Hi Mike,

Am 18.10.2016 um 03:52 schrieb Mike Boos:
> Along on-road sections, the dedicated rail right-of-way moves from
> centre-running to the outsides of the street at certain intersections. (A
> by-product of some of the political compromises in route choices.) Does
> anyone know of any examples of tracks going from the centre to the side of
> the road with traffic lanes in OSM? I expect these are going to look messy.

Look at any German, Austrian or Swiss city of your choice where every
tram track is mapped as a single way in OSM (i.e. no tracks=2). I need
more details (show us photos) to give a useful answer.

> There are also portions of the line that will share track with a freight
> corridor. From what I can tell, convention appears to be to tag it with the
> heavier mode, i.e. railway=rail instead of railway=light_rail. However, the
> use of the track for freight is quite small - at most one freight train
> to/from Elmira uses the track at night, when light rail service won't be
> operating. Should the track still be marked as 'rail' instead of
> 'light_rail,' or should we attempt to have the tags represent the dominant
> use? (At present, some of these are tagged as railway=construction, even
> though the freight train has been consistently using it overnight. This
> section is also largely complete.)

Yes. If the track is still usable for freight trains (even if limited to
certain hours), it is a normal railway track and therefore gets
railway=rail. What you describe is called "Karlsuhe model" – don't
confuse it with our tagging scheme at OSM. ;-)

I assume, that some people of Grand River Transit have visited the
German cities Karlsruhe and/or Kassel. :-) The first one has been
operating a tram-train system for more than 40 years.


Tag the tracks as they look like. Sections where tracks share space with
cars [1] are railway=tram. Where the trams are physically separated from
the traffic [2], it's a railway=light_rail. That's how tagging works in
cities which only have *one* tram/light rail system. If the city has two
or three (low-floor tram and high-floor light rail; some German cities),
it becomes more difficult because we also try to get the systems
distinguishable (there are use cases). But that is not important now and
the reason why Germans discuss correct tagging of trams, light rails and
subways at their OSM Forum over multiple pages and threads. :-)

> Further, there is gauntlet track to allow freight trains to pass station
> platforms. Do we tag the track closest to the platform as
> railway=light_rail and the outer track as railway=rail? There's some
> discussion here on gauntlet tracks here that suggests this is the case in
> Europe: http://forum.openstreetmap.org/viewtopic.php?id=29131

It is the case in Kaufungen near the city of Kassel which has a
Karlsruhe-like tram-train system ("Regiotram").


Yes, the track for heavy trains is a normal train track (railway=rail)
while the outer ones can only be used by light rail vehicles due to the
smaller structure gauge. Therefore the light rail track gets
railway=light_rail. Because we map one way per track at the centerline
of the track, there are two (in Kaufungen three) parallel tracks and all
get railway:interlaced=yes. This is useful for routing engines.

If there were up to date Mapillary photos, I could give more and better
advice. (Mapillary photos by pedestrians are better because are located
on the sidewalk)

Greetings from Karlsruhe



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