NHAI flags improper crash barriers, tightens highway safety standards NHAI has also specified E350-grade steel conforming to IS 2062 (Part 1):2025. Posts, spacers and fasteners must be hot-dip galvanised Published on: Sep 28, 2026, 18:43:10 IST By Soumya Chatterjee, New Delhi Prefer HTon Google Share via Copy link