A general point to all:
Please don't confuse a way's name with a route's name. They are different. There can be multiple routes traversing over the same way.


On 28/03/2020 21:56, Richard Fairhurst wrote:

Sure. NCN 4 is called "NCN 4" in the same sense that the M4 is called the
"M4". That's fine - plenty of people refer to it that way. But OSM
convention, dating back 15ish years, is that in situations like this, you
put the number in the ref alone. The M4 just has ref=M4, not name=M4.

However the authority responsible for naming conventions of entities, such roads or routes (ie Highways England/Sustrans/Whoever), wishes to name them, then that is how they should be tagged in OSM. Even if it  includes what OSM perceives as a reference. OSM contributors don't have the authority to usurp that. The 'OSM convention' you mention is irrelevant - we map 'ground truth'.

If  HE wanted to name a section of the M4 'The bit of the M4 between junctions 14 & 15' then that's what it would be.

There's a similar situation in Britain where some think creating an OSM specific referencing system for public rights of way is the best situation. However inventing, what is in effect a unique language, makes it very difficult to communicate efficiently about the paths.

There are of course plenty of NCN routes which do have names. NCN 8 is Lon
Las Cymru. NCN 68 is the Pennine Cycleway. NCN 4 west of the Severn Bridge
is the Celtic Trail. NCN 1 from Newcastle to Edinburgh is Coast & Castles.

The Celtic Trail isn't the name of NCN 4. it's another route which happens to coincide (mostly) with a couple of NCN routes. From Sustran's blurb "The Celtic Trail is made up of two routes - NCN 4 & NCN 47".

The rest are similar, I believe.


(It's a side-issue, but Sustrans doesn't really have a consistent way of
referring to route numbers: you'll hear Sustrans staff refer to "Route 5" or
"NCN 5" or "National Cycle Network Route 5" or "National Route 5". I was at
a video conference with Sustrans staff earlier this week and heard several
variations. :) ).

Go with publications not chitter chatter over the phone.

DaveF

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