[Tagging] traffic_sign:forward=*

Gerd Petermann GPetermann_muenchen at hotmail.com
Wed Nov 4 10:25:55 UTC 2015


Hi Martin,


I think you are mixing two things now. I talked about the "As part of a way" part, not the "On a way or area" part,

which looks even more weird to me.


Besides that: Yes, I also think that we should map a traffic_sign as a node with the position of the sign.


Gerd

________________________________
Von: Martin Koppenhoefer <dieterdreist at gmail.com>
Gesendet: Mittwoch, 4. November 2015 11:11
An: Tag discussion, strategy and related tools
Betreff: Re: [Tagging] traffic_sign:forward=*


2015-11-04 7:17 GMT+01:00 Georg Feddern <osm at bavarianmallet.de<mailto:osm at bavarianmallet.de>>:
If you read (and use) _only_ traffic_sign:forward - I suppose you read only the german wiki page and then I understand your problem, because that can not work in all cases.
If you read the english wiki page, you may understand the intention better - as there is also a traffic_sign:backward variant mentioned.

It shall work as in reality and as "computered" in the human mind:
Transform the information from the sign (node) to the way in the relevant direction - with all possibilities, but even all obstacles also ...

I do not support this "node on way" strategy - I use only the node beside way as tagging for the sign itself - and "always on the right side" ;-) - at least here in Germany.



Looks as if we agree that traffic signs are point objects at the side of a road, not linear stuff on a road. It doesn't make sense to have a traffic sign on a long part of a road, it is a point but can have effect for a linear piece of road (but then, it is not the traffic sign but the effect you want to map).

Browsing the history of the page, I have found out that the idea of adding the key to a way is to collect a list of traffic signs that are valid for this way. IMHO this doesn't make a lot of sense, because the idea of storing the traffic signs was that of being able to verify actual tagging on the way (e.g. see from where to where a maxspeed is valid and where it changes for sure), but this idea is put from the top to the bottom if you repeat the actual effects (which normally do have their own tags, e.g. maxspeed, overtaking, access-tags, etc.) with the traffic sign tag.

I propose to at least discourage the use of the traffic_sign key on ways, if not deprecate.

Cheers,
Martin
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