rail traffic management system (ertms) is an initiative backed by the european union to enhance cross-border interoperability and the procurement of signalling equipment by creating a single europe-wide standard for train control and command systems.

its main components are the european train control system (etcs) and the gsm-r communications system.[1] etcs is a standard for track-train radio communications using balises (eurobalises) and associated in-cab train control,[2] while gsm-r is the gsm mobile communications standard for railway operations. ertms can oper