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DMRB: Highway Structures and Bridges CD 377 Version 5.0.1 Requirements for road restraint systems. Version 5.0.1
Publication Year
2026
Document Status
Current
Abstract
Gives requirements for permanent and temporary safety barriers, including: vehicle parapets, terminals, transitions, crash cushions, pedestrian parapets, pedestrian guardrails and pedestrian restraint and protection, vehicle arrester beds, anti-glare systems and cattle grids. Covers containment levels, impact severity level, working width classes and vehicle intrusion classes, length of need, set-back, passively safe road furniture, provision at structural supports, vehicle parapets, gantries, nosing areas and junctions, and central reserves.
Document History
Highway Structures and Bridges. Design. Supersedes CD 377 Requirements for road restraint systems (formerly TD 19/06). Revision 4 (HE, 2021). Version 0 dated Mar 2020 - replaces TD 19/06. Version 1 dated Jun 2020 - Scotland National Application Annex requirements created. Version 2 dated Jul 2020 - Wales National Application Annex requirements created. Version 3 dated Dec 2020 - updates Scotland National Application Annex. Version 4 dated Jan 2021 - updates Northern Ireland National Application Annex. Version 5.0.0 dated September 2025. Version 5.0.1 dated February 2026.
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.
