The SMART-CS is unparalleled for its ergonomics and safety levels, enabling to work under live overhead catenary system and with the next track open to traffic. Unlike other exisisting systems, the UNAC SMART-CS is an ultimate system entirely designed for the use on the rail tracks. For instance, the system is capable to calculate all booms angle in order to automatically and in real-time define the height limit for the booms so that the machine could be used in optimal conditions under catenary or under civil engineering structure.