[Tagging] Tram tracks running in a road

Luca Sigfrido Percich luca.percich at gmail.com
Sun Feb 8 23:02:15 UTC 2015

Hi all,

many thanks for all your feedback! It will take me a week to sort it all
out! :)

In Milano we already have (nearly) all the tram traks drawn as distinct
ways, so switching back to the "single way for highway and railway" model
wouldn't be a good option - it would mean losing detail.

I understand that drawing the road as a precise centerline and giving it
correct width tags has a value of its own and would allow us to dynamically
establish the relationship between roads and railway, not to mention a
better rendering and modeling.

But for the sake of "explicit is better than implicit" I still have the
impression that we should also use a tag or two for saying that there is a
tram track in a road.


2015-02-08 23:18 GMT+01:00 Janko Mihelić <janjko at gmail.com>:

> 2015-02-08 19:57 GMT+01:00 Jo <winfixit at gmail.com>:
>> I don't like to reuse the same ways for both railway and highway. The
>> shape of the railways follow smooth curves for obvious reasons, whereas
>> cars can make 90 degree turns. So I'll always keep using separate ways for
>> the tram rails. One for each direction of travel. And a way in the middle
>> (on the straight parts) for the highway. An exception to that are dual
>> carriageways, with the rails embedded, but usually the rails are between
>> the carriageways in that case.
> I agree, railway=tram should be separate. Tags on the highway only
> describe lanes, they do not represent the railway. Tag
> tram:lanes:forward=no|designated only says that the outer lane has a
> railway track on it.
> Janko Mihelić
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