{"version":"1.0","provider_name":"Nanjing Roadsky Traffic Facility Co.,Ltd. (Roadsky Corporation)","provider_url":"https:\/\/roadskymarking.com\/it","title":"AASHTO M247 Glass Beads for Road Marking - Roadsky","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"mejLjvgRZq\"><a href=\"https:\/\/roadskymarking.com\/it\/aashto-m247-glass-beads-for-road-marking.html\">AASHTO M247: perline di vetro per la segnaletica orizzontale<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/roadskymarking.com\/it\/aashto-m247-glass-beads-for-road-marking.html\/embed#?secret=mejLjvgRZq\" width=\"600\" height=\"338\" title=\"&#8220;AASHTO M247 Glass Beads for Road Marking&#8221; &#8212; Nanjing Roadsky Traffic Facility Co.,Ltd. (Roadsky Corporation)\" data-secret=\"mejLjvgRZq\" 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\/What-Are-AASHTO-M247-Glass-Beads.jpg","thumbnail_width":600,"thumbnail_height":400,"description":"If you work with road marking materials, you have probably come across AASHTO M247 glass beads. They are small glass beads, but they play a very important role in making road markings easier to see, especially at night. In simple terms, AASHTO M247 is a specification for glass beads that are dropped or sprayed onto pavement markings to create a retroreflective road marking. The current version is AASHTO M 247-13(2022), which is the reapproved current edition of the specification. So, what exactly are these glass beads, how do they work, and what should you check when buying them? Let&#8217;s take a closer look. What Are AASHTO M247 Glass Beads? AASHTO M247 glass beads are transparent, spherical glass particles used with pavement marking materials such as traffic paint, thermoplastic, and other road marking systems. Their main job is to improve the retroreflectivity of road markings. When a vehicle&#8217;s headlights shine on a road marking, the glass beads capture and redirect part ..."}