[Tagging] Deprecating mini_roundabout

[Paul Allen]

On Thu, 24 Oct 2019 at 23:42, Paul Johnson <baloo at ursamundi.org> wrote:

>
> I hate to be a stick in the mud, but whether or not it's legally
> traversable doesn't seem to have much bearing on whether or not it's
> physically traversable.
>

If it's not physically traversable then it IS illegal to drive over it.
Take your pick of traffic
violations, starting with "driving without due care and attention."

If it is physically traversable then it MAY still be illegal to drive over
it, or MAY be illegal
to drive over it unless your vehicle is above a certain length (the latter
is the case for UK
mini roundabouts).

Why do I say legality matters more than physical appearance?  Turn-by-turn
navigation
systems and the consequences of our mapping encouraging people to break the
law.

Before I'm accused of ignoring the rest of the world, it's possible we may
need other
classes of circular junction in addition to rotaries, roundabouts and mini
roundabouts,
but those are all I know of so far.  The traffic regulations concerning
them are different, so
we should not map them identically.  Nor should we hope that routers have
adequate
heuristics to distinguish between roundabouts and mini roundabouts based
upon
size, as what the router thinks and what the signage/regulations say may
differ.

-- 
Paul
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