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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

Documents by this publisher

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Series details Title Year Status
DMRB: Pavement CD 225 Version 1.1.0 Design for new pavement foundations (formerly IAN 73/06 revision 1 (2009), HD 25/94). Version 1.1.0 2025 Current
DMRB: Pavement CD 226 Design for new pavement construction (formerly HD 26/06). Version 0.1.0 (Withdrawn) 2021 Withdrawn
DMRB: Pavement CD 226 Version 0.2.0 Design for new pavement construction (formerly HD 26/06). Version 0.2.0 2025 Current
DMRB: Pavement CD 227 Version 0.1.0 Design for pavement maintenance (formerly HD 30/08, HD 32/16). Version 0.1.0 2025 Current
DMRB: Pavement CD 236 Version 4.1.0 Surface course materials for construction (formerly CD 236 (rev. 3 inc. HD 36/06 and IAN 156/16), HD 37/99, HD 38/16, IAN 157/11, TA 81/16). Version 4.1.0 (Withdrawn) 2022 Withdrawn
DMRB: Pavement CD 236 Version 4.2.0 Surface course materials for construction (formerly CD 236 (rev. 3 inc. HD 36/06 and IAN 156/16), HD 37/99, HD 38/16, IAN 157/11, TA 81/16). Version 4.2.0 2025 Current
DMRB: Pavement CD 239 Version 2.0.0 Footway and cycleway track pavement design and access steps (formerly HD 39/16). Version 2.0.0 2025 Current
DMRB: Pavement CD 241 Version 1.0.0 Design for pavement maintenance of footways and cycle tracks. Version 1.0.0 2025 Current
DMRB: Pavement CS 230 Version 0.1.0 Pavement maintenance assessment procedure (formerly HD 29/08, HD 30/08). Version 0.1.0 2022 Current
DMRB: Road Layout CD 116 Version 2.1.0 Geometric design of roundabouts (formerly TD 16/07, TD 50/04, TD 51/17, TD 54/07, TA 23/81, TA 78/97, TA 86/03, TD 70/08). Version 2.1.0 2023 Current
DMRB: Road Layout CD 120 Design of permanent traffic signs, road markings and road studs. Version 1.0.0 2025 Current
DMRB: Road Layout CD 122 Geometric design of grade separated junctions (formerly TD 22/06, TD 39/94, TD 40/94). Version 1.1.0 2021 Withdrawn
DMRB: Road Layout CD 122 Geometric design of grade separated junctions (formerly TD 22/06, TD 39/94, TD 40/94). Version 1.1.1 2022 Current
DMRB: Road Layout CD 123 Geometric design of at-grade priority and signal-controlled junctions (formerly TD 41/95, TD 42/95, TD 40/94, and those parts of TD 50/04 and TD 70/08 relating to priority and signal-controlled junctions). Version 2.1.0 2021 Current
DMRB: Road Layout CD 130 Design of temporary traffic management at road works and temporary road layouts (formerly MCHW Series 1200). Version 1.0.0 2025 Current
DMRB: Road Layout CD 131 Design of temporary retroreflecting road studs. Version 1.0.0 2025 Current
DMRB: Road Layout CD 132 Design of flat traffic delineators (formerly None). Version 1.0.0 2025 Current
DMRB: Road Layout CD 133 Design of temporary automatic speed cameras at road works (TASCAR) (formerly MCHW 117.28-117.47 & IAN 113/08). Version 1.0.0 2025 Current
DMRB: Road Layout CD 146 Version 2.0.0 Positioning of signalling and advance direction signs (formerly TD 46/05, TD 18/85) Version 2.0.0 2023 Current
DMRB: Road Layout CD 169 Version 1.1.0 Design of lay-bys, maintenance hardstandings, rest areas, service areas and observation platforms (formerly TD 69/07, TA 66/95) Version 1.1.0 2022 Current

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