Suggest 'from', 'to' and 'via' only for public transport routes

[urbalazs]

Describe the bug Currently, iD editor suggests from, via and to for all type=route + route=* relations. However, these keys are useful only for public transport routes and recreational routes where there are separate relations for A -> B and B -> A. For other route types there are only one relation for the route (with possible forward and backward roles of the members).

See:

• https://wiki.openstreetmap.org/wiki/Key:from
• https://wiki.openstreetmap.org/wiki/Key:via
• https://wiki.openstreetmap.org/wiki/Key:to

To Reproduce

1. Add a new relation.
2. Select road route.
3. See the preset.

Expected behavior Bi-directional routes should not have from, via and to fields.

[1ec5]

For other route types there are only one relation for the route (with possible forward and backward roles of the members).

Highway route relations in some countries are routinely modeled as separate relations per direction or per leg. from and to are sometimes the only possibility for distinguishing route relations that represent different legs of the same route. In other cases, these keys are a structured alternative to setting name to a description.

[urbalazs]

Based on Taginfo there is 2X more usage of wikidata and wikipedia and 5X more usage of distance. Why are from, via and to in a preset where these keys are filled only in 4.2% of all route=road relations?

[1ec5]

The Road Route preset also includes fields for wikidata, wikipedia, and distance.

If there is a consensus that from, via, and to cannot appear on road routes in some countries, the field can be conditional on the country where it is located, just as the Direction field only appears in three countries (but probably should be added to a few more).