[talk-au] Fwd: Editing road geometry Australia

[Warin]

On 11/01/19 19:51, John Berkers wrote:
> Long time lurker, some time editor.
>
> It is my understanding that marked "turn right only lanes" are not 
> cause to create divergent ways.  These should be tagged using the 
> "lanes" key as per https://wiki.openstreetmap.org/wiki/Key:lanes
>
> Creating divergent ways is considered "Tagging for the renderer" as 
> the documented separation is not physically there.

I disagree. But then I could be wrong.
In the second (Canberra) example:
Where a solid line exists between the two groups of lanes there is a 
'legal barrier' that you cannot legally cross between the two groups of 
lanes (2 go right and 2 continues
  straight on).
Using the tag lanes does not convey this 'legal barrier'.
Also using the tag lanes how can the turn restrictions that exist be 
tagged, the right 2 must turn right and the left 2 must go straight on ?
>
> The first one, in WA, appears less of an issue to me. Perhaps the 
> separation nodes could be closer to where the ways actually diverge, 
> somewhere around the mid-point of the dashed lines, rather than at the 
> start of them.
>
> The second one, near Canberra, has clearly diverged ways most of the 
> way along the bridge.
>
> This intersection in Melbourne could potentially serve as an example:
>
> https://www.openstreetmap.org/#map=18/-37.93265/145.15653
>
> Where there are actual medians between lanes, the ways separate, 
> otherwise, they do not.
>
> Hope I haven't spoken out of turn.  The views expressed above are my 
> understanding of the guidelines with respect to mapping what is 
> actually there.
>
> Regards,
>
> JohnB
>
>
>
> On Fri, Jan 11, 2019 at 6:15 PM Graeme Fitzpatrick 
> <graemefitz1 at gmail.com <mailto:graemefitz1 at gmail.com>> wrote:
>
>     Resend to include list :-(
>
>     Thanks
>
>     Graeme
>
>
>     ---------- Forwarded message ---------
>     From: *Graeme Fitzpatrick* <graemefitz1 at gmail.com
>     <mailto:graemefitz1 at gmail.com>>
>     Date: Fri, 11 Jan 2019 at 17:12
>     Subject: Re: [talk-au] Editing road geometry Australia
>     To: Petra Rajka - (p) <petra.rajka at telenav.com
>     <mailto:petra.rajka at telenav.com>>
>
>
>
>     On Fri, 11 Jan 2019 at 16:19, Petra Rajka - (p)
>     <petra.rajka at telenav.com <mailto:petra.rajka at telenav.com>> wrote:
>
>         Hi everyone,
>
>         I’m Petra and I am part of the mapping team at Telenav.
>
>         Since January we started to work on road geometry in Canberra,
>         Perth and Melbourne and we came across some intersections
>         where roads (turn lanes) are mapped separately even where
>         there is no physical divider or chevron markings.
>
>
>     Sorry, Petra, but you've got me, at least, a bit confused?
>
>     https://www.openstreetmap.org/edit#map=20/-32.09137/116.01315
>     certainly appears to show traffic islands (better view with Esri
>     Clarity)
>
>     https://www.openstreetmap.org/edit#map=18/-35.34078/149.16289 has
>     marked "turn right only" lanes.
>
>     Sorry, can't see a problem with either of them, unless you're
>     looking at something I'm not seeing? :-)
>
>     Thanks
>
>     Graeme
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