{"version":"1.0","provider_name":"\u80e1\u601d WooSee","provider_url":"https:\/\/woosee.pro\/en\/","author_name":"\u80e1\u601d","author_url":"https:\/\/woosee.pro\/en\/author\/solo\/","title":"The Invisible Upgrade: What the New Signalling System on the Tsuen Wan Line Means - \u80e1\u601d WooSee","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"knFvqthV4X\"><a href=\"https:\/\/woosee.pro\/en\/mtr-tsuen-wan-line-new-signalling-system\/\">The Invisible Upgrade: What the New Signalling System on the Tsuen Wan Line Means<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/woosee.pro\/en\/mtr-tsuen-wan-line-new-signalling-system\/embed\/#?secret=knFvqthV4X\" width=\"600\" height=\"338\" title=\"&#8220;The Invisible Upgrade: What the New Signalling System on the Tsuen Wan Line Means&#8221; &#8212; \u80e1\u601d WooSee\" data-secret=\"knFvqthV4X\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/woosee.pro\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","thumbnail_url":"https:\/\/woosee.pro\/wp-content\/uploads\/2026\/03\/A164_entering_Kwai_Hing_Station_20190301143013-scaled.jpg","thumbnail_width":2560,"thumbnail_height":1707,"description":"Hong Kong\u2019s MTR Tsuen Wan Line has switched to a new signalling system. The change is invisible to most passengers but determines how closely trains can run and how frequently they arrive. Moving from traditional block signalling to CBTC could reduce headways from about 120 seconds to around 100\u2013110 seconds. Similar systems are already widely used in many European metro networks."}