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</o:shapelayout></xml><![endif]--></head><body lang=EN-AU link=blue vlink=purple style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal>change:lanes=* can represent that solid line. While that would implicitly define the inability to turn right, it can in addition be made explicit using a turn restriction relation with ways as via, specifically:<br><br><o:p></o:p></p><p class=MsoNormal>type=restriction<o:p></o:p></p><p class=MsoNormal>restriction=no_turn_right<br>from: <a href="https://www.openstreetmap.org/way/670700854">https://www.openstreetmap.org/way/670700854</a><o:p></o:p></p><p class=MsoNormal>via: <a href="https://www.openstreetmap.org/way/382839842">https://www.openstreetmap.org/way/382839842</a><o:p></o:p></p><p class=MsoNormal>via: <a href="https://www.openstreetmap.org/way/670682584">https://www.openstreetmap.org/way/670682584</a><o:p></o:p></p><p class=MsoNormal>via: <a href="https://www.openstreetmap.org/way/574613452">https://www.openstreetmap.org/way/574613452</a><o:p></o:p></p><p class=MsoNormal>via: <a href="https://www.openstreetmap.org/way/670674733">https://www.openstreetmap.org/way/670674733</a><o:p></o:p></p><p class=MsoNormal>via: <a href="https://www.openstreetmap.org/way/574613451">https://www.openstreetmap.org/way/574613451</a><o:p></o:p></p><p class=MsoNormal>to: <a href="https://www.openstreetmap.org/way/770019512">https://www.openstreetmap.org/way/770019512</a><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='mso-fareast-language:EN-AU'>From:</span></b><span lang=EN-US style='mso-fareast-language:EN-AU'> nwastra <nwastra@gmail.com> <br><b>Sent:</b> Friday, 4 March 2022 22:12<br><b>To:</b> iansteer@iinet.net.au<br><b>Cc:</b> talk-au@openstreetmap.org<br><b>Subject:</b> Re: [talk-au] "Don't split ways if there is no physical separation"<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>Here is the osm location<span style='mso-fareast-language:EN-AU'><o:p></o:p></span></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><a href="https://www.openstreetmap.org/#map=15/-31.9881/115.9857">https://www.openstreetmap.org/#map=15/-31.9881/115.9857</a><o:p></o:p></p></div><div><p class=MsoNormal><br><br><o:p></o:p></p><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal style='margin-bottom:12.0pt'>On 4 Mar 2022, at 9:59 pm, <a href="mailto:iansteer@iinet.net.au">iansteer@iinet.net.au</a> wrote:<o:p></o:p></p></blockquote></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal><span style='mso-fareast-language:EN-AU'><o:p></o:p></span></p><p class=MsoNormal>This query was triggered by the following comment in another thread, but I’ll start a new thread so as not to distract the original.<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>“ ’Don't split ways if there is no physical separation’ is one of the core tenets of highway mapping in OSM.”<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>My query is about how to correctly map an intersection in Perth while abiding by the above. I will try to describe the situation as best I can without being able to resort to a sketch:<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>- there is a junction between 2 major highways in Perth (Roe & Tonkin Highways)<o:p></o:p></p><p class=MsoNormal>- there is a slip road off one (Roe heading west) that merges with the 2 lanes of the other (Tonkin heading south)<o:p></o:p></p><p class=MsoNormal>- from the merge point there are 3 lanes (the slip lane + the 2 through lanes)<o:p></o:p></p><p class=MsoNormal>- from the merge point, there is no physical barrier down to the traffic lights at the next intersection (Hale Rd - which is quite close – hundreds of metres)<o:p></o:p></p><p class=MsoNormal>- however there is a solid white line between the slip lane and the 2 continuing lanes – right to the next intersection<o:p></o:p></p><p class=MsoNormal>- this means you cannot legally come off the slip lane and turn right at the next intersection (Hale Rd) because you cannot legally cross the solid white line<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>This has currently been mapped “as normal”, ie 1 slip lane joining a 2 lane road, becoming 3 lanes after the merge point.<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>Other than maintaining the slip road as a separate way right to the next intersection (with a no right turn), how else would this be mapped so people coming off the slip road cannot turn right at the next intersection?<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>Ian<o:p></o:p></p><p class=MsoNormal><span style='mso-fareast-language:EN-AU'>_______________________________________________<br>Talk-au mailing list<br><a href="mailto:Talk-au@openstreetmap.org">Talk-au@openstreetmap.org</a><br><a href="https://lists.openstreetmap.org/listinfo/talk-au">https://lists.openstreetmap.org/listinfo/talk-au</a><o:p></o:p></span></p></div></blockquote></div></body></html>