All products and services that are normally used for the construction of highways and ancillary structures on the UK Strategic Trunk Road Network.

CD 20X Surface Course Materials for Construction

Including National Annexes for England, Scotland, Wales and Northern Ireland

The Design Manual for Roads and Bridges is the advisory documentation used by the Highways Agency for new highway construction works and maintenance on the UK Strategic Trunk Road Network.

This document provides requirements regarding the way the pavement surfacing for both flexible and rigid pavements on the UK strategic road network will be managed. This document sets and describes physical properties for aggregates in the runnnig surface of the carriageway.