[Tagging] Tag ref on motorway_link

[Colin Smale]

Why make exceptions? Let's keep the rules as simple as possible (but not
simpler). Routes are always relations anyway, to allow ways to be part of
multiple routes.

Legislating that a motorway_link should never have a ref tag, is a rule
which is asking to be broken a million times. I try never to remove
(possibly correct) information from OSM. In the absence of guidance from
the wiki, what is "correct" is very subjective. I for one will never
remove an existing ref tag in order to make the slip road wiki-compliant.
If it contains the motorway ref and the wiki says it should be the
junction number then I might "correct" it. But it would be a step too far
to remove the information, which someone, somewhere may be relying on,
without it being available (and supported in tooling) via a different
route.

Colin


> On Tue, Oct 23, 2012 at 6:07 AM, Andrew Errington
> <erringtona at gmail.com>wrote:
>
>> On Tue, 23 Oct 2012 14:47:40 Martin Vonwald (imagic) wrote:
>> > Hi!
>> >
>> > I'm wondering what ref should be used on slip roads/ramps of a
>> motorway
>> > (not the junction node, but the way tagged with motorway_link). Up to
>> now
>> > I've seen: * the reference of the junction
>> > * the reference of the motorway
>> > * the reference of the junction not in the ref tag but in junction:ref
>> > * nothing (neither ref nor junction:ref)
>> >
>> > In the Wiki (English and German) I couldn't find an answer.
>> >
>> > Any opinions/comments/hints are welcome.
>>
>> I suggest 'nothing'
>>
>
> I agree.  Exception: If a route follows that highway, the route's ref,
> assuming the relation for that route doesn't exist yet.  In which it's
> probably better to create the relation if you have the time.
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