<div dir="ltr"><div dir="ltr">On Sun, May 29, 2022 at 10:32 AM Mateusz Konieczny via Tagging <<a href="mailto:tagging@openstreetmap.org">tagging@openstreetmap.org</a>> wrote:<br></div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<div dir="auto">(1)<br></div><div dir="auto">Let say that we have crossing with lane with following signage:<br></div><div dir="auto"><br></div><div dir="auto">- left arrow on left lane<br></div><div dir="auto">- straight arrow forward on center lane<br></div><div dir="auto">- straight arrow forward on right lane<br></div><div dir="auto"><br></div><div dir="auto">You are nevertheless allowed to also turn right from the right lane.<br></div><div dir="auto">And make also u-turns from the left lane.<br></div><div dir="auto"><br></div><div dir="auto">How turn:lanes should be tagged in this case?<br></div><div dir="auto">I am asking as <a href="https://wiki.openstreetmap.org/wiki/Key:turn" target="_blank">https://wiki.openstreetmap.org/wiki/Key:turn</a> seems to<br></div><div dir="auto">be suggesting that actual allowed turns should be ignored<br></div><div dir="auto">and only what is signed matters and want to confirm this.<br></div> </div>
</blockquote><div><br></div><div>Use best judgement. Tag what the lanes actually do. There's decent major chunks of pretty much every country's highway system where there are lanes but they're not signed and while the lanes are painted, what they explicitly do isn't. I'd still explicitly tag what humans can see implicitly within context, for the same reasons why we don't abbreviate names; computers tend to need the context spelled out for them to give effective results. </div></div></div>