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<div><br></div><div><br></div><div><br></div><div>Mar 14, 2022, 06:07 by graemefitz1@gmail.com:<br></div><blockquote class="tutanota_quote" style="border-left: 1px solid #93A3B8; padding-left: 10px; margin-left: 5px;"><div dir="ltr"><div>How should they be mapped? By the amount of traffic they carry, or what?<br></div></div></blockquote><div dir="auto">Definitely no.<br></div><div dir="auto"><br></div><div dir="auto">highway=trunk/primary/secondary/tertiary/residential/unclassified/service/track<br></div><div dir="auto"> should be selected by their importance and role in road network.<br></div><div dir="auto"><br></div><div dir="auto">(highway=motorway/living_street/pedestrian are special roads)<br></div><div dir="auto"><br></div><div dir="auto">Note that highway=tertiary may carry a very different amount of vehicles in different<br></div><div dir="auto">cities.<br></div><div dir="auto"><br></div><div dir="auto">highway=tertiary in my city may carry more traffic than highway=trunk through<br></div><div dir="auto">Siberia or through a jungle<br></div><div dir="auto"><br></div><div dir="auto">Though official road classification, quality and amount of traffic are very likely to be<br></div><div dir="auto">correlated with road importance in a given area.<br></div><div dir="auto"><br></div><div dir="auto">But one should not assign highway=* values solely on road quality, amount of traffic<br></div><div dir="auto">or base it solely on official classification - almost always there will be some exceptions<br></div><div dir="auto">and this can work only on some limited area and completely fails when the<br></div><div dir="auto">same rule is applied worldwide (highway=trunk can be unpaved, some highway=residential<br></div><div dir="auto">are dual carriageways, there are paved highway=track etc)<br></div><div dir="auto"><br></div><div dir="auto">I opened <a href="https://www.openstreetmap.org/note/1985557">https://www.openstreetmap.org/note/1985557</a> because situation where<br></div><div dir="auto">every single road in a given area is tagged highway=secondary is very likely<br></div><div dir="auto">indicating problems.<br></div><div dir="auto"><br></div><div dir="auto">It is better now with some degraded to highway=tertiary but still seems overly<br></div><div dir="auto">inflated (but I never visited that place, that is why I opened note rather than<br></div><div dir="auto">editing).<br></div> </body>
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