Systems engineering framework for railway control & safety systems

Traditional railway signalling and control systems have been based on fixed block train separation and lineside signals to control the movement of trains and to avoid collisions. This has historically led to a segregation of the functionalities of sub-systems such as signalling, rolling stock and control centres, with the development and delivery of each subsystem being developed and delivered with a very narrow, sequential and design-based approach that relies on a very sequential approach based on previous designs and technology..