{"id":481,"date":"2026-10-26T07:11:57","date_gmt":"2026-10-26T07:11:57","guid":{"rendered":"https:\/\/sallanmetals.com\/?page_id=481"},"modified":"2026-10-30T08:16:52","modified_gmt":"2026-10-30T08:16:52","slug":"aashto-mash-safety-barrier-systems","status":"publish","type":"page","link":"https:\/\/sallanmetals.com\/ar\/aashto-mash-safety-barrier-systems\/","title":{"rendered":"AASHTO MASH safety barrier systems"},"content":{"rendered":"<div data-elementor-type=\"wp-page\" data-elementor-id=\"481\" class=\"elementor elementor-481\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6cfde00 e-con-full e-flex e-con e-parent\" data-id=\"6cfde00\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-20c5c83 e-flex e-con-boxed e-con e-child\" data-id=\"20c5c83\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-aed3ab2 e-con-full e-flex e-con e-child\" data-id=\"aed3ab2\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a06b52f elementor-widget__width-auto elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"a06b52f\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInLeft&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">AASHTO MASH<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-996d69d elementor-invisible elementor-widget elementor-widget-elementskit-heading\" data-id=\"996d69d\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInLeft&quot;,&quot;_animation_delay&quot;:200}\" data-widget_type=\"elementskit-heading.default\">\n\t\t\t\t\t<div class=\"ekit-wid-con\" ><div class=\"ekit-heading elementskit-section-title-wraper text_left   ekit_heading_tablet-   ekit_heading_mobile-\"><h3 class=\"ekit-heading--title elementskit-section-title text_fill\">AASHTO MASH <span> safety barrier <\/span> systems<\/h3>\t\t\t\t<div class='ekit-heading__description'>\n\t\t\t\t\t<p>MASH is the American crash-test standard for roadside safety hardware, and US highway agencies require it for new permanent barrier installations.<\/p>\n<p>The Manual for Assessing Safety Hardware (MASH) is published by AASHTO, the American Association of State Highway and Transportation Officials. It sets out how permanent and temporary highway safety features are crash tested and how the results are judged. The current edition, MASH 2016, replaced the earlier NCHRP Report 350.<\/p>\n\t\t\t\t<\/div>\n\t\t\t<\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-41d728c e-con-full e-flex e-con e-child\" data-id=\"41d728c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d366200 e-con e-atomic-element e-flexbox-base e-default-div e-df258ab\" data-id=\"d366200\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"d366200\">\n    \t\t<div class=\"elementor-element elementor-element-d5a2ffd elementor-widget__width-initial elementor-widget elementor-widget-html\" data-id=\"d5a2ffd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t\r\n<style>\r\n\/* AASHTO MASH - Elementor Responsive Sections *\/\r\n.mash-info-sections {\r\n  --mash-navy: #193965;\r\n  --mash-blue: #2196C8;\r\n  --mash-pale: #EFF7FE;\r\n  --mash-text: #303B4B;\r\n\r\n  width: 100%;\r\n  max-width: 100%;\r\n  margin: 0;\r\n  padding: 24px 0;\r\n  box-sizing: border-box;\r\n  font-family: Arial, Helvetica, sans-serif;\r\n  color: var(--mash-text);\r\n  background: #fff;\r\n  overflow: hidden;\r\n}\r\n\r\n.mash-info-sections *,\r\n.mash-info-sections *::before,\r\n.mash-info-sections *::after {\r\n  box-sizing: border-box;\r\n}\r\n\r\n.mash-container {\r\n  width: 100%;\r\n  max-width: 1200px;\r\n  padding: 0 24px;\r\n  margin: 0 auto;\r\n}\r\n\r\n.mash-accent {\r\n  display: block;\r\n  width: 38px;\r\n  height: 4px;\r\n  background: var(--mash-gold);\r\n  margin-bottom: 12px;\r\n}\r\n\r\n.mash-info-sections h2 {\r\n  color: var(--mash-navy);\r\n  font-size: clamp(23px, 2.5vw, 32px);\r\n  line-height: 1.2;\r\n  font-weight: 800;\r\n  letter-spacing: -0.5px;\r\n  margin: 0 0 14px;\r\n  text-align: left;\r\n}\r\n\r\n.mash-info-sections p {\r\n  font-size: 15px;\r\n  line-height: 1.65;\r\n  margin: 0;\r\n}\r\n\r\n\/* SECTION 1: CHANGES FROM NCHRP 350 *\/\r\n.mash-change-panel {\r\n  display: grid;\r\n  grid-template-columns: 1.2fr repeat(3, minmax(0, 1fr));\r\n  align-items: center;\r\n  gap: 0;\r\n  background: linear-gradient(120deg, #F0F8FE 0%, #EAF5FD 100%);\r\n  border-radius: 22px;\r\n  padding: 32px;\r\n  margin-bottom: 42px;\r\n}\r\n\r\n.mash-change-intro {\r\n  padding-right: 28px;\r\n}\r\n\r\n.mash-change-intro p {\r\n  max-width: 330px;\r\n}\r\n\r\n.mash-stat {\r\n  min-width: 0;\r\n  height: 100%;\r\n  padding: 0 18px;\r\n  border-left: 1px solid #D3E5F4;\r\n  display: flex;\r\n  flex-direction: column;\r\n  align-items: center;\r\n  text-align: center;\r\n}\r\n\r\n.mash-stat-icon {\r\n  width: 70px;\r\n  height: 70px;\r\n  flex-shrink: 0;\r\n  display: flex;\r\n  align-items: center;\r\n  justify-content: center;\r\n  background: #fff;\r\n  border-radius: 50%;\r\n  margin: 0 0 14px;\r\n  color: #1976D2;\r\n}\r\n\r\n.mash-stat-icon svg {\r\n  width: 38px;\r\n  height: 38px;\r\n  stroke: currentColor;\r\n  fill: none;\r\n  stroke-width: 1.8;\r\n  stroke-linecap: round;\r\n  stroke-linejoin: round;\r\n}\r\n\r\n.mash-stat h3 {\r\n  color: var(--mash-navy);\r\n  font-size: 19px;\r\n  line-height: 1.35;\r\n  font-weight: 800;\r\n  margin: 0 0 9px;\r\n}\r\n\r\n.mash-stat p {\r\n  font-size: 13px;\r\n  line-height: 1.55;\r\n  max-width: 190px;\r\n}\r\n\r\n\/* SECTION 2: TEST LEVELS *\/\r\n.mash-test-section {\r\n  margin-bottom: 18px;\r\n}\r\n\r\n.mash-test-section > h2 {\r\n  max-width: 780px;\r\n  margin: 0 auto 20px;\r\n  text-align: center;\r\n}\r\n\r\n.mash-table-wrap {\r\n  width: 100%;\r\n  overflow-x: auto;\r\n  border: 1px solid #D7E7F4;\r\n  border-radius: 8px;\r\n  -webkit-overflow-scrolling: touch;\r\n}\r\n\r\n.mash-table {\r\n  width: 100%;\r\n  border-collapse: collapse;\r\n  table-layout: fixed;\r\n  margin: 0;\r\n  background: #fff;\r\n  font-size: 14px;\r\n  line-height: 1.5;\r\n}\r\n\r\n.mash-table th {\r\n  color: #fff;\r\n  background: #07335D;\r\n  font-size: 14px;\r\n  font-weight: 700;\r\n  text-align: left;\r\n  padding: 16px 18px;\r\n  border-right: 1px solid rgba(255,255,255,.24);\r\n  vertical-align: middle;\r\n}\r\n\r\n.mash-table th:last-child {\r\n  border-right: 0;\r\n}\r\n\r\n.mash-table td {\r\n  padding: 16px 18px;\r\n  vertical-align: middle;\r\n  border-right: 1px solid #DCEAF5;\r\n  border-bottom: 1px solid #DCEAF5;\r\n  overflow-wrap: anywhere;\r\n}\r\n\r\n.mash-table td:last-child {\r\n  border-right: 0;\r\n}\r\n\r\n.mash-table tbody tr:nth-child(odd) {\r\n  background: #EDF6FD;\r\n}\r\n\r\n.mash-table tbody tr:nth-child(even) {\r\n  background: #F8FBFE;\r\n}\r\n\r\n.mash-table tbody tr:last-child td {\r\n  border-bottom: 0;\r\n}\r\n\r\n.mash-table .mash-level {\r\n  color: var(--mash-navy);\r\n  font-weight: 800;\r\n  white-space: nowrap;\r\n}\r\n\r\n.mash-table th:nth-child(1) { width: 16%; }\r\n.mash-table th:nth-child(2) { width: 29%; }\r\n.mash-table th:nth-child(3) { width: 27%; }\r\n.mash-table th:nth-child(4) { width: 28%; }\r\n\r\n\/* INFORMATION NOTE *\/\r\n.mash-note {\r\n  display: flex;\r\n  align-items: flex-start;\r\n  gap: 15px;\r\n  padding: 19px 22px;\r\n  margin-top: 16px;\r\n  background: #EAF5FD;\r\n  border-radius: 18px;\r\n}\r\n\r\n.mash-note-icon {\r\n  flex: 0 0 38px;\r\n  width: 38px;\r\n  height: 38px;\r\n  display: flex;\r\n  align-items: center;\r\n  justify-content: center;\r\n  background: #69A3D9;\r\n  color: #fff;\r\n  border-radius: 50%;\r\n  font-size: 25px;\r\n  line-height: 1;\r\n  font-family: Georgia, serif;\r\n  font-weight: bold;\r\n}\r\n\r\n.mash-note p {\r\n  font-size: 13px;\r\n  line-height: 1.6;\r\n  padding-top: 1px;\r\n}\r\n\r\n\/* TABLET *\/\r\n@media (max-width: 900px) {\r\n  .mash-container {\r\n    padding: 0 20px;\r\n  }\r\n\r\n  .mash-change-panel {\r\n    grid-template-columns: repeat(3, minmax(0, 1fr));\r\n    padding: 26px;\r\n    row-gap: 26px;\r\n  }\r\n\r\n  .mash-change-intro {\r\n    grid-column: 1 \/ -1;\r\n    padding: 0 0 20px;\r\n  }\r\n\r\n  .mash-change-intro p {\r\n    max-width: 650px;\r\n  }\r\n\r\n  .mash-stat:first-of-type {\r\n    border-left: 0;\r\n  }\r\n\r\n  .mash-stat {\r\n    padding: 0 12px;\r\n  }\r\n\r\n  .mash-table {\r\n    min-width: 680px;\r\n  }\r\n}\r\n\r\n\/* MOBILE *\/\r\n@media (max-width: 600px) {\r\n  .mash-info-sections {\r\n    padding: 16px 0;\r\n  }\r\n\r\n  .mash-container {\r\n    padding: 0 14px;\r\n  }\r\n\r\n  .mash-change-panel {\r\n    grid-template-columns: 1fr;\r\n    padding: 22px 18px;\r\n    border-radius: 16px;\r\n    gap: 0;\r\n    margin-bottom: 32px;\r\n  }\r\n\r\n  .mash-change-intro {\r\n    grid-column: auto;\r\n    padding: 0 0 20px;\r\n  }\r\n\r\n  .mash-info-sections h2 {\r\n    font-size: clamp(23px, 6vw, 28px);\r\n    line-height: 1.25;\r\n  }\r\n\r\n  .mash-info-sections p {\r\n    font-size: 14px;\r\n    line-height: 1.65;\r\n  }\r\n\r\n  .mash-stat,\r\n  .mash-stat:first-of-type {\r\n    display: grid;\r\n    grid-template-columns: 62px minmax(0, 1fr);\r\n    grid-template-rows: auto auto;\r\n    column-gap: 14px;\r\n    align-items: center;\r\n    text-align: left;\r\n    border-left: 0;\r\n    border-top: 1px solid #D3E5F4;\r\n    padding: 18px 0;\r\n  }\r\n\r\n  .mash-stat-icon {\r\n    width: 58px;\r\n    height: 58px;\r\n    grid-column: 1;\r\n    grid-row: 1 \/ 3;\r\n    margin: 0;\r\n  }\r\n\r\n  .mash-stat-icon svg {\r\n    width: 31px;\r\n    height: 31px;\r\n  }\r\n\r\n  .mash-stat h3 {\r\n    font-size: 17px;\r\n    margin: 0 0 4px;\r\n  }\r\n\r\n  .mash-stat p {\r\n    grid-column: 2;\r\n    max-width: none;\r\n    font-size: 13px;\r\n  }\r\n\r\n  .mash-test-section > h2 {\r\n    margin-bottom: 16px;\r\n    text-align: left;\r\n  }\r\n\r\n  .mash-table {\r\n    min-width: 650px;\r\n    font-size: 13px;\r\n  }\r\n\r\n  .mash-table th,\r\n  .mash-table td {\r\n    padding: 13px 12px;\r\n  }\r\n\r\n  .mash-note {\r\n    gap: 11px;\r\n    padding: 16px;\r\n    border-radius: 14px;\r\n  }\r\n\r\n  .mash-note-icon {\r\n    flex-basis: 32px;\r\n    width: 32px;\r\n    height: 32px;\r\n    font-size: 22px;\r\n  }\r\n\r\n  .mash-note p {\r\n    font-size: 12px;\r\n  }\r\n}\r\n<\/style>\r\n\r\n<div class=\"mash-info-sections\">\r\n  <div class=\"mash-container\">\r\n\r\n    <!-- SECTION 1: WHAT CHANGED -->\r\n    <section class=\"mash-change-panel\">\r\n\r\n      <div class=\"mash-change-intro\">\r\n        <span class=\"mash-accent\"><\/span>\r\n        <h2>What changed<br>from NCHRP 350<\/h2>\r\n\r\n        <p>\r\n          MASH updated the test vehicles, the number and conditions of the tests,\r\n          and the evaluation criteria, so that barriers are proven against the\r\n          vehicles on today's roads.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <!-- SMALL PASSENGER CAR -->\r\n      <div class=\"mash-stat\">\r\n        <div class=\"mash-stat-icon\">\r\n          <svg viewbox=\"0 0 48 48\" aria-hidden=\"true\">\r\n            <path d=\"M8 27l3-10a5 5 0 0 1 5-4h16a5 5 0 0 1 5 4l3 10\"\/>\r\n            <path d=\"M6 27h36v10H6z\"\/>\r\n            <path d=\"M12 37v4m24-4v4M10 27l3-6h22l3 6\"\/>\r\n            <circle cx=\"13\" cy=\"32\" r=\"2\"\/>\r\n            <circle cx=\"35\" cy=\"32\" r=\"2\"\/>\r\n          <\/svg>\r\n        <\/div>\r\n\r\n        <h3>820 kg \u2192<br>1,100 kg<\/h3>\r\n        <p>\r\n          The small passenger car test vehicle grew from 820 kg to 1,100 kg.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <!-- PICKUP TRUCK -->\r\n      <div class=\"mash-stat\">\r\n        <div class=\"mash-stat-icon\">\r\n          <svg viewbox=\"0 0 48 48\" aria-hidden=\"true\">\r\n            <path d=\"M4 18h25v17H4z\"\/>\r\n            <path d=\"M29 23h8l7 7v5H29z\"\/>\r\n            <path d=\"M33 23v7h11\"\/>\r\n            <circle cx=\"13\" cy=\"36\" r=\"4\"\/>\r\n            <circle cx=\"36\" cy=\"36\" r=\"4\"\/>\r\n            <path d=\"M9 18l4-7h12l4 7\"\/>\r\n          <\/svg>\r\n        <\/div>\r\n\r\n        <h3>2,000 kg \u2192<br>2,270 kg<\/h3>\r\n        <p>\r\n          The pickup test vehicle grew from 2,000 kg to 2,270 kg.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <!-- IMPACT ANGLE -->\r\n      <div class=\"mash-stat\">\r\n        <div class=\"mash-stat-icon\">\r\n          <svg viewbox=\"0 0 48 48\" aria-hidden=\"true\">\r\n            <path d=\"M8 39L39 8\"\/>\r\n            <path d=\"M8 39h33\"\/>\r\n            <path d=\"M13 34l5 5\"\/>\r\n            <path d=\"M22 25l4 4\"\/>\r\n            <path d=\"M30 17l4 4\"\/>\r\n            <path d=\"M8 34v5\"\/>\r\n            <path d=\"M35 39v-5\"\/>\r\n          <\/svg>\r\n        <\/div>\r\n\r\n        <h3>20\u00b0 \u2192<br>25\u00b0<\/h3>\r\n        <p>\r\n          The small car impact angle rose from 20 to 25 degrees.\r\n        <\/p>\r\n      <\/div>\r\n\r\n    <\/section>\r\n\r\n    <!-- SECTION 2: TEST LEVELS -->\r\n    <section class=\"mash-test-section\">\r\n\r\n      <span class=\"mash-accent\"><\/span>\r\n\r\n      <h2>\r\n        Test levels for longitudinal barriers (guardrail and median barrier)\r\n      <\/h2>\r\n\r\n      <div\r\n        class=\"mash-table-wrap\"\r\n        role=\"region\"\r\n        aria-label=\"MASH barrier test levels\"\r\n        tabindex=\"0\"\r\n      >\r\n        <table class=\"mash-table\">\r\n          <thead>\r\n            <tr>\r\n              <th scope=\"col\">Test level<\/th>\r\n              <th scope=\"col\">Test vehicles<\/th>\r\n              <th scope=\"col\">Impact speed and angle<\/th>\r\n              <th scope=\"col\">Typical use<\/th>\r\n            <\/tr>\r\n          <\/thead>\r\n\r\n          <tbody>\r\n            <tr>\r\n              <td class=\"mash-level\">TL-3<\/td>\r\n              <td>1,100 kg car and<br>\u0633\u0639\u0629 \u0627\u0644\u062a\u062d\u0645\u064a\u0644 2,270 \u0643\u062c\u0645<\/td>\r\n              <td>100 km\/h at 25 degrees<\/td>\r\n              <td>High-speed highways and expressways<\/td>\r\n            <\/tr>\r\n\r\n            <tr>\r\n              <td class=\"mash-level\">TL-4<\/td>\r\n              <td>\r\n                TL-3 vehicles plus a<br>\r\n                10,000 kg single-unit truck\r\n              <\/td>\r\n              <td>Truck at 90 km\/h and 15 degrees<\/td>\r\n              <td>Roads with heavier truck traffic<\/td>\r\n            <\/tr>\r\n\r\n            <tr>\r\n              <td class=\"mash-level\">TL-5<\/td>\r\n              <td>\r\n                TL-3 vehicles plus a<br>\r\n                36,000 kg tractor-van trailer\r\n              <\/td>\r\n              <td>Truck at 80 km\/h and 15 degrees<\/td>\r\n              <td>Bridges, interchanges, high-risk locations<\/td>\r\n            <\/tr>\r\n          <\/tbody>\r\n        <\/table>\r\n      <\/div>\r\n\r\n      <!-- INFORMATION NOTE -->\r\n      <div class=\"mash-note\">\r\n        <div class=\"mash-note-icon\" aria-hidden=\"true\">i<\/div>\r\n\r\n        <p>\r\n          MASH defines six test levels in total, from TL-1 for low-speed roads\r\n          up to TL-6 with a tank trailer. A system earns a test level only by\r\n          passing every crash test required for that level, judged on three things:\r\n          whether the barrier contains and redirects the vehicle, the forces on\r\n          the occupants, and how the vehicle behaves after the impact.\r\n        <\/p>\r\n      <\/div>\r\n\r\n    <\/section>\r\n\r\n  <\/div>\r\n<\/div>\r\n\t\t\t\t<\/div>\n\t\t\n<\/div>\n<div class=\"elementor-element elementor-element-1b6c765 e-flex e-con-boxed e-con e-parent\" data-id=\"1b6c765\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-8faee61 e-con-full e-flex e-con e-child\" data-id=\"8faee61\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-5f205af e-con-full e-flex e-con e-child\" data-id=\"5f205af\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-201a72d e-con-full e-flex e-con e-child\" data-id=\"201a72d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-43fe54b elementor-invisible elementor-widget elementor-widget-elementskit-heading\" data-id=\"43fe54b\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInLeft&quot;,&quot;_animation_delay&quot;:200}\" data-widget_type=\"elementskit-heading.default\">\n\t\t\t\t\t<div class=\"ekit-wid-con\" ><div class=\"ekit-heading elementskit-section-title-wraper text_left   ekit_heading_tablet-   ekit_heading_mobile-\"><h3 class=\"ekit-heading--title elementskit-section-title text_fill\">Evidence you can check<\/h3><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8b942a7 elementor-widget elementor-widget-text-editor\" data-id=\"8b942a7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>In the United States, the Federal Highway Administration issues eligibility letters for crash-tested systems, for example for a 31-inch W-beam guardrail tested to MASH TL-3. Under the joint AASHTO and FHWA implementation agreement, new W-beam barriers on federal-aid highway projects had to be MASH-tested from the end of 2017, and other longitudinal barriers, transitions and bridge rails from the end of 2019. MASH is not a one-off label: it is the working standard for a large and growing body of tested hardware.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-0f3028b e-con-full e-flex e-con e-child\" data-id=\"0f3028b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" class=\"e-image-base e-default-img\" data-interaction-id=\"4557d59\" id=\"498\" src=\"https:\/\/sallanmetals.com\/wp-content\/uploads\/2026\/10\/serv_02.jpeg\" width=\"1600\" height=\"1044\" srcset=\"https:\/\/sallanmetals.com\/wp-content\/uploads\/2026\/10\/serv_02.jpeg 1600w, https:\/\/sallanmetals.com\/wp-content\/uploads\/2026\/10\/serv_02-300x196.jpeg 300w, https:\/\/sallanmetals.com\/wp-content\/uploads\/2026\/10\/serv_02-1024x668.jpeg 1024w, https:\/\/sallanmetals.com\/wp-content\/uploads\/2026\/10\/serv_02-768x501.jpeg 768w, https:\/\/sallanmetals.com\/wp-content\/uploads\/2026\/10\/serv_02-1536x1002.jpeg 1536w, https:\/\/sallanmetals.com\/wp-content\/uploads\/2026\/10\/serv_02-18x12.jpeg 18w\" alt=\"\"\/>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>AASHTO MASH AASHTO MASH safety barrier systems MASH is the American crash-test standard for roadside safety hardware, and US highway agencies require it for new permanent barrier installations. The Manual for Assessing Safety Hardware (MASH) is published by AASHTO, the American Association of State Highway and Transportation Officials. It sets out how permanent and temporary [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"postBodyCss":"","postBodyMargin":[],"postBodyPadding":[],"postBodyBackground":{"backgroundType":"classic","gradient":""},"footnotes":""},"class_list":["post-481","page","type-page","status-publish","hentry"],"_hostinger_reach_plugin_has_subscription_block":false,"_hostinger_reach_plugin_is_elementor":false,"_links":{"self":[{"href":"https:\/\/sallanmetals.com\/ar\/wp-json\/wp\/v2\/pages\/481","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sallanmetals.com\/ar\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sallanmetals.com\/ar\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sallanmetals.com\/ar\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sallanmetals.com\/ar\/wp-json\/wp\/v2\/comments?post=481"}],"version-history":[{"count":37,"href":"https:\/\/sallanmetals.com\/ar\/wp-json\/wp\/v2\/pages\/481\/revisions"}],"predecessor-version":[{"id":918,"href":"https:\/\/sallanmetals.com\/ar\/wp-json\/wp\/v2\/pages\/481\/revisions\/918"}],"wp:attachment":[{"href":"https:\/\/sallanmetals.com\/ar\/wp-json\/wp\/v2\/media?parent=481"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}