Document Status
Current
Supplement
Civil & Structural Supplement
Series
DMRB: Road Layout
Abstract
Details the requirements for highway cross-sections and headroom for all-purpose and motorway trunk road structures.
History
Road Layout. Design. Supersedes TD 27/05 Road Geometry. Links. Cross-sections and headrooms (HA, 2005), TD 70/08 Road geometry. Links. Design of wide single 2+1 roads (HA, 2008), TA 57/87 Road Geometry. Highway Features. Roadside features (HA, 1987), TA 85/01 Road Geometry. Links. Guidance on minor improvements to existing roads (includes amendment No.1 dated January 2002, Correction May 2002 and Correction August 2002) (HA, 2001), TA 87/04 Road Geometry. Highway Features. Traffic calming on trunk roads a practical guide (HA, 2004), and TA 98/08 Road Geometry. Highway Features. The layout of toll plazas (HA, 2008). Previous versions: CD 127 Version 0 issued November 2019. CD 127 Version 1 issued March 2020. CD 127 Version 1.0.1 issued July 2021, changes made to core document, Northern Ireland NAA (incremental change to notes and editorial updates).
Subjects
- Civil engineering, infrastructure and public utilities
- Transport facilities
- Road layout
- Roads
Publisher History
Highways England (formerly Highways Agency) was transformed into National Highways in 2021. It was responsible for the operation, maintenance and improvement of England's motorways and major A roads. It was an executive non-departmental public body, sponsored by the Department for Transport.