Abstract:FAO (Fully Automatic Operation) system is the trend of the development of the railway vehicles around the world, through the analysis driverless metro system characteristic on the based on CBTC signal system, G0A4 level automatic driverless metro system has obvious advantages compared with traditional railway vehicles, high reliability, high security and maintainability. FAO system has been used, and it enhance emergency disposal of the operating system,and the level of automation, reducing the labor intensity. This paper go to clear up the FAO system design general principles, and analyzed the kinds of 11 typical scenario, collocated each subsystem of the FAO system.