“…58 It was created to replace the individual train control and command systems across Europe, providing interoperability for di®erent countries and manufacturers leading to an increase in the e±ciency of tra±c of both passenger and freight trains and the competitiveness of the European railway. 5,55,[59][60][61][62] The realization of interoperability is a precondition for other bene¯ts of ERTMS, such as improved tra±c management, optimized usage of energy and network resource, 63 enhanced pro¯tability, and customer service, with a contribution to overall environmental and energy e±ciency objectives. 59 Besides these, higher levels of safety for high-speed trains with only a few minutes headway between trains, ensured operational reliability and more tra±c within the same infrastructure À À À i.e., better capacity utilization, reduction of maintenance costs, 5,58,[63][64][65][66][67] and the creation of a common market of signaling equipment that also leads to reduction of costs, 58,59,65 are enabled.…”