[Tagging] [RFC] Feature Proposal - EV Charging Station Mapping

Mateusz Konieczny matkoniecz at tutanota.com
Fri Mar 31 06:18:17 UTC 2023




Mar 31, 2023, 01:53 by ajt1047 at gmail.com:

> On 30/03/2023 18:13, NKA mapper wrote:
>
>> tor. 30. mar. 2023 kl. 18:14 skrev Andy Townsend          <>> ajt1047 at gmail.com>> >:
>>
>>>
>>> How do I know if an "amenity=charging_station" in the                OSM data is a "single charge point" or a "group of                chargers"?
>>>
>>>
>> The intention is to not have a difference. Both a single            charger location and a multi-charger location is a place            where you could charge your vehicle, and the proposal is to            map them the same way. This is similar to a fuel station,            where I would tag one single pump, typically at a rural            location, as amenity=fuel. 
>>
>
> That would be a problem, as trying to use the same tag for      different physical objects always is in OSM.  If I
>
>
>
>
> gis=> select count(*) from [some database table] where amenity      = 'charging_station';
>   count
>  -------
>     267
>  (1 row)
>
>
>
>
> How do I know what I am counting?  How do I count just "single      charge points"?  How do I count "groups of chargers"
>
>
You are counting distinct charger points, some of them may have single charge point
with capacity for one car (may be tagged capacity=1), some may be single charge
point with capacity for more cars (may be tagged capacity=2 or something), some may be
groups of two charge points and so on.

Note that currently you also can get both "30 charger points, each as own object"
and "single station mapped once" so situation will get better, not worse.

>> Of course tags like capacity and socket would give            indications.
>>
>
> If tagged, but plenty exist without those: > https://overpass-turbo.eu/s/1ta8
>
>
Yes, problem exists also now anyway.

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>> And if amenity=charging_station is tagged as an area            around a number of charge points, that would be a group.
>>
>
> That'd need to be a spatially-aware query, and I wouldn't assume      that data consumers can easily do that.  At the place where I      detect charging stations I don't have that capability: > https://github.com/SomeoneElseOSM/SomeoneElse-style/blob/master/style.lua#L1492>  .
>
>
> If the same tag must be used for both, the only way to tell      "single charge point" from "group of chargers" is to have a tag      that is set to indicate which is which.  If "newtag=single" it      means it's a single charge point, if "newtag=group" it's a group,      and if "newtag" is not set, we don't yet know, and need to      encourage local mappers to add the tag.
>
>
I guess that can be useful.

How you distinguish "marks group of chargers" and "marks single charger within
group of chargers" now?

Is it "ideally proposal would introduce this ability" or "proposal breaks existing ability"?
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