{"id":8948,"date":"2020-05-28T11:28:07","date_gmt":"2020-05-28T09:28:07","guid":{"rendered":"http:\/\/localhost:8888\/clearsy\/?page_id=8948"},"modified":"2025-09-05T12:03:17","modified_gmt":"2025-09-05T10:03:17","slug":"accueil-acf","status":"publish","type":"page","link":"https:\/\/www.clearsy.com\/en\/","title":{"rendered":"Home"},"content":{"rendered":"

[vc_row full_width=”stretch_row” el_id=”hero-home” el_class=”hero no-mb”][vc_column]\n\t\"\"<\/picture>\n\n

CLEARSY<\/span><\/p>\n

Safety software and systems designer<\/h1>\n<\/div>

Your safety system<\/a><\/p>\n<\/div>[\/vc_column][\/vc_row][vc_row full_width=”stretch_row” el_class=”bg-gris py-4 no-mb”][vc_column width=”1\/2″ el_class=”mb-2 mb-md-0″]

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The CLEARSY company<\/h2>\n<\/div>

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.<\/p>\n<\/div>

CLEARSY: safety systems engineering<\/p>\n<\/div>

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.<\/p>\n

CLEARSY produces safe systems and software in the railway, automotive, military, space and nuclear fields.<\/a><\/span><\/p>\n

Download CLEARSY's leaflet<\/span>\n\t\tDownload<\/span><\/span><\/a>\n
\n Download the product catalog<\/span>\n\t\tDownload<\/span><\/span><\/a>\n
\n Download the railway products & services presentation<\/span>\n\t\tDownload<\/span><\/span><\/a>\n<\/p>\n

Presentation<\/a><\/p>\n<\/div>[\/vc_column][\/vc_row][vc_row][vc_column]

News<\/h2>\n<\/div>
\r\n \"Safety<\/a>\r\n Safety is demonstrated first at the system level<\/a>\r\n
\r\n 27 August 2026 | <\/span>Computer science<\/a>\r\n <\/div>\r\n
\r\n For railway signalling and urban transport systems, safety cannot be reduced to a simple check carried out at the end […]\r\n <\/div>\r\n<\/div><\/div>
\r\n \"A<\/a>\r\n A critical system upgraded in Malaysia!<\/a>\r\n
\r\n 26 August 2026 | <\/span>Railway<\/a>\r\n <\/div>\r\n
\r\n Prasarana Malaysia Berhad, the main operator of Kuala Lumpur\u2019s public transport network, has once again placed its trust in CLEARSY […]\r\n <\/div>\r\n<\/div><\/div>
\r\n \"CLEARSY\u2019s<\/a>\r\n CLEARSY\u2019s RS4 is coming to the United States<\/a>\r\n
\r\n 26 August 2026 | <\/span>Component<\/a>\r\n <\/div>\r\n
\r\n Hitachi Rail USA is supporting the modernisation of the Washington Metro with the new 8000 series trains, designed to meet […]\r\n <\/div>\r\n<\/div><\/div>
\r\n \"SIL4<\/a>\r\n SIL4 Signalling changeover unit deployment<\/a>\r\n
\r\n 7 July 2026 | <\/span>Component<\/a>\r\n <\/div>\r\n
\r\n CLEARSY supplies Hitachi Rail\u00a0with\u00a0SIL4\u00a0safety latching interface system\u00a0designed\u00a0to replace railway\u00a0signalling\u00a0systems. This\u00a0equipment\u00a0ensures\u00a0a fast,\u00a0simple\u00a0and\u00a0secure\u00a0switchover\u00a0between\u00a0the\u00a0old\u00a0and new\u00a0systems,\u00a0which\u00a0is\u00a0essential for\u00a0operations.\u00a0\u00a0 The validation of\u00a0complex\u00a0systems\u00a0generally\u00a0requires\u00a0several\u00a0test\u00a0campaigns\u00a0before\u00a0they\u00a0are put\u00a0into\u00a0service. During\u00a0this\u00a0period, the\u00a0old\u00a0signalling\u00a0system continues […]\r\n <\/div>\r\n<\/div><\/div>
\r\n \"A<\/a>\r\n A long-term partnership for defence innovation<\/a>\r\n
\r\n 23 June 2026 | <\/span>Defense<\/a>\r\n <\/div>\r\n
\r\n Since 2022, CLEARSY has been working with EXAIL to\u00a0supply\u00a0new equipment for a\u00a0naval\u00a0mine\u00a0countermeasure\u00a0system.\u00a0 Thanks to its\u00a0expertise\u00a0in the design and industrialization of\u00a0tailor-made […]\r\n <\/div>\r\n<\/div><\/div>
\r\n \"Diversification<\/a>\r\n Diversification continues<\/a>\r\n
\r\n 10 June 2026 | <\/span>Aeronautics<\/a>\r\n <\/div>\r\n
\r\n In safety-critical systems, trust is built over the long term. Expertise developed in the railway sector can often meet the […]\r\n <\/div>\r\n<\/div><\/div><\/div>
<\/div><\/div>
<\/div>
<\/div><\/div>[\/vc_column][\/vc_row][vc_section full_width=”stretch_row” el_class=”bg-bleu”][vc_row full_width=”stretch_row”][vc_column]

Safety software and systems<\/p>\n<\/div>

All our security systems and software available below. If you have a specific problem, contact us.<\/span><\/p>\n<\/div>[\/vc_column][\/vc_row][vc_row][vc_column width=”1\/4″ el_class=”full-btn-list”]

Know-how<\/span><\/p>\n

Formal methods<\/a><\/p>\n

Custom made safety developments<\/a><\/p>\n

research and development<\/a><\/p>\n

operational safety<\/a><\/p>\n<\/div>[\/vc_column][vc_column width=”1\/4″ el_class=”full-btn-list”]

Tools<\/span><\/p>\n

Atelier B<\/a><\/p>\n

Supervision<\/a><\/p>\n

Bancs de tests<\/a><\/p>\n

CLEARSY Safety Platform<\/a><\/p>\n

ERTMS\/ETCS<\/a><\/p>\n

CLEARSY Data Solver<\/a><\/p>\n<\/div>[\/vc_column][vc_column width=”1\/4″ el_class=”full-btn-list”]

operational systems<\/span><\/p>\n

COPPILOT<\/a><\/p>\n

COPP<\/a><\/p>\n

DIL<\/a><\/p>\n

DOF1<\/a><\/p>\n

KFS SIL2<\/a><\/p>\n

KVB<\/a><\/p>\n

KPVA<\/a><\/p>\n

REGIOLIS<\/a><\/p>\n

Tramway automatic stopping<\/a><\/p>\n

New York City Transit<\/a><\/p>\n<\/div>[\/vc_column][vc_column width=”1\/4″ el_class=”full-btn-list”]

Service areas<\/span><\/p>\n

Railways<\/a><\/p>\n

Energy<\/a><\/p>\n

Micro-electronics<\/a><\/p>\n

automotive<\/a><\/p>\n

defense<\/a><\/p>\n<\/div>[\/vc_column][\/vc_row][\/vc_section][vc_row full_width=”stretch_row” el_class=”py-0″][vc_column]

\"\"<\/div><\/div><\/div><\/div>

Contact us<\/p>\n<\/div>

Need a secure, custom-made system ?<\/p>\n<\/div><\/div><\/div><\/div>

Contact us<\/a><\/p>\n<\/div><\/div><\/div><\/div><\/div>

<\/div><\/div>[\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"In safety-critical systems, trust is built over the long term. 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