Steam [cathcart Circle Lines] Train 2n13 Is Unable To Enter Glasgow Central.

Train 2N13 encounters a traffic jam and a semaphore continuously indicating a stop signal just before entering Glasgow Central station. The tracks are blocked by the Class 158 train in front, which is apparently stuck.

 

What semophore are you talking about your attachment only shows colour light signals not semaphores which have mechanical arms

 

Have you tried going into the 2D map and deleting the conflicting train?

Also as Sophie states, in UK railways terminology a “semaphore” refers to a mechanical signal with an arm. Cathcart is entirely colour light signalled.