Other tools NBS offers a range of tools for specification and collaboration National BIM Library The most trusted BIM Library in the UK, certified to the internationally-recognised NBS BIM Object Standard Uniclass 2015 A dynamic and unified classification system for the construction industry covering all sectors Construction Information Service (CIS) A comprehensive online collection of construction related standards, regulations, technical advice and articles Plug-ins NBS provides a range of tools to help connect your CAD model to your specification model
Platform Resources Support Events About TheNBS.com Manufacturers Uniclass 2015 Get in touch

Platform

NBS Chorus Features and pricing Book a demonstration Sign in to NBS Chorus Other tools National BIM Library Uniclass 2015 Construction Information Service (CIS) Plug-ins

Resources

Knowledge Sample Specification Case studies Authors

Support

Training Downloads and updates

About

About NBS Newsroom

Platform

NBS Chorus Features and pricing Book a demonstration Sign in to NBS Chorus Other tools National BIM Library Uniclass 2015 Construction Information Service (CIS) Plug-ins

Resources

Knowledge Sample Specification Case studies Authors

Support

Training Downloads and updates

About

About NBS Newsroom
Download from CIS *
* A valid subscription to The Construction Information Service is required to download this document.

Click here to find out how to access this document

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. Changes made to core document. Type of change: Change to policy, major revision, new document development. New document: MCHW refresh-linked document.

Publisher Information

National Highways

National Highways is a government company, with responsibility for operating, maintaining and improving motorways and major A roads in England. It works with the Department for Transport and was previously known as Highways England and Highways Agency.

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

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