{"id":19883,"date":"2024-06-26T10:07:36","date_gmt":"2024-06-26T08:07:36","guid":{"rendered":"https:\/\/www.clearsy.com\/?p=19883"},"modified":"2024-08-27T11:41:48","modified_gmt":"2024-08-27T09:41:48","slug":"extension-of-line-14-of-the-paris-metro-over-25-years-of-reliability-thanks-to-the-b-formal-method","status":"publish","type":"post","link":"https:\/\/www.clearsy.com\/en\/the-tools\/extension-of-line-14-of-the-paris-metro-over-25-years-of-reliability-thanks-to-the-b-formal-method\/","title":{"rendered":"Extension of Line 14 of the Paris Metro: over 25 years of reliability thanks to the B formal method"},"content":{"rendered":"<p>&#8220;<em>Thanks to the B method, Meteor kept its promise&#8221; &#8230; &#8220;I&#8217;d never seen anything like it: the software was almost perfect the first time&#8221;. <\/em><em>&#8211; Claude Hennebert, RATP, Delegate to the DGA, Lettre B No3, April 98<\/em><\/p>\n<p>On the occasion of the recent extension of line 14 of the Paris metro, a fully automatic driverless line, CLEARSY is proud to point out that the automatic train control software, initially developed using the B formal method, continues to guarantee the safety and reliability of this critical system.<\/p>\n<p>The continued success of PARIS Line 14, thanks to the B method, demonstrates that formal methods are not only effective but also sustainable for critical systems.<\/p>\n<p>Atelier B is the tool developed and distributed by CLEARSY since 1993 to support the B method, develop proven critical software and demonstrate system safety through mathematical proof.<\/p>\n<p>The Atelier B tool would not have been developed without the RATP, which wanted a breakthrough innovation for the development of the METEOR metro (L14) by Siemens Mobility France (formerly Matra Transport). CLEARSY industrialized ALSTOM&#8217;s original tool; the close collaboration between RATP, ALSTOM, SIEMENS, INRETS (now IFSTTAR) and CLEARSY made this level of excellence possible.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&#8220;Thanks to the B method, Meteor kept its promise&#8221; &#8230; &#8220;I&#8217;d never seen anything like it: the software was almost [&hellip;]<\/p>\n","protected":false},"author":18,"featured_media":19879,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[679,1541,685,1536,686],"tags":[],"class_list":["post-19883","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-the-components","category-computer-science","category-the-offers","category-safety","category-the-tools"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Extension of Line 14 of the Paris Metro: over 25 years of reliability thanks to the B formal method - 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