<div dir="ltr"><div>Hi,</div><div><br></div><div>The tag seems to largely belong to the early days of OSM. The majority of usage in the UK is an an area of Northamptonshire where User <a href="https://www.openstreetmap.org/user/Ben">Ben</a> was one of the first mappers to add a lot of detail in their local area.(around <a href="https://overpass-turbo.eu/s/1qc7">Towcester</a>). Elsewhere, it's been used a bit around Norwich and in the Lake District near Keswick, and for a <a href="https://www.openstreetmap.org/way/26541031">canal tunne</a>l.</div><div><br></div><div>On the whole I suspect it is a bit subjective as a tag, and originally pre-dated availability of any imagery. I'd probably prefer width as a tag as this can now be measured with reasonable accuracy (0.25-0.5 m) on a lot of aerial imagery. Other aspects which may add to the value as well as width are the nature of the highway corridor. A narrow asphalt road with grass verges is a different proposition from one with no verges and dry-stone walls on either side. <br></div><div><br></div><div>Jerry<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, 16 Jan 2023 at 08:08, Satoshi IIDA <<a href="mailto:nyampire@gmail.com">nyampire@gmail.com</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"><div dir="ltr">Hello.<br><br>I would like to know more about the tag "passing=*".<br>It seems that the tags passing=difficult and passing=caution seem to be commonly used in the UK, but I could find no documentation on the OSM wiki.<br><br><a href="https://taginfo.openstreetmap.org/keys/passing#values" target="_blank">https://taginfo.openstreetmap.org/keys/passing#values</a><br><br>I would like to know what their meaning of them is.<br>Would you happen to know anything about it?<br><br>## Background<br>I am a mapper, editing in Japan.<br>In the OSM, it is recommended to use `lanes=1` for these 1.5-lane ways.<br>However, this does not express that it is possible to pass each other.<br><br>Therefore, we would like to know more about the tag `passing=*`.<br>If values such as `passing=yes/no/others` are available, we think that roads with `lanes=1.5` in Japan could be replaced by tags such as the following.<br><br><a href="https://www.mapillary.com/app/?lat=35.455479836101&lng=137.4147767667&z=17&pKey=364117255720380&focus=photo" target="_blank">https://www.mapillary.com/app/?lat=35.455479836101&lng=137.4147767667&z=17&pKey=364117255720380&focus=photo</a><br> lanes=1<br> passing=yes<br> (width=5.8)<br> (width:lanes=3.1)<br> (oneway=no)<br><br><a href="https://www.mapillary.com/app/?lat=35.464347638202&lng=137.4251362123&z=17&pKey=393768719177067&focus=photo&x=0.4932036975244724&y=0.578707555164132&zoom=0" target="_blank">https://www.mapillary.com/app/?lat=35.464347638202&lng=137.4251362123&z=17&pKey=393768719177067&focus=photo&x=0.4932036975244724&y=0.578707555164132&zoom=0</a><br> lanes=1<br> passing=yes<br> passing:hgv=no<br> (width=4.4)<br> (width:lanes=3.6)<br> (oneway=no)<br><br>It seems the tags `passing=difficult` and `passing=caution` are already in use in the UK, but I could not find documentation about `passing=*` in the OSM wiki, so I am not sure in what situations it means.<br><br><a href="https://taginfo.openstreetmap.org/keys/passing#values" target="_blank">https://taginfo.openstreetmap.org/keys/passing#values</a><br><br>We would appreciate it if we could find out the situation of the tag being applied.<br><br><div>Best regards</div><div><br></div>-- <br><div dir="ltr">Satoshi IIDA<br>mail: <a href="mailto:nyampire@gmail.com" target="_blank">nyampire@gmail.com</a><br>twitter: @nyampire</div></div>
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