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DMRB: Road Layout CD 131 Design of temporary retroreflecting road studs. Version 1.0.0

Publication Year

2025

Document Status

Current

Abstract

Details design requirements for temporary retroreflecting road studs, covering implementation, types, dimensions, night time visibility, daytime visibility, test methods and road trials, and information to be supplied for installation.

Document History

Road layout. Design. Latest release notes: Version number: 1.0.0. Date of publication of relevant change: September 2025. New document: MCHW refresh-linked document.

Publisher Information

National Highways

National Highways is an executive non-departmental public body, sponsored by the Department for Transport. It has responsibility for operating, maintaining and improving motorways and major A roads in England. Formerly known as Highways England, between 2015-2021 and Highways Agency, between 1994-2015.

National Traffic Operations Centre
3 Ridgeway
Quinton Business Park
Birmingham
NHW
UK

Website: https://www.gov.uk/government/organisations/national-highways
Email: info@nationalhighways.co.uk
Tel: 0300 123 5000