The cast plate on Truro signal box only dates from

1971 as prior to this it was named Truro East box. It's counterpart, Truro West was abolished leaving this box in control of all signalling in the Truro area. It's a Great Western Type 7A box that was opened in 1889. As well as signalling it also controls the level crossing in the foreground and the Falmouth Branch whereby trains operate under authority from tokens which are kept in interlocked machines on platform three and at Falmouth Docks station. This method of operation has been complicated in recent years following the opening of a passing loop at Penryn.