BGS - SIL 4 Safety signalling system

Made in France

A SIL4 safety generic basis for railway signalling application

Do you need to develop a new railway signalling system ?

Our BGS solution is what you are looking for:

  • A SIL 4 certified (by Certifer) generic material and software support
  • All our in-house resources are committed to design your application while respecting costs, deadlines and safety standards.

 Download the BGS booklet

 Download the BGS Data sheet

 Download the PMGI Application booklet

Watch an overview of the second BGS application, RailMap :


Safety signalling system BGS, SIL 4 certified by Certifer



In N.S1 block or 19-inch rack, the digital technology BGS is a software and hardware platform that can receive a railway signalling application.

It allows to:

  • Get inputs (analog and/or TOR data and/or digital)
  • Monitor outputs (TOR data and/or digital)
  • Manage information for maintenance and telemonitoring
  • Ensure the device safety
  • Manage application settings

BGS is SIL 4 certified by CERTIFER.


  • SIL 4 certificate of the BGS safety signalling system: limited risks, optimisation of costs and deadlines
  • Modularity: modular hardware configuration that can be adapted when needed
  • Programmable : software functions defined by desired applications
  • Settings: flexible functional declination of applications
  • Easier maintenance
  • 2 sizes: 19'' rack or 3-unit N.S1 block


  • A 2oo2 architecture and continuous monitoring of the block's internal data are helpful to adopt a secure and irreversible fallback position .
  • To facilitate the maintenance, the BGS is equipped with a real time clock and an event memory to track the functional review of the block and system
  • Exists in 3-unit N.S1 signaling block for countryside or in 19-inch rack format



The 1st application: DVL, crosswind detector

  • Application: it is essential to monitor the wind in order to control the train speed on high-speed railway lines. The crosswind detection system complies with this safety requirement, and is SIL 2 certified.
  • It is made of 3 sub-systems ; 19 DVL systems have been installed along the SEA high-speed railway line since 2016.
  • Installation in progress in Morocco: 3 DVL systems on the Tanger-Kenitra high-speed railway line (full implementation scheduled in 2017).


The 2nd application: PMGI, switch area management

  • Application: digital railway signaling equipement, for switch area management
  • SIL 4 certified, the highest security level in railway sector
  • Can be installed both on tram or metro lines
  • Installation in progress on the 1st tram line in Avignon