Published standards and specifications are routinely reviewed and updated to reflect best practice. We welcome feedback on our standards from suppliers and other stakeholders. If you would like to give feedback on or have any queries relating to one of our Design Manual for Roads and Bridges (DMRB) or Manual of Contract Documents for Highway Works (MCHW) standards, please use the feedback form.
Where applicable, the feedback you provide will be forwarded to the technical author responsible for the document, and a response sent to you shortly.
For any issues using the form, please email standards_enquiries@nationalhighways.co.uk