{"id":103778,"date":"2025-09-15T16:44:49","date_gmt":"2025-09-15T13:44:49","guid":{"rendered":"https:\/\/onlinestandart.com\/?p=103778"},"modified":"2025-09-15T16:44:49","modified_gmt":"2025-09-15T13:44:49","slug":"railways-public-transport","status":"publish","type":"post","link":"https:\/\/onlinestandart.com\/en\/railways-public-transport\/","title":{"rendered":"Railways &#038; Public Transport"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Key standards<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>EN\u202f50126\/8\/9 (rail RAMS), EN\u202f45545 (fire safety), TSIs (Technical Specifications for Interoperability), CENELEC standards.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Documented issues<\/h2>\n\n\n\n<p>RAIB\u2019s investigation into an ERTMS\/ETCS misoperation on the Cambrian Coast found that after a system restart, <strong>temporary speed restriction data was not uploaded<\/strong>, yet the display suggested it was. The safety documentation lacked a clear definition of safetyrelated data; there was a single point of failure and the independent safety assessor missed design-documentation issues. RAIB recommended improvements to the safety assurance process for highintegrity software. <a href=\"https:\/\/www.gov.uk\/raib-reports\/report-17-2019-loss-of-safety-critical-signalling-data-on-the-cambrian-coast-line#:~:text=trains%20by%20the%20signalling%20system,time%20for%20level%20crossing%20users\" target=\"_blank\" rel=\"noopener\">gov.uk<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Typical challenges<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Configuration and operational data are not clearly defined as safety critical, leading to insufficient checks.<\/li>\n\n\n\n<li>Independent safety assessments may not cover documentation thoroughly.<\/li>\n\n\n\n<li>Train drivers and operators rely on displays that may not reflect actual loaded data.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Best Practice playbook<\/h2>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>Define and classify safety-related data<\/strong>; ensure that temporary restrictions and configuration data are treated as safety critical and subject to checks. <a href=\"https:\/\/www.gov.uk\/raib-reports\/report-17-2019-loss-of-safety-critical-signalling-data-on-the-cambrian-coast-line#:~:text=trains%20by%20the%20signalling%20system,time%20for%20level%20crossing%20users\" target=\"_blank\" rel=\"noreferrer noopener\">gov.uk<\/a>.<\/li>\n\n\n\n<li><strong>Provide redundancy and verification<\/strong>: implement cross\u2011checks to confirm data is loaded after restarts; design out single points of failure.<\/li>\n\n\n\n<li><strong>Improve safety assurance processes<\/strong>: ensure independent safety assessors examine documentation and design thoroughly. <a href=\"https:\/\/www.gov.uk\/raib-reports\/report-17-2019-loss-of-safety-critical-signalling-data-on-the-cambrian-coast-line#:~:text=trains%20by%20the%20signalling%20system,time%20for%20level%20crossing%20users\" target=\"_blank\" rel=\"noreferrer noopener\">gov.uk<\/a>.<\/li>\n\n\n\n<li><strong>Train operators and maintainers<\/strong> to understand system states and verify that restrictions are active.<\/li>\n\n\n\n<li><strong>Audit and update documentation<\/strong> when system designs change or new software versions are introduced.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">References<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>RAIB report on loss of temporary speed restriction data and recommendations. <a href=\"https:\/\/www.gov.uk\/raib-reports\/report-17-2019-loss-of-safety-critical-signalling-data-on-the-cambrian-coast-line#:~:text=trains%20by%20the%20signalling%20system,time%20for%20level%20crossing%20users\" target=\"_blank\" rel=\"noreferrer noopener\">gov.uk<\/a>.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Key standards Documented issues RAIB\u2019s investigation into an ERTMS\/ETCS misoperation on the Cambrian Coast found that after a system restart, temporary speed restriction data was not uploaded, yet the display suggested it was. The safety&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[166],"tags":[],"class_list":["post-103778","post","type-post","status-publish","format-standard","hentry","category-case-studies"],"taxonomy_info":{"category":[{"value":166,"label":"Case Studies"}]},"featured_image_src_large":false,"author_info":{"display_name":"Online Standart","author_link":"https:\/\/onlinestandart.com\/en\/author\/online-standart\/"},"comment_info":0,"category_info":[{"term_id":166,"name":"Case Studies","slug":"case-studies","term_group":0,"term_taxonomy_id":166,"taxonomy":"category","description":"","parent":0,"count":16,"filter":"raw","cat_ID":166,"category_count":16,"category_description":"","cat_name":"Case Studies","category_nicename":"case-studies","category_parent":0}],"tag_info":false,"_links":{"self":[{"href":"https:\/\/onlinestandart.com\/en\/wp-json\/wp\/v2\/posts\/103778","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/onlinestandart.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/onlinestandart.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/onlinestandart.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/onlinestandart.com\/en\/wp-json\/wp\/v2\/comments?post=103778"}],"version-history":[{"count":0,"href":"https:\/\/onlinestandart.com\/en\/wp-json\/wp\/v2\/posts\/103778\/revisions"}],"wp:attachment":[{"href":"https:\/\/onlinestandart.com\/en\/wp-json\/wp\/v2\/media?parent=103778"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/onlinestandart.com\/en\/wp-json\/wp\/v2\/categories?post=103778"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/onlinestandart.com\/en\/wp-json\/wp\/v2\/tags?post=103778"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}