Klaus-Gerd Giesen<p><a href="https://chaos.social/tags/Biketooter" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Biketooter</span></a> :When planning a <a href="https://chaos.social/tags/bike" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>bike</span></a> <a href="https://chaos.social/tags/route" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>route</span></a> with <a href="https://chaos.social/tags/FOSS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>FOSS</span></a> and <a href="https://chaos.social/tags/OSM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>OSM</span></a> based <a href="https://chaos.social/tags/routing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>routing</span></a> engines, such as <a href="https://chaos.social/tags/Brouter" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Brouter</span></a> / <a href="https://chaos.social/tags/Bikerouter" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Bikerouter</span></a> ,the result analysis frequently shows some <a href="https://chaos.social/tags/surface" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>surface</span></a> percentage as "unknown". I guess that's because the <a href="https://chaos.social/tags/information" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>information</span></a> is missing in the <a href="https://chaos.social/tags/OpenstreetMap" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>OpenstreetMap</span></a> <a href="https://chaos.social/tags/database" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>database</span></a> .However, when I upload the same track as <a href="https://chaos.social/tags/GPX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>GPX</span></a> into a <a href="https://chaos.social/tags/commercial" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>commercial</span></a> <a href="https://chaos.social/tags/biking" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>biking</span></a> application, such as <a href="https://chaos.social/tags/Komoot" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Komoot</span></a> or <a href="https://chaos.social/tags/Cyclers" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Cyclers</span></a> ,the "unknown" has disappeared, while they are also based on OSM. How come?</p>