Standards for the preparation, design and construction of motorways and trunk roads.
We manage the Highway Standards and associated guidance to be used in Wales.
We identify the administrative and technical requirements for the planning, preparation, design and construction of highway works. We do this through the publication of standards and specifications to be used on the motorway and trunk road network in Wales.
The Highway Standards which apply to the Welsh motorway and trunk road network are contained in the Design Manual for Roads and Bridges (DMRB) and the Manual of Contract Documents for Highways Works (MCHW).
Both the DMRB and the MCHW are national standards applicable throughout the UK, produced by the Highways England in conjunction with the governments of Wales, Scotland and Northern Ireland.
We publish associated guidance documents which support the UK Highway Standards defined in both the DMRB and the MCHW. These associated guidance documents are divided into:
- procedure and advice guidance (PAG)
- street works guidance
Procedure and advice guidance
Technical requirements for the planning, preparation, design and construction of highway works which is not contained in either Highway Standards (DMRB/MCHW).
Guidance on our procedures which relate to the planning, preparation, design and construction of highway works on the Welsh motorway and trunk road network.