On Wed, 2017-05-10 at 19:15 +0200, Colin Smale wrote:
> Just to add a dimension... At many stations in NL and UK at least,
> trains of different lengths stop at different places along the
> platform, roughly so the middle of the train is by the exit. So this
> will need multiple stop positions on each platform. These are signed
> for the train driver.
>
>
Or the exit is at the back of the train in the case of my local
station, but I'm just being pedantic there.
The main issue with stop positions is that they cannot be associated
with a route, the position will depend on which platform the train is
routed through and the length of the train. The best OSM can do is
route to the station and then its look at, or wait for, the information
boards.
Phil (trigpoint)
>
> On 2017-05-10 18:59, Bjoern Hassler wrote:
>
> > Hello again,
> >
> > In an osm:relation:route (type=route, route=train/...), you have
> > both platforms and stop positions. How is a particular platform
> > associated with a stop that serves it?
> >
> > E.g. for public transport routing, you'd walk (highway=footway) to
> > a platform (public_transport=platform), at which point you'd change
> > to a train stopping at a stop (public_transport=stop_position). How
> > would the routing algorithm know that the platform is associated
> > with the stop?
> >
> > Is there an existing mechanism or convention, e.g. a tag on the
> > platform that indicates the stop, or both tagged with the same name
> > or similar?
> >
> > Thanks!
> > Bjoern
> >
> > PS I've noticed that sometimes the stop position is at the far end
> > of a platform (i.e. the two stop positions are at opposite ends of
> > the station). Maybe that's so that an association can be made?
> >
> >
> >
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