{"id":21886,"date":"2025-06-04T12:08:41","date_gmt":"2025-06-04T11:08:41","guid":{"rendered":"https:\/\/www.prover.com\/?p=21886"},"modified":"2025-06-12T09:41:10","modified_gmt":"2025-06-12T08:41:10","slug":"how-to-successfully-migrate-existing-interlocking-systems-to-an-open-signaling-solution","status":"publish","type":"post","link":"https:\/\/www.prover.com\/guide\/how-to-successfully-migrate-existing-interlocking-systems-to-an-open-signaling-solution\/","title":{"rendered":"How to successfully migrate existing interlocking systems to an open signaling solution"},"content":{"rendered":"<p><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-padding-top:0px;--awb-padding-right:0px;--awb-padding-bottom:0px;--awb-padding-left:0px;--awb-margin-top:0px;--awb-margin-bottom:0px;--awb-margin-top-small:0px;--awb-margin-bottom-small:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:calc( 1280px + 80px );margin-left: calc(-80px \/ 2 );margin-right: calc(-80px \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_2 1_2 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:50%;--awb-margin-top-large:0px;--awb-spacing-right-large:calc( 0.1 * calc( 100% - 80px ) );--awb-margin-bottom-large:0px;--awb-spacing-left-large:40px;--awb-width-medium:50%;--awb-order-medium:0;--awb-spacing-right-medium:calc( 0.1 * calc( 100% - 80px ) );--awb-spacing-left-medium:40px;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:40px;--awb-spacing-left-small:40px;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-1 fusion-sep-none fusion-title-text fusion-title-size-six\" style=\"--awb-margin-top:0px;--awb-margin-top-small:0px;--awb-margin-right-small:0px;--awb-margin-bottom-small:10px;--awb-margin-left-small:0px;\"><h6 class=\"fusion-title-heading title-heading-left\" style=\"margin:0;text-transform:uppercase;\">Your Content Goes Here<\/h6><\/div><div class=\"fusion-title title fusion-title-2 fusion-sep-none fusion-title-text fusion-title-size-one\" style=\"--awb-margin-top:0px;--awb-margin-bottom:25px;--awb-margin-top-small:10px;--awb-margin-right-small:0px;--awb-margin-bottom-small:30px;--awb-margin-left-small:0px;\"><h1 class=\"fusion-title-heading title-heading-left\" style=\"margin:0;text-transform:none;\">How to successfully migrate existing interlocking systems to an open signaling solution<\/h1><\/div><div class=\"fusion-text fusion-text-1 fusion-text-no-margin\" style=\"--awb-margin-top:0px;--awb-margin-right:0px;--awb-margin-bottom:0px;--awb-margin-left:0px;\"><p>Aging relay-based systems are nearing their limit. Spare parts are scarce, costs are rising, and critical knowledge is fading fast. This guide shows you how to take control of your infrastructure\u2019s future \u2013 by migrating to open, COTS-based signaling systems in a step-by-step, low-risk way.<\/p>\n<p>Backed by real-world case studies like the Stockholm Metro, and trusted by leading European operators, this guide gives you the tools to modernize with confidence.<\/p>\n<\/div><div class=\"fusion-title title fusion-title-3 fusion-sep-none fusion-title-text fusion-title-size-five\" style=\"--awb-margin-top:40px;--awb-margin-bottom:5px;--awb-margin-top-small:30px;--awb-margin-right-small:0px;--awb-margin-bottom-small:10px;--awb-margin-left-small:0px;\"><h5 class=\"fusion-title-heading title-heading-left\" style=\"margin:0;text-transform:none;\">In this guide you will learn:<\/h5><\/div><ul style=\"--awb-size:17px;--awb-margin-top:20px;--awb-margin-right:0px;--awb-margin-bottom:20px;--awb-margin-left:0px;--awb-line-height:28.9px;--awb-icon-width:28.9px;--awb-icon-height:28.9px;--awb-icon-margin:11.9px;--awb-content-margin:40.8px;--awb-circlecolor:var(--awb-color3);--awb-circle-yes-font-size:14.96px;\" class=\"fusion-checklist fusion-checklist-1 fusion-checklist-default type-icons\"><li class=\"fusion-li-item\" style=\"\"><span class=\"icon-wrapper circle-yes\"><i class=\"fusion-li-icon fa-check fas\" aria-hidden=\"true\"><\/i><\/span><div class=\"fusion-li-item-content\">Why now is the time to migrate \u2013 and what\u2019s at risk if you wait<\/div><\/li><li class=\"fusion-li-item\" style=\"\"><span class=\"icon-wrapper circle-yes\"><i class=\"fusion-li-icon fa-check fas\" aria-hidden=\"true\"><\/i><\/span><div class=\"fusion-li-item-content\">The 3-step process for safe, incremental migration using digital twins and formal methods<\/div><\/li><li class=\"fusion-li-item\" style=\"\"><span class=\"icon-wrapper circle-yes\"><i class=\"fusion-li-icon fa-check fas\" aria-hidden=\"true\"><\/i><\/span><div class=\"fusion-li-item-content\">How to avoid vendor lock-in while improving safety, control, and scalability<\/div><\/li><li class=\"fusion-li-item\" style=\"\"><span class=\"icon-wrapper circle-yes\"><i class=\"fusion-li-icon fa-check fas\" aria-hidden=\"true\"><\/i><\/span><div class=\"fusion-li-item-content\">How to simulate and verify upgrades before deployment<\/div><\/li><li class=\"fusion-li-item\" style=\"\"><span class=\"icon-wrapper circle-yes\"><i class=\"fusion-li-icon fa-check fas\" aria-hidden=\"true\"><\/i><\/span><div class=\"fusion-li-item-content\">Tools and best practices to minimize disruptions and shorten project lead times<\/div><\/li><li class=\"fusion-li-item\" style=\"\"><span class=\"icon-wrapper circle-yes\"><i class=\"fusion-li-icon fa-check fas\" aria-hidden=\"true\"><\/i><\/span><div class=\"fusion-li-item-content\">Real outcomes from a successful migration at Stockholm Metro (SL)<\/div><\/li><\/ul><div class=\"fusion-separator fusion-full-width-sep\" style=\"align-self: center;margin-left: auto;margin-right: auto;margin-top:20px;margin-bottom:20px;width:100%;\"><div class=\"fusion-separator-border sep-single\" style=\"--awb-height:20px;--awb-amount:20px;border-color:var(--awb-custom_color_2);border-top-width:0px;\"><\/div><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-1 fusion_builder_column_1_2 1_2 fusion-flex-column inv-form\" style=\"--awb-bg-color:var(--awb-color3);--awb-bg-color-hover:var(--awb-color3);--awb-bg-size:cover;--awb-width-large:50%;--awb-margin-top-large:0px;--awb-spacing-right-large:40px;--awb-margin-bottom-large:0px;--awb-spacing-left-large:40px;--awb-width-medium:50%;--awb-order-medium:0;--awb-spacing-right-medium:40px;--awb-spacing-left-medium:40px;--awb-width-small:100%;--awb-order-small:0;--awb-margin-top-small:40px;--awb-spacing-right-small:40px;--awb-spacing-left-small:40px;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-image-element \" style=\"--awb-aspect-ratio:2 \/ 1;--awb-margin-top:0px;--awb-margin-right:0px;--awb-margin-bottom:0px;--awb-margin-left:0px;--awb-caption-title-font-family:var(--h2_typography-font-family);--awb-caption-title-font-weight:var(--h2_typography-font-weight);--awb-caption-title-font-style:var(--h2_typography-font-style);--awb-caption-title-size:var(--h2_typography-font-size);--awb-caption-title-transform:var(--h2_typography-text-transform);--awb-caption-title-line-height:var(--h2_typography-line-height);--awb-caption-title-letter-spacing:var(--h2_typography-letter-spacing);\"><span class=\" fusion-imageframe imageframe-none imageframe-1 hover-type-none has-aspect-ratio\"><img decoding=\"async\" width=\"1200\" height=\"610\" alt=\"Migrate existing interlocking systems guide\" title=\"migrate-existing-interlocking-systems-guide\" src=\"https:\/\/www.prover.com\/wp-content\/uploads\/2025\/06\/migrate-existing-interlocking-systems-guide.webp\" data-orig-src=\"https:\/\/www.prover.com\/wp-content\/uploads\/2025\/06\/migrate-existing-interlocking-systems-guide.webp\" class=\"lazyload img-responsive wp-image-21893 img-with-aspect-ratio\" data-parent-fit=\"cover\" data-parent-container=\".fusion-image-element\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%271200%27%20height%3D%27610%27%20viewBox%3D%270%200%201200%20610%27%3E%3Crect%20width%3D%271200%27%20height%3D%27610%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-srcset=\"https:\/\/www.prover.com\/wp-content\/uploads\/2025\/06\/migrate-existing-interlocking-systems-guide-200x102.webp 200w, https:\/\/www.prover.com\/wp-content\/uploads\/2025\/06\/migrate-existing-interlocking-systems-guide-400x203.webp 400w, https:\/\/www.prover.com\/wp-content\/uploads\/2025\/06\/migrate-existing-interlocking-systems-guide-600x305.webp 600w, https:\/\/www.prover.com\/wp-content\/uploads\/2025\/06\/migrate-existing-interlocking-systems-guide-800x407.webp 800w, https:\/\/www.prover.com\/wp-content\/uploads\/2025\/06\/migrate-existing-interlocking-systems-guide.webp 1200w\" data-sizes=\"auto\" data-orig-sizes=\"(max-width: 840px) 100vw, 800px\" \/><\/span><\/div><div class=\"fusion-builder-row fusion-builder-row-inner fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"--awb-flex-grow:0;--awb-flex-grow-medium:0;--awb-flex-grow-small:0;--awb-flex-shrink:0;--awb-flex-shrink-medium:0;--awb-flex-shrink-small:0;width:calc( 100% + 80px ) !important;max-width:calc( 100% + 80px ) !important;margin-left: calc(-80px \/ 2 );margin-right: calc(-80px \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column_inner fusion-builder-nested-column-0 fusion_builder_column_inner_1_1 1_1 fusion-flex-column\" style=\"--awb-padding-top:40px;--awb-padding-right:50px;--awb-padding-bottom:40px;--awb-padding-left:50px;--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:40px;--awb-margin-bottom-large:20px;--awb-spacing-left-large:40px;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:40px;--awb-spacing-left-medium:40px;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:40px;--awb-spacing-left-small:40px;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-4 fusion-sep-none fusion-title-text fusion-title-size-four\" style=\"--awb-text-color:var(--awb-color1);--awb-margin-top-small:10px;--awb-margin-right-small:0px;--awb-margin-bottom-small:10px;--awb-margin-left-small:0px;\"><h4 class=\"fusion-title-heading title-heading-left\" style=\"margin:0;text-transform:none;\">Yes please, send me the guide!<\/h4><\/div>\n\t\t\t\t\t\t<script>\n\t\t\t\t\t\t\twindow.hsFormsOnReady = window.hsFormsOnReady || [];\n\t\t\t\t\t\t\twindow.hsFormsOnReady.push(()=>{\n\t\t\t\t\t\t\t\thbspt.forms.create({\n\t\t\t\t\t\t\t\t\tportalId: 26789739,\n\t\t\t\t\t\t\t\t\tformId: \"ae31cf09-7e4b-43fe-a036-a36946e46c94\",\n\t\t\t\t\t\t\t\t\ttarget: \"#hbspt-form-1776215643000-9159805497\",\n\t\t\t\t\t\t\t\t\tregion: \"eu1\",\n\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t})});\n\t\t\t\t\t\t<\/script>\n\t\t\t\t\t\t<div class=\"hbspt-form\" id=\"hbspt-form-1776215643000-9159805497\"><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-2 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-margin-top:80px;--awb-margin-bottom:20px;--awb-background-color:var(--awb-custom_color_4);--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:calc( 1280px + 80px );margin-left: calc(-80px \/ 2 );margin-right: calc(-80px \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-2 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-padding-top:60px;--awb-padding-right:20px;--awb-padding-bottom:60px;--awb-padding-left:20px;--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:40px;--awb-margin-bottom-large:0px;--awb-spacing-left-large:40px;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:40px;--awb-spacing-left-medium:40px;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:40px;--awb-spacing-left-small:40px;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-5 fusion-sep-none fusion-title-text fusion-title-size-two\" style=\"--awb-margin-top-small:10px;--awb-margin-right-small:0px;--awb-margin-bottom-small:10px;--awb-margin-left-small:0px;\"><h2 class=\"fusion-title-heading title-heading-left\" style=\"margin:0;text-transform:none;\">Table of Content<\/h2><\/div><div class=\"fusion-text fusion-text-2\"><ol>\n<li>\n<p class=\"p1\"><b>Introduction<\/b><\/p>\n<\/li>\n<li>\n<p class=\"p1\"><b><\/b><b>The need for migrating old signaling systems to<br \/>\nmodern open solutions based on COTS hardware<br \/>\n<\/b><br \/>\nThe purpose of the migration<br \/>\nWidespread use of old interlocking systems across Europe<br \/>\nWhat\u2019s preventing migration?<br \/>\nWhat is the value of migration?<\/p>\n<\/li>\n<li>\n<p class=\"p1\"><b>How to migrate old signaling systems to modern<br \/>\nopen signaling solutions based on COTS hardware<\/b><\/p>\n<p>A description of the signaling system<br \/>\nIntroduction to the migration process<br \/>\nPurpose and effects of the migration process<br \/>\nThe components of the migration process<br \/>\nProcess for migration<br \/>\nCreate digital twins<br \/>\nSpecification of the system and subsystems<br \/>\nProcess for upgrading<br \/>\nSafety assurance and approval<br \/>\nOther processes<\/li>\n<li>\n<p class=\"p1\"><b>Case: Stockholm Metro (SL)<\/b><\/p>\n<p>Solution approach<br \/>\nOutcome and benefits<\/li>\n<li>\n<p class=\"p1\"><b>Your first step toward a migration project<\/b><\/p>\n<\/li>\n<\/ol>\n<\/div><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-3 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-padding-top:50px;--awb-padding-bottom:20px;--awb-padding-top-small:40px;--awb-padding-bottom-small:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-center fusion-flex-justify-content-center fusion-flex-content-wrap\" style=\"max-width:calc( 1280px + 80px );margin-left: calc(-80px \/ 2 );margin-right: calc(-80px \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-3 fusion_builder_column_2_3 2_3 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:66.666666666667%;--awb-margin-top-large:0px;--awb-spacing-right-large:40px;--awb-margin-bottom-large:20px;--awb-spacing-left-large:40px;--awb-width-medium:66.666666666667%;--awb-order-medium:0;--awb-spacing-right-medium:40px;--awb-spacing-left-medium:40px;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:40px;--awb-spacing-left-small:40px;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-6 fusion-sep-none fusion-title-text fusion-title-size-six\" style=\"--awb-margin-bottom:5px;--awb-margin-top-small:10px;--awb-margin-right-small:0px;--awb-margin-bottom-small:10px;--awb-margin-left-small:0px;\"><h6 class=\"fusion-title-heading title-heading-left\" style=\"margin:0;text-transform:uppercase;\">Introduction<\/h6><\/div><div class=\"fusion-title title fusion-title-7 fusion-sep-none fusion-title-text fusion-title-size-three\" style=\"--awb-margin-bottom:30px;--awb-margin-top-small:10px;--awb-margin-right-small:0px;--awb-margin-bottom-small:30px;--awb-margin-left-small:0px;--awb-font-size:24pt;\"><h3 class=\"fusion-title-heading title-heading-left\" style=\"font-family:var(--awb-typography3-font-family);font-weight:var(--awb-typography3-font-weight);font-style:var(--awb-typography3-font-style);margin:0;letter-spacing:var(--awb-typography3-letter-spacing);text-transform:var(--awb-typography3-text-transform);font-size:1em;line-height:var(--awb-typography3-line-height);\">Why legacy signaling systems must evolve \u2013 and how to do it without disruption<\/h3><\/div><div class=\"fusion-image-element \" style=\"--awb-caption-title-font-family:var(--h2_typography-font-family);--awb-caption-title-font-weight:var(--h2_typography-font-weight);--awb-caption-title-font-style:var(--h2_typography-font-style);--awb-caption-title-size:var(--h2_typography-font-size);--awb-caption-title-transform:var(--h2_typography-text-transform);--awb-caption-title-line-height:var(--h2_typography-line-height);--awb-caption-title-letter-spacing:var(--h2_typography-letter-spacing);\"><span class=\" fusion-imageframe imageframe-none imageframe-2 hover-type-none\"><img decoding=\"async\" width=\"1024\" height=\"638\" alt=\"Migrate existing interlocking systems\" title=\"migrate-existing-interlocking-systems\" src=\"https:\/\/www.prover.com\/wp-content\/uploads\/2025\/06\/migrate-existing-interlocking-systems.webp\" data-orig-src=\"https:\/\/www.prover.com\/wp-content\/uploads\/2025\/06\/migrate-existing-interlocking-systems.webp\" class=\"lazyload img-responsive wp-image-21891\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%271024%27%20height%3D%27638%27%20viewBox%3D%270%200%201024%20638%27%3E%3Crect%20width%3D%271024%27%20height%3D%27638%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-srcset=\"https:\/\/www.prover.com\/wp-content\/uploads\/2025\/06\/migrate-existing-interlocking-systems-200x125.webp 200w, https:\/\/www.prover.com\/wp-content\/uploads\/2025\/06\/migrate-existing-interlocking-systems-400x249.webp 400w, https:\/\/www.prover.com\/wp-content\/uploads\/2025\/06\/migrate-existing-interlocking-systems-600x374.webp 600w, https:\/\/www.prover.com\/wp-content\/uploads\/2025\/06\/migrate-existing-interlocking-systems-800x498.webp 800w, https:\/\/www.prover.com\/wp-content\/uploads\/2025\/06\/migrate-existing-interlocking-systems.webp 1024w\" data-sizes=\"auto\" data-orig-sizes=\"(max-width: 840px) 100vw, 1024px\" \/><\/span><\/div><div class=\"fusion-text fusion-text-3 fusion-text-no-margin\" style=\"--awb-margin-top:60px;--awb-margin-bottom:40px;\"><p class=\"p1\"><span class=\"s1\">As railway infrastructure ages across Europe, operators face a critical inflection point. Relay-based signaling systems, some nearly a century old, continue to direct train movements faithfully across thousands of kilometers of track. Yet beneath this reliability lies a growing challenge: the expertise to maintain these systems and access to spare parts needed to repair them.<\/span><\/p>\n<p class=\"p1\"><span class=\"s1\">This guide offers a practical roadmap for infrastructure managers to navigate the increasingly urgent transition from legacy signaling systems to modern, open solutions based on commercial off-the-shelf (COTS) hardware. You\u2019ll discover how digital twins, formal methods, and structured migration processes can transform this complex challenge into a strategic opportunity that will enhance safety, reduce long-term costs, and the possibility to break free from vendor lock-in without disrupting your operations.<\/span><\/p>\n<p class=\"p1\"><span class=\"s1\">Whether you\u2019re planning a complete system overhaul or taking incremental steps toward modernization, this guide provides the framework and real-world examples needed to secure your railway\u2019s signaling future in an increasingly digital world.<\/span><\/p>\n<h3>The need for migrating old signaling systems to modern open solutions based on COTS hardware<\/h3>\n<p>Relay-based signaling systems have long been the backbone of railway operations. While experts predict these systems will remain in use far beyond 2030, a growing challenge is emerging: relay expertise and spare parts are rapidly disappearing. Many organizations face a critical knowledge gap, with limited documentation and resources. This is one of the main drivers for the need to start planning a migration project. Without action, the risk of losing essential know-how increases over time.<\/p>\n<\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-4 fusion_builder_column_2_3 2_3 fusion-flex-column inv-form\" style=\"--awb-padding-top:50px;--awb-padding-right:50px;--awb-padding-bottom:40px;--awb-padding-left:50px;--awb-bg-color:var(--awb-color3);--awb-bg-color-hover:var(--awb-color3);--awb-bg-size:cover;--awb-width-large:66.666666666667%;--awb-margin-top-large:0px;--awb-spacing-right-large:0px;--awb-margin-bottom-large:0px;--awb-spacing-left-large:40px;--awb-width-medium:66.666666666667%;--awb-order-medium:0;--awb-spacing-right-medium:0px;--awb-spacing-left-medium:40px;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:40px;--awb-spacing-left-small:40px;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-8 fusion-sep-none fusion-title-text fusion-title-size-four\" style=\"--awb-text-color:var(--awb-color1);--awb-margin-bottom:10px;--awb-margin-top-small:10px;--awb-margin-right-small:0px;--awb-margin-bottom-small:10px;--awb-margin-left-small:0px;\"><h4 class=\"fusion-title-heading title-heading-left\" style=\"margin:0;text-transform:none;\">Fill out the form to read the full guide.<\/h4><\/div>\n\t\t\t\t\t\t<script>\n\t\t\t\t\t\t\twindow.hsFormsOnReady = window.hsFormsOnReady || [];\n\t\t\t\t\t\t\twindow.hsFormsOnReady.push(()=>{\n\t\t\t\t\t\t\t\thbspt.forms.create({\n\t\t\t\t\t\t\t\t\tportalId: 26789739,\n\t\t\t\t\t\t\t\t\tformId: \"ae31cf09-7e4b-43fe-a036-a36946e46c94\",\n\t\t\t\t\t\t\t\t\ttarget: \"#hbspt-form-1776215643000-6700472696\",\n\t\t\t\t\t\t\t\t\tregion: \"eu1\",\n\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t})});\n\t\t\t\t\t\t<\/script>\n\t\t\t\t\t\t<div class=\"hbspt-form\" id=\"hbspt-form-1776215643000-6700472696\"><\/div><\/div><\/div><\/div><\/div><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Aging relay-based systems are nearing their limit. Spare parts are scarce, costs are rising, and critical knowledge is fading fast. This guide shows you how to take control of your infrastructure\u2019s future \u2013 by migrating to open, COTS-based signaling systems in a step-by-step, low-risk way.<\/p>\n<p>Backed by real-world case studies like the Stockholm Metro, and trusted by leading European operators, this guide gives you the tools to modernize with confidence.<\/p>\n","protected":false},"author":28,"featured_media":21893,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"content-type":"","inline_featured_image":false,"footnotes":""},"categories":[163,187],"tags":[188],"class_list":["post-21886","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guide","category-open-signaling","tag-guide"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to successfully migrate existing interlocking systems to an open signaling solution - 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