[Tagging] traffic lights

Anthony osm at inbox.org
Tue Sep 6 15:45:43 BST 2011


On Mon, Sep 5, 2011 at 7:43 PM, Stephen Hope <slhope at gmail.com> wrote:
> Having said that, I do have some questions about marking in detail
>
> Should we use different tags for "this whole intersections has lights"
> and "there are lights in this exact spot". My first instinct is to say
> yes, so that data users can easily search for one or the other.  You
> could say that any lights not on a way are one, and lights on a way
> are the other, but what about overhead signals that hang over the
> centre of the way/intersection?
>
> Is there a problem with marking an intersection both ways?

Yes.  The problem is that an intersection is not a single point.

http://maps.google.com/maps?q=van+dyke+and+north+dale+mabry,+tampa&hl=en&ll=28.127814,-82.502552&spn=0.0007,0.000603&sll=28.0725,-82.548614&sspn=0.015847,0.01929&vpsrc=6&t=h&z=21

http://www.openstreetmap.org/?lat=28.127645&lon=-82.502359&zoom=18&layers=M



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