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<div class="moz-cite-prefix">On 21/12/2019 11:40, Mateusz Konieczny
wrote:<br>
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<blockquote type="cite" cite="mid:LwcFXBA--3-2@tutanota.com">
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<div>21 Dec 2019, 12:00 by <a class="moz-txt-link-abbreviated" href="mailto:wolfgang@lyxys.ka.sub.org">wolfgang@lyxys.ka.sub.org</a>:</div>
<blockquote class="tutanota_quote" style="border-left: 1px solid
#93A3B8; padding-left: 10px; margin-left: 5px;">
<div>I suggest to keep the road classification consistent at
least within<br>
</div>
<div>a country and try to solve the problem of roads in low-zoom
maps at<br>
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<div>the rendering level, by modifying the list of displayed
road classes<br>
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<div>until a target density of displayed roads is reached. That
might<br>
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<div>become easier to do when we move to vector tiles.<br>
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</blockquote>
<div>Seems not doable with OSM data - this<br>
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<div>would require far more road classes<br>
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<div>than we use.<br>
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<div><br>
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<div>lane and surface data is also almost<br>
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<div>certainly not helpful here even with full<br>
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<div>coverage<br>
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<br>
</blockquote>
<p>Renderers can certainly use tags other than "highway" when
deciding what road class to render things as (I do that in a
couple places in maps for UK/IE but not for trunk/primary, but if
I was creating maps for the US I suspect I'd definitely try and
use other tags along with the highway tag to influence road class
at motorway/trunk/primary as well).</p>
<p>Specifically, if a tertiary is particular narrow it gets rendered
as unclassified, and if an unclassified or residential is a gravel
track it gets rendered as a track with public access.
Specifically:<br>
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<p><a class="moz-txt-link-freetext" href="https://github.com/SomeoneElseOSM/SomeoneElse-style/blob/master/style.lua#L928">https://github.com/SomeoneElseOSM/SomeoneElse-style/blob/master/style.lua#L928</a></p>
<p><a class="moz-txt-link-freetext" href="https://github.com/SomeoneElseOSM/SomeoneElse-style/blob/master/style.lua#L421">https://github.com/SomeoneElseOSM/SomeoneElse-style/blob/master/style.lua#L421</a></p>
<p>The "invented highway tags" set there are then used by</p>
<p><a class="moz-txt-link-freetext" href="https://github.com/SomeoneElseOSM/openstreetmap-carto-AJT/blob/master/roads.mss">https://github.com/SomeoneElseOSM/openstreetmap-carto-AJT/blob/master/roads.mss</a><br>
</p>
<p>Best Regards,</p>
<p>Andy</p>
<p><br>
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