[Talk-GB] traffic island mapping / harmful detail?

Edward Catmur ecatmur at googlemail.com
Wed Mar 31 13:12:39 UTC 2021


On Wed, 31 Mar 2021 at 13:25, Colin Smale <colin.smale at xs4all.nl> wrote:

> This is fine for straight-across crossings with a simple island. What
> about a longer island, with staggered crossings, and independent traffic
> lights for the two halves? It may be only elongated by a couple of metres,
> but topologically speaking (relevant for routers/navigators, and don't
> forget the pedestrian's viewpoint is different to the driver's) very
> different. Maybe in this case it would be correct to split the way around
> the island. If so, what makes the difference? The stagger? The lights?
>

I'm not sure whether it's strictly valid, but one possibility would be to
have a (Z-shaped) crossing way that overlaps with a short section of road.
For the lights you could have 2 nodes, with direction=forwards/backwards.
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