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The New Zealand Railways Magazine, Volume 13, Issue 5 (August 1, 1938)

Special Signalling System

Special Signalling System.

That is a brief description of the electrification system as apart from the rolling-stock, but, in addition to this part of the work, mention should be made of the special signalling system which has been installed. This system, designed by the Railway Department, presents a number of entirely original features. Full automatic working will be provided between Wellington and Johnsonville, the movement of the trains thus causing the points to operate at the various stations—depending upon the condition of the line. Arrangements are made whereby the points will not operate and allow a train to enter a single-line section unless that section is clear for it to do so, and the starting signal will not go toz page break page 23 clear until the points have operated. Provision is made whereby a train, having claimed a section, can be cancelled by a member of the train crew using a special key for the purpose, so as to enable an opposing train on the section in advance going forward to make its crossing instead of having to wait until the first train had gone forward to the next station.