[Tagging] agglomération

Jo winfixit at gmail.com
Fri Nov 23 18:50:30 GMT 2012

What I'm doing right now is tag the roads inside this zone with

maxspeed=50 and

This doesn't fit entirely, as it doesn't only influence maxspeed. Maybe
adding a tag city_limit=yes would be more appropriate?

Besides there is a conflict when inside those city limits there is a
zone30. I'm tagging those with

maxspeed=30 and

The zone30 also has some extra consequences, besides maxspeed though. Would
it be more correct to use zone30=yes? We also have zone50 and zone70.

I have been tagging the location of city_limit signs for several years now,
but since we didn't have a tag for it, I simply used note=city limit or
bebouwde kom (nl). I hope a proper way of tagging them will come from this


2012/11/23 A.Pirard.Papou <A.Pirard.Papou at gmail.com>

>  On 2012-11-22 16:57, Simone Saviolo wrote :
> 2012/11/21 A.Pirard.Papou <A.Pirard.Papou at gmail.com>
>>  Hi,
>> I wanted to map the agglomeration of my village and I am wondering again.
>> [...]
>  How do we tag agglomérations?
>  Currently, with place=* and their relative info on a closed way. I have
> written a proposal which aims to change this tagging scheme: [1]
>  However, on a second thought, what you talk about is probably a
> different concept. An agglomération has precise entry and exit points,
> marked by the city limit sign - in Italy it's the same. I know that many
> mappers don't want to have this defined by a polygon, arguing that this
> would force consumers to do a spatial query to understand what the speed
> limit is; however, the legal constraint also involves other restrictions
> (e.g., no honking), and a dedicated tag would work better in this sense.
> Hello everybody,
> According to my explanation (well, my government's definition), an
> agglomération is just a set of roads and hence not an area nor a
> multipolygon (there's no speed limit or parking restrictions in the meadows
> ;-)) but, as I stated it, a plain relation. Yet, for larger cities (without
> meadows ;-)) a multipolygon could be used to gather already made subareas
> the day OSM will go recursing (nesting), but what's outside the roads is
> undecided.
> The idea is that with a 30 driving rules list applying to an agglomération
> (some 10 practically), you'd better have a global idea of where it spans
> (e.g. highlight all its roads), entry/exit you speak of, rather than ask
> yourself and OSM the question for every new street you traverse.
> As well as for exceeding the speed limit, you can be booked in
> agglomérations for parking partly on the roadside, or on the wrong
> alternated side, not letting a bus leave its stop point, etc...
> Should there be a country-dependent agglomération tag, should the driving
> rules  be tagged one by one and should they be tagged on every road or on a
> relation?
> Finally, should we try to tag everything or rather go and swim or play
> tennis?
> Cheers,
>   André.
> [1] http://wiki.openstreetmap.org/wiki/Proposed_features/Urban_settlements
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