[Tagging] Low Emission Zones

Philip Barnes phil at trigpoint.me.uk
Tue Mar 23 19:20:40 UTC 2021

On Tue, 2021-03-23 at 16:01 +0100, Marc_marc wrote:
> Le 23.03.21 à 15:07, Dave F via Tagging a écrit :
> > Hi
> > 
> > There is a boundary tag for various restrictions on motor vehicle
> > entering a city:
> > 
> > https://wiki.openstreetmap.org/wiki/Tag:boundary=low_emission_zone
> > 
> > This is fine to give a general indication of its layout, but there
> > appears to be no tags for nodes on the highways.
> > 
> > How are sat-nav routers aware of such a restriction?
> > 
> > Would highway=low_emission_zone work?
> if you want to map the traffic sign, traffic_sign=low_emission_zone
> if you want to map a kind of "barrier" for high emission vehicle,
Its not just an issue for High Emission vehicles, they often require a
permit which for non-residents can be difficult or time consuming to
obtain at short notice. 

This is usually no more a specification check (Paris for example), i.e.
was the car resistered after a certain date and hence conform to Euro
xx emissions standard.

> I'm not sure if it's useful to create a key on all shared nodes
> between
> the zone and the road.
> but if the zone is not in osm or if the sign (sometimes placed at the
> previous intersection) is not at the same place as the beginning of
> the
> zone, it could make sense.
> there should probably be an access restriction, because this also
> exists
> for parking spaces
> https://www.openstreetmap.org/node/8226356159
> https://wiki.openstreetmap.org/wiki/Talk:Key:access#electric_vehicles
Possibly tag roads withing the zone, in a similar way to weight limits
and other restrictions.

Phil (trigpoint)

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