To add to the ambiguity of what physically separate means I'll highlight
the roudabout joining Wonga Road and Oban Road:
https://www.openstreetmap.org/edit#map=19/-37.79463/145.24154
Here the separation between lanes is similar to a long thin speed hump -
you can drive over it, but it is a physical bump to discourage people
from cutting corners:
https://www.mapillary.com/app/?lat=-37.794785108333&lng=145.24219080806&z=17&pKey=303763387865756&focus=photo
To make it even more confusing these raised humps don't extend the full
distance of the approach, and they could be mapped as a mix of two
separate ways, and a two lane way just before the roundabout - but this
would be getting too pedantic and I can see no benefit of doing so.
Personally, I'm less concerned about how these ambiguous cases are
mapped - whatever we decide you will always be able to find an middle
case that could be mapped either way.
What is more important is getting the obviously wrong (see other thread)
turning lanes fixed. I suspect a lot of the problem here is that id and
the standard OSM render don't visually show lane tags. It is easy to
visually map separate lanes as separate ways which then looks "good" -
even though this is wrong by OSM standards.
Regards,
Kim
On 5/3/22 10:46, Luke Stewart wrote:
There are many situations in Australia where you are permitted to
cross an unbroken white line (for instance, moving to a special
purpose lane). The wiki is pretty unambiguous, "where traffic flows
are physically separated by a barrier (e.g., grass, concrete, steel),
which prevents movements between said flows". Emergency vehicles are
an obvious class where crossing legal barriers such as lines on the
road is perfectly fine.
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