This double triangular carriageway cover is suitable for fast moving heavy traffic, main roads and carriageways. Specification Fast Moving Heavy Traffic, Main Roads and Carriageways Manufactured to BS:EN124 Class D400 40 Tonne Safe Test Load Highways agency HA104/09 compliant Double Triangular three-point suspension non-rock Underside lids loosely bolted together Closed keyways BSI Kitemark or other EN124 accreditation