In several discussions around EMC problems, international standards on several industry fields are to being decided in the viewpoints of measurement and human effects. In these situations, railway technologies are not excluded but electromagnetic field radiated by railway is widely distributed and changed with complexity. Therefore, it is not easy for railway technologies to adapt EMC standard (IEC 62236) directly. This paper mainly describes the magnetic field radiation status in new transportation systems and related EMC subjects. And at the present stage, we describe how influences are to be taken considerations in these standards.