Singapore MRT line logo
<a href="//commons.wikimedia.org/wiki/User:Glrx" title="User:Glrx">Glrx</a>
CC BY-SA 4.0
Own work based on: <a href="//commons.wikimedia.org/wiki/File:North_South_Line_logo.png" title="File:North South Line logo.png">North South Line logo.png</a>