&gt; AFAIK It&#x27;s the lack of a human making the close doors &#x2F; start moving decision that leads to need for platform doors.<p>There is no such <i>need</i>. Lyon&#x27;s line D has been running fully automatic since 1992 without platform doors[0], the only major accident has been a drunk falling <i>on</i> the train having jumped from a mezzanine.<p>[0] <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=ubdJ35NBrbE" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=ubdJ35NBrbE</a>