Here is the osm location https://www.openstreetmap.org/#map=15/-31.9881/115.9857
> On 4 Mar 2022, at 9:59 pm, ianst...@iinet.net.au wrote: > > > 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. > > “ ’Don't split ways if there is no physical separation’ is one of the core > tenets of highway mapping in OSM.” > > 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: > > - there is a junction between 2 major highways in Perth (Roe & Tonkin > Highways) > - there is a slip road off one (Roe heading west) that merges with the 2 > lanes of the other (Tonkin heading south) > - from the merge point there are 3 lanes (the slip lane + the 2 through lanes) > - 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) > - however there is a solid white line between the slip lane and the 2 > continuing lanes – right to the next intersection > - 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 > > This has currently been mapped “as normal”, ie 1 slip lane joining a 2 lane > road, becoming 3 lanes after the merge point. > > 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? > > Ian > _______________________________________________ > Talk-au mailing list > Talk-au@openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk-au
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