> Differentiated tagging is needed for differentiated rendering. "junction" > vs "Signal". a single signal icon needs to be rendered in Japan for > intersections. >
But that is yet working perfectly with the current tagging! In Korea, we have yet thousands of nodes with junction=yes and name=*, and they are rendered just with their name (and without any icon) at osm.org. Example: http://www.openstreetmap.org/#map=17/37.48391/126.65874 In Japan, we have yet thousands of nodes with highway=traffic_signals and name=*, and they are rendered with their name together with the icon at osm.org. Example: http://www.openstreetmap.org/#map=17/34.43281/132.46446 (I know that the rendering style is not very “japanese”, but osm.org has worldwide coverage and has to render something that fits best at least a big part of the world. But this is a _rendering_ issue, not a _tagging_ issue.) There is only a problem when you have to tag complex junctions or traffic signal systems with dual carrigeways, because you want that the icon the the name show up only _once_ per junction/traffic signal system, and not _multiple_ times. That’s what is proposal is for. is there a way to tell the renderer to not render it's icon if it is part > of another area's way? that would allow the intersection tag to take over > for the rendering of the signals for it's single icon. > I guess you want to say that we have to supress the rendering of individual traffic signals (nodes with highway=traffic_signals) if these node are located within the area element that marks the traffic signal system as a hole. So we render only the area element and we get only _one_ icon and name per traffic signal system. Indeed that is exactly what is necessary, and I’ve made my proposal based on this assumption. I assumed that this is tecnically easy, but I’ll check this again… > if that's the case: > > landmark=intersection ? > Intersection=signals for Japan, intersection=junction for korea, or other > named junctions. > Again, I do not see the point in introducing here a new tag. Using the existing junction=yes in Korea and the existing highway=traffic_signals in Japan – just not only on nodes but extending it also also on closed ways (=areas) – should be fine.
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