[OSM-newbies] Traffic lights and crsooings

[Toni Erdmann]

David James wrote:
> Newbies seems like the correct list for this question ...
> 
> In a UK context, how (or more accurately where) should I tag traffic_signals?
> 
> Consider a simple traffic-light controlled cross-roads (two roads
> intersecting at right-angles, all four approaches to the junction
> controlled by traffic lights).
> 
> I started off by having a node at the junction and tagging that node with
> highway=traffic_signals.
> 
> Then I started wondering if I should really be placing a node on each of
> the 4 approach ways just before the junction and tagging those nodes with
> highway=traffic_signals. That's what is really happening on the ground,
> though I'm not convinced I can measure the placement accurately enough.
> 
> What really got me thinking about this was when I started wondering about
> what to do when the traffic lights incorporate pedestrian lights as well.
> Now I need a node on each of the four approaching ways that is tagged as
> highway=crossing, and it should be the same node as the one tagged
> highway=traffic_signals if putting the traffic_signals on each approaching
> way.
> 
> What's the standard practice?
> 

Hi David,

I don't know the common practice. I tag the node at the junction
(normally). But if streets with more than 1 lane per direction
cross, I place a separate node in the middle of the junction and
tag this one.

I considered the outcoming image as the main target.
The traffic signals appeare in Osmarender at zoom=17.
And at this zoom level, more than one icon would be too
much and too dense.

Regards,
Toni