The purpose of this standard is to provide the Australian rail industry with a set of mandatory and recommended requirements for the detection of all trains/rolling stock/rail vehicles to ensure that the signalling system receives reliable, accurate, sufficient and up-to-date information regarding the position and movement of all detectable trains/rolling stock/rail vehicles necessary for the safe control of the railway.This standard specifies the safety, functional, reliability, availability, maintainability requirements for any member or participant of the Australian rail industry that is involved in any phase of the life cycle (as per the structure of the standard) for train detection systems both rail based and on train.This standard applies to all heavy railways over 600mm track gauge.This standard provides the minimum requirements for the application design of train detection systems for both rail based and on train systems. It does not preclude the application of higher performance standards (e.g. based on local experience and good engineering practice which may be contained in the management of train detection systems standards, codes, guidelines and procedures of individual States or Rail Transport Operators).