"Steer" wrote:
I have been trying to find the accepted practise for mapping traffic lights where dual carriageways interest. There is much discussion on various sites, but most seems to be a bit old, and I’m not convinced I’ve found what is the latest accepted practise.
I checked some intersections in Melbourne’s CBD, and the method I saw that I liked and thought the best was where there were 4 lights at the intersection, but they were not placed on the intersecting modes, but one node back “upstream” on each way. I think this is good because no matter which way you go through the intersection, you only pass one set of lights (rather than 2 if they were placed on the actual intersecting nodes).
Any comments?
I have always entered such traffic lights on dual carriageways in the way you describe. This is because: 1. The "traffic light count" along a section of road is then accurate, and 2. It's the accurate representation of what's on the ground. It lets us convey the significance of the stop lines associated with the lights. That's something we can't do with two-way traffic without compromising point 1. I have argued this position on previous occasions. John _______________________________________________ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
