During 2016 the main platforms at Glasgow Queen Street were closed as the tunnel and lines were prepared for electric services. Trains were diverted, mostly to the low level platforms on the North Clyde Line. A one-way system operated here for passengers as indicated by these signs in the middle of the closed concourse. Perhaps if similar signs had been visible by the entrances to the low level platforms then the ScotRail staff would have less cause to shout at passengers trying to enter via the temporary exits?
<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>