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<div><br></div><div><br></div><div><br></div><div>21 Dec 2019, 01:09 by joseph.eisenberg@gmail.com:<br></div><blockquote class="tutanota_quote" style="border-left: 1px solid #93A3B8; padding-left: 10px; margin-left: 5px;"><div>Above it was said that the highway=trunk vs highway=primary<br></div><div>distinction is mostly for routing applications. But allowing a proper<br></div><div>rendering is also a main goal of the road tagging system.<br></div></blockquote><div>Yes, during my work on road display in<br></div><div>OSM Carto I really wished for consistent<br></div><div>use of highway=trunk as<br></div><div>"The most important roads on national<br></div><div>level, but not motorways".<br></div><div><br></div><div>I encountered some definitions of highway=trunk<br></div><div>describing this type of user,<br></div><div>but it is sadly not universally followed.<br></div><div><br></div><div>I think it would be desirable to use it this way,<br></div><div>rather than for tagging of "high performance<br></div><div>roads below motorway quality".</div><blockquote class="tutanota_quote" style="border-left: 1px solid #93A3B8; padding-left: 10px; margin-left: 5px;"><div>While it's true that road class is useful for routing when there are<br></div><div>two alterate routes, a main reason to tag highways with a certain<br></div><div>class is to be able to render maps properly at different zoom levels.<br></div><div><br></div><div>When you are making a high-scale, low-zoom-level map of a large area<br></div><div>(say, the whole State of Alaska, all of England, or all of Australia),<br></div><div>you will want to only render highway=motorway + highway=trunk, because<br></div><div>showing all highway=primary would lead to rendering many smaller roads<br></div><div>which are not reasonable to show at that scale in most places.<br></div></blockquote><div>+1</div> </body>
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