Safety software and systems designer

The CLEARSY company

CLEARSY was founded on January 1, 2001 by the team of engineers responsible for the industrialisation of the formal modelling tool called Atelier B, used in the railway sector to produce safety software.

CLEARSY: safety systems engineering

We are a French SME, specialised in the realisation of safety systems and software from level SIL1 to SIL4. We develop complex systems by ensuring their design, their validation, verification and safety study, right up to their commissioning.

CLEARSY produces safe systems and software in the railway, automotive, military, space and nuclear fields.

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WEBINAR: New safety controller enlarges CLEARSY Safety Platform
CLEARSY is pleased to invite you for the webinar on the CLEARSY Safety Controller on 25th June 2024 @ 5PM […]
CLEARSY supplies DB Cargo Frankfurt with an ERTMS/ETCS operational simulator
This simulator  has been extended with the possibility of connecting real equipment in place of simulated equipment. For the laboratory’s […]
CLEARSY joins forces with The Neat Company to integrate the CLEARSY Data Solver validation tool into the Horizon track plan editor!
When editing a railway track plan, operators must respect certain safety constraints when positioning their objects. For example, it’s crucial […]
Exciting News: Atelier B Community Edition 24.04 Available!
We are thrilled to announce the release of our latest version of Atelier B. Here’s what’s new and improved in […]
CLEARSY RS4 safety relays approved by RATP
CLEARSY’s RS4 safety relays have been approved by the RATP for use in safety metro station platform door closing systems.
ERTMS 2024 Conference in Valenciennes from the 23th to the 25th of April
CLEARSY will attend the ERTMS 2024 Conference in Valenciennes from the 23th to the 25th of April, organized by the […]

Safety software and systems

All our security systems and software available below. If you have a specific problem, contact us.

Contact us

Need a secure, custom-made system ?