The Chicago Metra commuter rail system.  Map created by <a href="https://en.wikipedia.org/wiki/User:A435(m)" class="extiw" title="en:User:A435(m)">A435(m)</a>.  Attribution required for all uses.
&lt;aristophanes2000@hotmail.com&gt; made this image. As long as you retain this notice you can do whatever you want with this image, except. If we meet some day, and you think this image is worth it, you can buy me a beer in return.
<a href="//commons.wikimedia.org/w/index.php?title=User:S3raph&amp;action=edit&amp;redlink=1" class="new" title="User:S3raph (page does not exist)">User:S3raph</a>,<a href="//commons.wikimedia.org/w/index.php?title=User:RedWordSmith&amp;action=edit&amp;redlink=1" class="new" title="User:RedWordSmith (page does not exist)">User:RedWordSmith</a>,<a href="//commons.wikimedia.org/w/index.php?title=User:A435(m)&amp;action=edit&amp;redlink=1" class="new" title="User:A435(m) (page does not exist)">User:A435(m)</a>
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Wikipedia in english