I frequently travel by train in the UK. Sometimes, a train will divide into two trains, usually for one smaller part to go to a local stop nearby, whilst the rest of the train carries on to the next stop and eventually the final destination.
I am deaf so I don't understand the announcement of the train drivers. Which carriage will be decoupled? Is there a general rule? I.e. Its always the last carriage to be decoupled, or the first. Is it random? I want to avoid having to ask every time.