South korean experience in implementing radio-based train control systems

Over the past decade, the railways of the Republic of Korea have greatly evolved in terms of development of signalling systems. The South Korean engineers developed a national analogue of the European Train Control System ETCS/ERTMS Level 2 and carry out a phased transition from legacy traffic light signalling systems to automatic cab signalling and radio-based train control system. A set of studies on the possibility of implementing a broadband LTE radio communication system for critical applications of train control systems has been carried out in South Korea. The LTE-based radio communication system for railway applications (LTE-R) has been standardized at the national level based on results of tests, and sections equipped with the Korean KTCS-2, which uses the LTE-R system for critical data transmission, are being put into commercial operation. A long-term plan for the implementation of KTCS-2 on South Korean railways for the period up to 2029 is being realized to replace legacy signalling systems. The application of a 5G-based radio communication system is being tested.

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