[Talk-GB] Ground truth v legal truth

Philip Barnes phil at trigpoint.me.uk
Fri Jul 19 17:49:51 UTC 2019

On Fri, 2019-07-19 at 07:06 -0700, Richard Fairhurst wrote:
> Tom Hughes wrote:
> > That doesn't follow - in the UK we have always (with very rare
> > exceptions like Oxford High Street) mapped secondary, primary 
> > and trunk to the official status of the road.
> It's slightly more nuanced than that - we have always mapped
> secondary,
> primary and trunk to the _observable_ official status of the road.
> Where a road isn't signposted with that status, we don't have a
> strong
> precedent. There is at least one such road which has been
> highway=tertiary
> since 2009. It is not signposted as the A*** on the ground - indeed,
> traffic
> for the A*** is expressly signed another way - but legally it is the
> A***.
> And no I'm not going to say where it is or some Sabristo[1] will come
> along
> and "fix" it.
> Philip's example is the same: I know the road he's talking about and
> it
> isn't signposted as the A****, it's signposted only for the little
> suburb
> along it. There is a very definite decision there on the part of the
> highways authority to not treat it as an A road.
> I don't have a simple answer, but I am tempted by the logic that
> where the
> highways authority has clearly made a decision not to signpost a road
> as (in
> OSM terms) secondary, primary or trunk, we should follow suit and tag
> something like highway=tertiary, designation=primary, ref=A***.
Thank you for your comments Richard.

Using a designation tag in these cases would make a lot of sense. 

We should certainly not be undermining hard pressed local authorities
who are doing their best to improve the quality of life of their

Phil (trigpoint)

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