There are quite a few highways that have streams of water running along 
them, used by walkers, bike riders as well as motor vehicles. This is 
where ford=yes as a way is appropriate, as indicated on the wiki.

> In any case the point where the highway intersects the thalweg should 
> be tagged with something to indicate that it is not in error. That is, 
> where a highway and a river cross there should either be a node tagged 
> as a ford, or either the river or the highway should be tagged as 
> bridge or tunnel (and there should be no node at the intersection).
> With regard to the automated edit, I'd like to know:
> - does this fix or solve anything (ie for data consumers), or is it 
> just to make data consistent?

Both. The 'standard' map doesn't render highway=ford. Constancy avoids 
confusion, making things easier to comprehend, & reduces errors.

> - what are you doing to nodes that have both highway=ford and ford=*?
removing highway=ford, as they're all nodes.

> - what are you going to do to prevent more highway=ford nodes being 
> created in future?

Nothing, other than what's already in place.
I've not checked all editors but highway=ford default was removed from 
Potlatch & never included in iD (I believe). JOSM flags it as a 
'deprecated tag' error message on upload. And wiki is clear.

However, contributors (especially newbies) copy tags they see others 
have already added, assuming it's correct practice. Removing abandoned 
tags will greatly reduce the likelihood of them returning.


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