SSC

Driving Support System

The Driving Support System (SSC) is state-of-the-art in Automatic Train Protection systems designed to enhance the safety of the railway.

SSC is the new ATP system developed by RFI for non-electrified lines not subject to interoperability.

When developing this system particular attention was paid to product and installation costs, by means of introducing the advanced microwave transponder, for the first time in railway signalling and safety systems.

The Driving Support System (SSC) is represents the state-of-the-art in Automatic Train Protection systems designed to enhance the safety of the railway. The system consists of a Trackside Subsystem (SST) and an Onboard Subsystem (SSB).

The trackside equipment transfers information to the train about the characteristics of the infrastructure and the aspects of the signals.

The Driving Support System (SSC) is state-of-the-art in Automatic Train Protection systems designed to enhance the safety of the railway

Once the on-board equipment has received this information, it checks that the train is being driven correctly otherwise the emergency brakes will be applied to bring the train to a standstill.

The transfer of information between the trackside sub-system and the onboard sub-system takes place via a microwave link, at a frequency 6 Ghz. Information (telegrams) about the infrastructure and the signal aspects is transferred to the train via Information Points consisting of an encoder and a transponder. The aspect of the signals is acquired directly from the signals using electrical cables.

According to the signal aspect the encoder selects the relevant telegram. The transponder then modulates the telegram and transmits it to the on-board subsystem. The on-board logic acquires the telegram via the receiving antenna. On the basis of information obtained and train speed, the on-board system processes speed curves based on the signalling scheme, which are updated in real time on the basis of which the correct conduct by the driver of the train is verified.