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The New Zealand Railways Magazine, Volume 11, Issue 6 (September 1, 1936)

Modern Sigualling Methods

Modern Sigualling Methods.

Fast train operation, and the efficient operation of terminals, depend to a marked degree upon suitable signalling installations. At Edinburgh (Waverley) station, the L. and N.E. line has recently installed the largest station power signalling plant introduced to date on this system. One of the biggest Home passenger stations, Waverley was opened forty-three years ago. It possesses fifteen bay platforms and four through platform tracks, as well as through passenger loops and carriage tracks. Under the new signalling plan, one central signal box replaces the former five boxes scattered about the station. The five old boxes contained 415 mechanical levers in all, while the new box has a 227-lever power frame. The whole of the new signalling apparatus is operated electrically, modern multi-unit colour light signals replacing the old semaphores. All points are equipped with 110 volt D.C. motors, and the complete layout track circuited, there being altogether 121 A.C. track circuits.