[Tagging] Traffic sign relevant direction: relation type:enforcement vs. direction=* vs. traffic_signals:direction=*

Kevin Kenny kevin.b.kenny+osm at gmail.com
Thu Mar 30 12:01:50 UTC 2017

On 03/30/2017 07:43 AM, Paul Johnson wrote:
> On Mon, Mar 27, 2017 at 9:21 AM, Kevin Kenny 
> <kevin.b.kenny+osm at gmail.com <mailto:kevin.b.kenny+osm at gmail.com>> wrote:
>     Obviously, if we are using the node for other purposes, we may
>     need to disambiguate with stop:direction=* or
>     give_way:direction=*, just as we do with other ambiguously-named tags.
>     I'm having a hard time picturing any case where this couldn't
>     work. It doesn't involve measuring distances to intersections,
>     trying to divine from a sign placement beside a way what it means
>     for traffic on the way, or any other weird preprocessing.
> Well, every instance where the restriction only applies to one 
> direction, because nodes lack direction.
Yes. Nodes lack direction. Ways do have direction. Traffic arrives at a 
node along a way. 'direction=*' indicates that the restriction applies 
to any way arriving at the node in the given direction, relative to the 
way it arrived on.

Did you even read what I wrote earlier?

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