A diagram of a new DLR B07/09 stock. The roundel is fair use as there is no free version available to properly illustrate the train livery.
<a href="//commons.wikimedia.org/w/index.php?title=User:Unisouth&amp;action=edit&amp;redlink=1" class="new" title="User:Unisouth (page does not exist)">Unisouth</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>