Advantages of the System.

Though the capital cost of this up-to-date signalling system may seem to outsiders somewhat unwarranted by the density of traffic in New Zealand, this criticism is fully met by the fact that the enterprise actually shows a dividend in the saving of signalling staff, the extra traffic facilities gained and the increased capacity of the lines. In addition the power supply line accompanying such systems provides facilities for working such additional appliances as may be required along the route in the near future, some of which, of great potential utility, are now past the experimental stage in the United States and elsewhere. The maintenance staff will not exceed that required for earlier systems (allowing for due expansion) when this system is sufficiently advanced for economical organisation, and present general maintenance men are fully trained in the new standards. The operation current consumption is also very low for light signalling, and the efficiency is such that the percentage of signal failures per thousand movements is negligible.