After a fatal accident near Bath towards the end of 2018, Great Western Railway stuck new warning signs in its rapidly shrinking 'slam door' Mark 3 coaches the following year. Red notices above and below each window read 'Danger. Never place any part of your body out of the window until train is at the platform'. A further 'Please close the window' sign was placed on the window operating bar. This is Trailer Standard 42570.
<a href="//commons.wikimedia.org/wiki/User:Geof_Sheppard" title="User:Geof Sheppard">Geof Sheppard</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>