{"version":"1.0","provider_name":"Nanjing Roadsky Traffic Facility Co. Ltd. (Roadsky Corporation)","provider_url":"https:\/\/roadskymarking.com\/fr","title":"Glass Bead Depth Impact on Road Marking Retroreflectivity","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"HAYJ0EyR6J\"><a href=\"https:\/\/roadskymarking.com\/fr\/glass-bead-depth-impact-on-road-marking-retroreflectivity.html\">Influence de la profondeur des billes de verre sur la r\u00e9tror\u00e9flectivit\u00e9 des marquages routiers<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/roadskymarking.com\/fr\/glass-bead-depth-impact-on-road-marking-retroreflectivity.html\/embed#?secret=HAYJ0EyR6J\" width=\"600\" height=\"338\" title=\"\u00ab\u00a0Glass Bead Depth Impact on Road Marking Retroreflectivity\u00a0\u00bb &#8212; Nanjing Roadsky Traffic Facility Co.,Ltd. (Roadsky Corporation)\" data-secret=\"HAYJ0EyR6J\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\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\/* ]]> *\/\n<\/script>","thumbnail_url":"https:\/\/roadskymarking.com\/wp-content\/uploads\/2026\/08\/Glass-Bead-Embedment-Depth.jpg","thumbnail_width":600,"thumbnail_height":400,"description":"Road marking retroreflectivity is a key factor in nighttime road safety. It determines how effectively pavement markings reflect vehicle headlights back toward drivers, helping them identify lane lines, edge lines, arrows, and other road markings in low-light conditions. One of the most important factors affecting retroreflectivity is glass bead embedment depth. When glass beads are applied to road marking paint, their position relative to the marking surface directly affects how efficiently they receive and return light. Glass Bead Embedment Depth Explained Glass bead embedment depth refers to how deeply a glass bead is embedded into the road marking material. When applied correctly, approximately part of the bead remains exposed above the marking surface. This exposed portion allows incoming light from vehicle headlights to enter the glass bead, undergo refraction and reflection, and return toward the driver&#8217;s eyes. If the beads are embedded too deeply or are not embedded deeply enough, their optical performance can be reduced. How Glass Bead Depth ..."}