SIG4 Engineering is particularly pleased to contribute to the development of the safety case required for the new signaling system on the Marseille-Ventimiglia line.

The SIG4 Engineering teams are working closely with ALSTOM (St Ouen) to design and specify the future ‘NExTEO’ CBTC system to be installed on lines B & D of the Paris RER.

The work carried out by SIG4 engineers consists of analysing the requirements expressed by the customer (RATP and SNCF), then translating them into technical solutions to enable the development of a new CBTC system that integrates all the requested functionalities and guarantees passenger safety.

The specific features of this project are as follows: it involves GoA-2 (driver-operated) operation on a territory shared between SNCF and RATP. The rolling stock is recent (RER-NG and MI20) and is equipped with several signalling systems: CBTC NExTEO, but also KVB, ETCS, and others. The challenge is to reconcile the progress made possible by the use of CBTC technology with the strong desire not to disrupt the historical habits of drivers on these lines.

SIG4 is delighted to be contributing to this superb project alongside the ALSTOM teams.

SIG4 Engineering collaborates with experts from Prover on “Integral Formal Proof” activities implemented and supported by RATP.

SIG4 Engineering is involved alongside ALSTOM in the modernization of the railway network in the city of Perth, Australia.