OpenStreetMap -    ,<br>
   ,<br>
     <br>
    .<br>
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: <a href=http://www.openstreetmap.org>http://www.openstreetmap.org</a>
Highlighting the number of tracks in railway=tracks. Note that it is generally considered preferable to create a way for each track in which case a twin track line will be shown as two parallel way with tracks=1 rather than one way with tracks=2.
<img src="003.png">