[Tagging] rail routes and stations (rail question 1)

[Tijmen Stam]

On 10-05-17 18:58, Bjoern Hassler wrote:
> Hi all,
>
> I've got the following question for clarification. Suppose you have a
> relation: osm:relation:route
> <https://wiki.openstreetmap.org/wiki/relation:route> (type=route,
> route=train/...), with nodes as stops.
>
> (1) The wiki says that the node in this relation ("as stop")
> representing a stop would be tagged as osm:tag:railway=stop
> <https://wiki.openstreetmap.org/wiki/Tag:railway%3Dstop> / osm:tag:public_transport=stop_position
> <https://wiki.openstreetmap.org/wiki/Tag:public_transport%3Dstop_position>.
> So far so good.
>
> (2) The wiki also says that alternatively, the node ("as stop")  could
> be a station (railway=station).
>
> I assume that option (2) would be mainly for very small stations or
> stations that have not been mapped? For larger stations, the station and
> the stop position would be separate, and one would include the stop node
> (1) in the relation, while the station is separate?
>
> The background to the question is that on the London underground, many
> stops (i.e. nodes in route relations wth role "stop") are tagged as
> station, see http://overpass-turbo.eu/s/oXF. Sometimes there are two
> station tags as well (marking the stop for either direction).
>
> Do you agree that (e.g. where station buildings etc have been mapped),
> the stop position should be tagged as (1), while the node tagged
> railway=station should be merged into the relation for the station or
> stop area?

I agree with you (and Martin).

In my view, a fully mapped (simple) station should have a 
railway=station node, and a public_transport=platform and 
public_transport=stop_postion per platform/track.

Then a stop_area relation which contains all stop_positions and 
platforms, and the railway=station node.

The routes themselves contain only one stop_position/platform pair.

Tijmen