October 4, 2026
A practical guide to reassessing highway guardrail systems after pavement resurfacing, including NZTA M23 height tolerance, posts, foundations, roadbed and cleaning checks.
Guardrail crash-test standards explained: EN 1317 containment levels, AASHTO M180 / MASH TL ratings, China JTG B05-01, working width and ASI. Written for engineers and specifiers who must justify a barrier choice against a project standard.