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    copied!<p>If one doesn't mind a few false positives the following Overpass API script gets road intersections out of OpenStreetMap data pretty easily:</p> <p><a href="http://overpass-turbo.eu/s/QD" rel="nofollow noreferrer">http://overpass-turbo.eu/s/QD</a></p> <p>(the script can't detect false intersections – where only two lines meet, though, e.g. when a road is represented by multiple way objects in the OSM data)</p> <p><em>In case that the script goes offline a more readable version directly here:</em></p> <ul> <li>Dependent on which kind of ways you are interested in, add the types of ways which should not count as intersection to the <em>regv</em> attribute (at two script sections). The type of ways can be found here: <a href="https://wiki.openstreetmap.org/wiki/Key:highway" rel="nofollow noreferrer">highway tags</a>.</li> <li>The BoundingBox is the part of the map you are viewing on the Overpass-tourbo Website.</li> </ul> <p><strong>Sample Script:</strong></p> <pre><code>&lt;!-- Only select the type of ways you are interested in --&gt; &lt;query type="way" into="relevant_ways"&gt; &lt;has-kv k="highway"/&gt; &lt;has-kv k="highway" modv="not" regv="footway|cycleway|path|service|track"/&gt; &lt;bbox-query {{bbox}}/&gt; &lt;/query&gt; &lt;!-- Now find all intersection nodes for each way independently --&gt; &lt;foreach from="relevant_ways" into="this_way"&gt; &lt;!-- Get all ways which are linked to this way --&gt; &lt;recurse from="this_way" type="way-node" into="this_ways_nodes"/&gt; &lt;recurse from="this_ways_nodes" type="node-way" into="linked_ways"/&gt; &lt;!-- Again, only select the ways you are interested in, see beginning --&gt; &lt;query type="way" into="linked_ways"&gt; &lt;item set="linked_ways"/&gt; &lt;has-kv k="highway"/&gt; &lt;has-kv k="highway" modv="not" regv="footway|cycleway|path|service|track"/&gt; &lt;/query&gt; &lt;!-- Get all linked ways without the current way --&gt; &lt;difference into="linked_ways_only"&gt; &lt;item set="linked_ways"/&gt; &lt;item set="this_way"/&gt; &lt;/difference&gt; &lt;recurse from="linked_ways_only" type="way-node" into="linked_ways_only_nodes"/&gt; &lt;!-- Return all intersection nodes --&gt; &lt;query type="node"&gt; &lt;item set="linked_ways_only_nodes"/&gt; &lt;item set="this_ways_nodes"/&gt; &lt;/query&gt; &lt;print/&gt; &lt;/foreach&gt; </code></pre>
 

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