Safety-related data transmission for railway signalling and control

The latest development of safety-related data transmission for railway signaling and control systems is discussed. The new system has been developed according to the requirements of the European Train Control System (ETCS). The system is installed with a programmable control system, called an interlocking that ensures that commands authorizing the train to move, or moving points, to set a route for the movement of the train are sent safely. It also emphasizes on the integration of the data transmission systems, to ensure that incorrect, outdated, and misrouted messages are prevented from reaching the train, or the lineside equipment. The new system is also integrated with the Radio Block Center (RBC), to manage the transmission of significant information to the train. The functions of the on-board train control and data transmission system are performed by a high-integrity processor unit.