<div dir="ltr"><div dir="ltr">I regularly get QA messages about this when I use the "ImproveOSM" in iD - just about every roundabout near me has at least one.</div><div dir="ltr"><br></div><div dir="ltr">I've been marking them as false positives as to my mind it's obvious that you wouldn't U-turn there (but equally, it would be legal to do so).</div><div dir="ltr"><br></div><div dir="ltr">But the points about machine routing make me think maybe I shouldn't be closing these off? Any thoughts?<br><div><br></div><div>Eg, at node <a href="https://www.openstreetmap.org/node/26187838">https://www.openstreetmap.org/node/26187838</a></div><div><br></div><div><div class="gmail-qa-header" style="margin:0px;padding:0px;border:1px solid rgb(204,204,204);font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:12px;line-height:inherit;font-family:ui-sans-serif,-apple-system,system-ui,"Segoe UI",Roboto,Oxygen,Ubuntu,Cantarell,"Fira Sans","Droid Sans","Helvetica Neue",Arial,sans-serif;vertical-align:baseline;box-sizing:border-box;background-color:rgb(246,246,246);border-radius:5px;display:flex;color:rgb(51,51,51)"><div class="gmail-qa-header-label" style="margin:0px;padding:0px 15px;border:0px;font-style:inherit;font-variant:inherit;font-weight:bold;font-stretch:inherit;font-size:14px;line-height:inherit;font-family:inherit;vertical-align:baseline;box-sizing:border-box;border-radius:0px 5px 5px 0px">Missing Turn Restriction</div></div><div class="error-details gmail-qa-details-container" style="margin:20px 0px 0px;padding:10px;border:1px solid rgb(204,204,204);font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:12px;line-height:inherit;font-family:ui-sans-serif,-apple-system,system-ui,"Segoe UI",Roboto,Oxygen,Ubuntu,Cantarell,"Fira Sans","Droid Sans","Helvetica Neue",Arial,sans-serif;vertical-align:baseline;box-sizing:border-box;background:rgb(236,236,236);border-radius:4px;display:flex;color:rgb(51,51,51)"><div class="gmail-qa-details-subsection" style="margin:0px;padding:0px;border:0px;font:inherit;vertical-align:baseline;box-sizing:border-box"><h4 style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-stretch:inherit;line-height:inherit;font-family:inherit;vertical-align:baseline;box-sizing:border-box">Description</h4><div class="gmail-qa-details-description-text" style="margin:0px;padding:0px;border:0px;font:inherit;vertical-align:baseline;box-sizing:border-box">0 of 326 recorded trips (travelling west) make a turn from <a class="error_entity_link" style="margin:0px;padding:0px;border:0px;font:inherit;vertical-align:baseline;box-sizing:border-box;color:rgb(112,146,255)">Bretton Gate</a> to <a class="error_entity_link" style="margin:0px;padding:0px;border:0px;font:inherit;vertical-align:baseline;box-sizing:border-box;color:rgb(112,146,255)">Bretton Gate</a> at <a class="error_object_link" style="margin:0px;padding:0px;border:0px;font:inherit;vertical-align:baseline;box-sizing:border-box;color:rgb(112,146,255)">this node</a>. There may be a missing "no_right_turn" restriction.</div></div></div></div><div><br></div><div><div class="gmail-qa-header" style="margin:0px;padding:0px;border:1px solid rgb(204,204,204);font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:12px;line-height:inherit;font-family:ui-sans-serif,-apple-system,system-ui,"Segoe UI",Roboto,Oxygen,Ubuntu,Cantarell,"Fira Sans","Droid Sans","Helvetica Neue",Arial,sans-serif;vertical-align:baseline;box-sizing:border-box;background-color:rgb(246,246,246);border-radius:5px;display:flex;color:rgb(51,51,51)"><div class="gmail-qa-header-label" style="margin:0px;padding:0px 15px;border:0px;font-style:inherit;font-variant:inherit;font-weight:bold;font-stretch:inherit;font-size:14px;line-height:inherit;font-family:inherit;vertical-align:baseline;box-sizing:border-box;border-radius:0px 5px 5px 0px"><br></div></div></div></div><div class="gmail_quote"><div dir="ltr" class="gmail_attr"><br></div><div dir="ltr" class="gmail_attr"><br></div><div dir="ltr" class="gmail_attr">On Sat, 3 Oct 2020 at 20:01, James Derrick <<a href="mailto:lists@jamesderrick.org">lists@jamesderrick.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi Dave,<br>
<br>
Thanks for answering my original router logic question! :-)<br>
<br>
<br>
On 03/10/2020 17:52, Dave F via Talk-GB wrote:<br>
> I've just tested in JOSM. It flagged no such validation warning.<br>
> <a href="https://www.openstreetmap.org/way/3403352" rel="noreferrer" target="_blank">https://www.openstreetmap.org/way/3403352</a><br>
<br>
Interesting - you're right, I couldn't easily reproduce the 'Sharp <br>
Angle' validation warning in the latest JOSM either.<br>
<br>
After hunting out the code, the warning currently isn't triggered unless <br>
the segment leading to a <45deg angle is <10m:<br>
<a href="https://josm.openstreetmap.de/browser/josm/trunk/src/org/openstreetmap/josm/data/validation/tests/SharpAngles.java" rel="noreferrer" target="_blank">https://josm.openstreetmap.de/browser/josm/trunk/src/org/openstreetmap/josm/data/validation/tests/SharpAngles.java</a><br>
<br>
Looking at a couple of local roundabouts via imagery, a flare this short <br>
verges on a single node highway=mini_roundabout, unless lots of extra <br>
nodes have been added to the flare to give a curved approach.<br>
<br>
After over a dozen years of using JOSM, it still surprises me with extra <br>
features.<br>
<br>
Happy Mapping,<br>
<br>
<br>
James<br>
-- <br>
James Derrick<br>
<a href="mailto:lists@jamesderrick.org" target="_blank">lists@jamesderrick.org</a>, Cramlington, England<br>
I wouldn't be a volunteer if you paid me...<br>
<a href="https://www.openstreetmap.org/user/James%20Derrick" rel="noreferrer" target="_blank">https://www.openstreetmap.org/user/James%20Derrick</a><br>
<br>
<br>
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</blockquote></div></div>