Traffic assessment (formerly CD 224 (rev. 0 inc. HD 24/06)). Version 0.1.0

DMRB: Pavement CD 224 Version 0.1.0

National Highways, 2025
Traffic assessment (formerly CD 224 (rev. 0 inc. HD 24/06)). Version 0.1.0 Download document

Document Status

Current

Supplement

Civil & Structural Supplement

Series

DMRB: Pavement

Abstract

Details calculation methods for traffic loading used in road pavement design and covers: commercial vehicle flows in new and existing road schemes.

History

Pavement. Design. Supersedes CD 224 Traffic assessment (formerly HD 24/06) (HE, 2020). Revision 0 - March 2020. Replaces HD 24/06. This full document has been re-written to make it compliant with Highways England drafting rules and has also been updated and simplified. Version 0.1.0. Date of publication - September 2025. Incremental changes to requirements, based on 3 years experience of using CD 224 and cyclic review.

Subjects

  • Roads
  • Civil engineering, infrastructure and public utilities
  • Transport facilities

Publisher History

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.

Information

NBS

NBS has produced specification systems and information products for construction industry professionals for more than 40 years. The National Building Specification is the recognised UK national standard and is used by over 5,000 organisations. NBS is part of RIBA Enterprises Ltd.

Accuris

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