1.0Spacing Montrealhttps://spacing.ca/montrealAlanah Heffezhttps://spacing.ca/montreal/author/alanah/rich600338<blockquote class="wp-embedded-content" data-secret="RcSOKA4JiK"><a href="https://spacing.ca/montreal/2010/08/10/mind-the-dou-dou-dou-door/">Mind the dou-dou-dou-door</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://spacing.ca/montreal/2010/08/10/mind-the-dou-dou-dou-door/embed/#?secret=RcSOKA4JiK" width="600" height="338" title="“Mind the dou-dou-dou-door” — Spacing Montreal" data-secret="RcSOKA4JiK" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !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); </script> The STM is introducing a tone to alert passengers before the metro doors close. This is meant to increase efficiency and ensure comfort and safety aboard the metro, presumably by preventing bits of people from being slammed between the doors. Click below to hear the tone: You can listen to the sound here. I loveContinue reading