BR SOUTHERN REGION AND RAILWAY STANDARD WIRING DIAGRAMS

DICK THE SIGNALS HERITAGE SIGNALLING AND TRANSPORT PICTURES COLLECTION



NS FOR THE BR SR STANDARD RELAY INTERLOCKING CIRCUIT

CLICK ON THE LEVER FRAME FOR THE BR SOUTHERN REGION `YELLOW BOOK` CIRCUITS, ie TYPICAL CIRCUITS WITH EXPLANATIONS FOR THE BR SR STANDARD RELAY INTERLOCKING CIRCUITS

CLICK ON THE GROUND FRAME FOR A SET OF SOUTHERN RAILWAY STANDARD WIRING DIAGRAMS AND SYMBOLS