[Tagging] Tram tracks running in a road

Jo winfixit at gmail.com
Fri Feb 6 18:26:21 UTC 2015

Ciao Luca,

For an example of a road with many variations in how the tram tracks are
embedded, you can have a look at this stretch I mapped a few months ago:


To indicate how they belong together, maybe a street or associatedStreet
relation makes sense?


2015-02-06 17:29 GMT+01:00 Luca Sigfrido Percich <luca.percich at gmail.com>:

> Hi all,
> first time I write to the list (after lurking for a while), so I introduce
> myself. I am from Milano - Italy, I work for the municipality's agency for
> environment and mobility, and we'we been working for the last months to
> integrate our road graph with OSM.
> Currently in Milano all tram tracks are mapped separately, so they are all
> oneway and no way has both highway=* and railway=tram tags (apart from some
> cases we're correcting).
> Now, we would like to store the information wether a certain railway track
> runs in a road sharing the same space with motor vehicles.
> I am referring to situations similar to this one:
> http://wiki.openstreetmap.org/wiki/File:Tram_Amadeo.jpg
> Which is here on the map:
> https://www.openstreetmap.org/#map=19/45.470987/9.236118
> I searched the wiki for a tagging or relation scheme, but found none.
> I was thinking about a simple tagging scheme: tram=yes|forward|backward
> for the highway, and road=yes for the railway.
> From the previous example (the picture points at the opposite direction of
> the highway on which it was taken:
> For the center way (road):
> tram=yes (it's on both directions)
> and on the two railways:
> road=yes (the track lies on a road used by motor vehicles)
> We could also user a lanes modifier:
> lanes=3
> lanes:backward=2
> tram:lanes:backward=yes|no
> tram:forward=yes
> The tram tag should not be used for tracks which run separated from the
> road (they are tagged with railway=tram).
> The tram tag should go along with access tags, as we have lanes reserved
> for trams and buses/taxis:
> http://wiki.openstreetmap.org/wiki/File:Tram_xxii_marzo.jpg
> So the center way (carriageway reserved to psv with two tram tracks in
> shared space) would get tagged as:
> access=no
> bus=yes
> taxi=yes
> tram=yes
> We could also think about a relation, type=tram_on_road, it could be
> useful for sorting things out in complex multi-carriageway situations like
> this one:
> https://www.openstreetmap.org/#map=19/45.49833/9.19607
> but would also be more difficult for users to mantain and for clients to
> consume.
> Any suggestions / impressions?
> Thanks!
> Sig
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