[Tagging] Tagging Cycle Route Relations vs. Ways

[Seth Deegan]

The Cycle Routes Wiki Page
<https://wiki.openstreetmap.org/wiki/Cycle_routes#Tagging_cycle_route_networks>
states:
"It is preferred to tag the cycle routes using relations instead of tagging
the ways."

If I come across a route that has the Ways already tagged with the name
<https://wiki.openstreetmap.org/wiki/Key:name>=* of the route, can I delete
the name <https://wiki.openstreetmap.org/wiki/Key:name>=*s in the Ways and
just create a Route Relation with the name?

I assume this is not prefered because a number of applications use the
names in the Ways themselves and not the Route Relation, most notably
osm-carto.

However, some benefits of doing this might be:

   - Takes up less space in the DB
   - More tags that apply to the whole coute could be added to the Relation
   like surface <https://wiki.openstreetmap.org/wiki/Key:surface>=* and
   source <https://wiki.openstreetmap.org/wiki/Key:source>=* (like the
   official map of the route).
   - Ways with two or more routes wouldn't be tagged name
   <https://wiki.openstreetmap.org/wiki/Key:name>=route 1 & route 2
   <https://wiki.openstreetmap.org/w/index.php?title=Tag:name%3Droute_1_%26_route_2&action=edit&redlink=1>
and
   instead have their respective Relations. This could help with preferred
   routing/data usage in general.


I would propose that *all* routes and their names should be tagged in a
Relation and *never* the Ways, even if the Route Relation only has *one
member*.

This way data consumers know that all Routes are going to be relations.
Also future Routes mapped that share the Way of a Route that does not have
Relation, won't require the mapper to shift all of the data stored in the
Way to a new Relation.

Also, if Proposed features/Relation:street
<https://wiki.openstreetmap.org/wiki/Proposed_features/Relation:street> is
ever approved, this would help establish a consistent OSM-wide routing
standard.


*As for now*, I do not think that we should be deleting the name
<https://wiki.openstreetmap.org/wiki/Key:name>=*s of Ways. However, I think
osm-carto *should* render and *prefer* to render Relation names for Cycle
routes over the names of the Ways. The Editors should also somehow
influence users to map Relations for Cycle routes instead of naming them.


Thoughts?
Seth Deegan (lectrician1)
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