[Tagging] Deprecating mini_roundabout

[Florian Lohoff]

On Wed, Oct 23, 2019 at 09:24:30AM +0000, Philip Barnes wrote:
> On Wednesday, 23 October 2019, Jez Nicholson wrote:
> > So, for those who like definitions: In the UK, a "mini roundabout" is
> > simply a small roundabout that is either flush to the road or slightly
> > raised so that large/long vehicles are able drive over it if they need to.
> > If it has anything on it, like a lamp post, it is a "roundabout". It is not
> > the size, it is the being able to drive over it that matters
> > https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/561491/mini-roundabouts-report.pdf
> >
> There is also the rule that you should not do U turns at mini roundabouts, so it is important that mapping retains this important distinction.
> 
> These are a very common feature, it does seem odd that routers are not supporting them.

The point is that a mini roundabout does need a LOT of preprocessing to
put it into some graph for your classical A* or Dijkstra. You need to
eliminate the node and replace it with a circular road much like a
junction.

Flo
-- 
Florian Lohoff                                                 f at zz.de
        UTF-8 Test: The 🐈 ran after a 🐁, but the 🐁 ran away
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